Kalliopi Bazioti

• Ravuri, SyamSai; Wrobel, Pawel S.; Gorantla, Sandeep; Bazioti, Kalliopi; Sunding, Martin Fleissner & Lis, Krzysztof [Vis alle 11 forfattere av denne artikkelen] (2024). High yield and wide lateral size growth of α-Mo<inf>2</inf>C: exploring the boundaries of CVD growth of bare MXene analogues. Nanotechnology. ISSN 0957-4484. 35(15). doi: 10.1088/1361-6528/ad1c97.
• Balcerzak, Daria; Szpunar, Iga; Strandbakke, Ragnar; Saeed, Sarmad Waheed; Bazioti, Kalliopi & Mielewczyk-Gryń, Aleksandra [Vis alle 12 forfattere av denne artikkelen] (2023). Oxide nanoparticle exsolution in Lu-doped (Ba,La)CoO3. CrysteEngComm. ISSN 1466-8033. 25(30), s. 4306–4316. doi: 10.1039/d3ce00422h.
• Schifano, Ramon; Wierzbicka, A.; Dluzewski, P.; Domagala, J.Z.; Wozniak, W. & Kurowska, B. [Vis alle 8 forfattere av denne artikkelen] (2022). The restricted random dislocation distribution model to describe ensembles of dislocations with a screw component in ZnO layers with a mosaic structure. Journal of Applied Physics. ISSN 0021-8979. 132(5), s. 1–11. doi: 10.1063/5.0086295. Fulltekst i vitenarkiv Vis sammendrag

  By applying the restricted random dislocation distribution model, solved using a discrete Hankel transform approach, it is shown that the shapes and characteristics of the ω-scans of the ZnO 00.2 reflection are mainly determined by the strain field introduced by dislocations with a screw component. On the other hand, no clear evidence of mosaicity or interfacial region contributions is found despite the layers exhibiting a c axis oriented residual columnar structure and a highly defective interface being present. The applied model not only permits a more precise estimation of the densities of dislocations, which present a screw component with respect to methods based on the analysis of the 00.2 peak ω-scan FWHM, but also gives an indication of their distribution characteristics with the extracted values, as well as their homogeneous/quasi-regular spacing, being confirmed by cross-sectional transmission electron microscopy observations.

• Soltani, Nayereh; Rahman, Jamil Ur; Almeida Carvalho, Patricia; Bazioti, Kalliopi & Finstad, Terje Gunnar (2022). From quaternary to senary high entropy antimonide nanoparticles by a facile and scalable thermal treatment method. Materials research bulletin. ISSN 0025-5408. 153. doi: 10.1016/j.materresbull.2022.111873. Fulltekst i vitenarkiv Vis sammendrag

  Transition metal antimonides form a class of intermetallic compounds, which has drawn considerable attention due to their potential applications in various fields. However, the formation of nanostructures containing multiple transition metal elements has been a challenge. Here, a new class of multicomponent antimonide nanoparticles with chemical composition ranging from quaternary to senary were synthesized via a simple, reproducible, and scalable thermal treatment method. This method allows uniform elemental distributions in a single nanoparticle, demonstrating the ability to obtain medium- and high-entropy antimonide nanostructures. The mechanism of formation was proposed and the characteristics of obtained nanoparticles were investigated by X-ray diffraction, field emission scanning electron microscopy, and high-resolution transmission electron microscopy. Under the achieved optimal synthesis conditions, the formation of a single-phase with a hexagonal structure (P63/mmc) was observed for the quaternary and quinary samples, whereas in the case of the senary samples, a trace of minor impurity can be observed.

• Bazioti, Kalliopi; Løvvik, Ole Martin; Poulia, Anthoula; Almeida Carvalho, Patricia; S. Azar, Amin & Mikheenko, Pavlo [Vis alle 8 forfattere av denne artikkelen] (2022). Probing the structural evolution and its impact on magnetic properties of FeCoNi(AlMn)x high-entropy alloy at the nanoscale. Journal of Alloys and Compounds. ISSN 0925-8388. 910, s. 1–12. doi: 10.1016/j.jallcom.2022.164724. Fulltekst i vitenarkiv Vis sammendrag

  We report the first nanoscale investigation of FeCoNi(AlMn)x high-entropy alloys (HEAs) processed by laser metal deposition. The structural evolution of the alloy upon chemical composition variation (0.2 ≤ x ≤ 1.5) was investigated by combining imaging and spectroscopies in (scanning) transmission electron microscopy (S)TEM with density functional theory (DFT). A gradual change from a face-centered cubic (FCC) towards an ordered full-Heusler (L21) phase by increasing the Al and Mn contents was observed. Direct imaging and atomic-scale calculations revealed a nanoscale interplay between B2 and L21 ordered structures for x = 1.5, wherein the latter, Al and Mn occupy two different Wyckoff sites. By decreasing x, the FCC phase dominates exhibiting intense phase separation tendency, ordering phenomena, and nano-precipitation. Although not chemically discriminated, plasmon-peak splitting in low-loss electron energy loss spectra revealed the presence of two valence electron densities within the FCC phase. Lorentz TEM showed that the ordered nano-precipitates and nano-sized grains with a structure based on a tripled FCC unit cell are pinning-sites for magnetic domain walls and dislocations. All alloy compositions exhibited soft-magnetic behavior with coercivity (Hc) values< 1000 A/m. The FeCoNi(AlMn)1.5 alloy with L21/B2 nanostructure showed the highest magnetization (Ms) with relatively low Hc, attributed to the large magnetic moment of Mn and the synergistic effect of Mn-Al according to DFT, whilst ordering does not impose a negative effect. Phase separation trends within the FCC phase seem to decrease the Ms however, the overall impact on the magnetic behavior is not intense, opening up for new avenues for tuning FeCoNiAlMn properties through chemically-designed phase decomposition regimes.

• Azarov, Alexander; Bazioti, Kalliopi; Venkatachalapathy, Vishnukanthan; Ponniah, Vajeeston; Monakhov, Eduard & Kuznetsov, Andrej (2022). Disorder-Induced Ordering in Gallium Oxide Polymorphs. Physical Review Letters. ISSN 0031-9007. 128(1). doi: 10.1103/PhysRevLett.128.015704. Fulltekst i vitenarkiv
• Vasileiadis, Isaak G.; Belabbas, Imad; Bazioti, Kalliopi; Smalc-Koziorοwska, Julita; Komninou, Philomela & Dimitrakopulos, George P. (2021). Stacking Fault Manifolds and Structural Configurations of Partial Dislocations in InGaN Epilayers. Physica status solidi (b). ISSN 0370-1972. 258. doi: 10.1002/pssb.202100190.
• Larsen, Aleksander Amble; Poulia, Anthoula; S. Azar, Amin; Bazioti, Kalliopi; Almeida Carvalho, Patricia & Gunnæs, Anette Eleonora [Vis alle 9 forfattere av denne artikkelen] (2021). Identifying Magnetic Phases in Additively Manufactured High-Entropy Alloy FeCoNiAlxMnx, 2021 IEEE 10th International Conference on “Nanomaterials: Applications & Properties” (NAP – 2021). IEEE (Institute of Electrical and Electronics Engineers). ISSN 978-1-6654-3907-7. s. NMM03-1–NMM03-4. doi: 10.1109/NAP51885.2021.9568591. Fulltekst i vitenarkiv Vis sammendrag

  High-Entropy Alloys are advanced technological materials composed of several (typically five) elements in nearly equal atomic concentration. By forming these alloys, previously unknown phase fields of multidimensional phase diagrams are explored. The large number of possible substitutions of constituent elements on crystal lattice sites justifies the dominant contribution of mixing entropy over enthalpy to the free energy reduction. This leads to the formation of phases, which otherwise could not be formed in alloys with fewer main alloying elements. Here we explore magnetic and compositional properties of a High-Entropy Alloy, namely FeCoNiAl x Mn x (0.05 ≤ x ≤ 3.08), composed of magnetic (Fe, Co, Ni) and non-magnetic elements (Al, Mn). By magnetic force microscopy of a selected area, it is observed that for intermediate to low Al and Mn contents, the alloy splits in two major crystallographic phases with different magnetic properties. Elemental maps of the same area were recorded with energy dispersive spectroscopy and scanning electron microscopy. Counterintuitively, it was found that the phase rich in non-magnetic Al has stronger magnetism than the phase rich in Fe. This work showcases possible applications of the here presented HEAs as soft magnetic materials in functional magnetic elements.

• Poulia, Anthoula; S. Azar, Amin; Schrade, M.; Graff, J.S.; Bazioti, Kalliopi & Gunnæs, Anette Eleonora [Vis alle 8 forfattere av denne artikkelen] (2021). Process–Structure–Property Relationship in FeCoNiAlxMnx Complex Concentrated Alloys Processed by Additive Manufacturing. Journal of materials engineering and performance (Print). ISSN 1059-9495. 30, s. 6961–6971. doi: 10.1007/s11665-021-06082-8. Fulltekst i vitenarkiv Vis sammendrag

  Fourteen alloys of the FeCoNiAlxMnx system were processed by laser metal deposition (LMD). The feedstock was a weighted and proportional blend of the containing elemental powders, targeting the nominal alloy compositions. Prior to processing, the composition and particle characteristics of the feedstock were assessed. The microstructural features and crystal structures of all LMD processed materials were characterized with scanning electron microscopy/energy dispersive spectroscopy and x-ray diffraction, in both as-received and heat-treated conditions. Selected samples were investigated via scanning transmission electron microscopy and electron backscattered diffraction for further structural understanding. Hardness tests, under various indentation loads and dwelling times, were performed to assess the mechanical properties of the processed samples. The results showed a rise in hardness as Al and Mn contents increase. The variation of hardness with composition follows a reverse sigma-type curve, reflecting the microstructural evolution and grain size variations in the alloys. Based on the hardness data, we suggest a trained and validated predictive model, which can be used in alloy design for future developments.

• Kang, Xiaolan; Berberidou, Chrysanthi; Galeckas, Augustinas; Bazioti, Kalliopi; Sagstuen, Einar & Norby, Truls Eivind [Vis alle 8 forfattere av denne artikkelen] (2021). Visible Light Driven Photocatalytic Decolorization and Disinfection of Water Employing Reduced TiO2 Nanopowders. Catalysts. ISSN 2073-4344. 11(2). doi: 10.3390/catal11020228. Fulltekst i vitenarkiv
• Poulia, Anthoula; S. Azar, Amin; Svec, Peter; Bazioti, Kalliopi; Belle, Branson & Gunnæs, Anette Eleonora [Vis alle 8 forfattere av denne artikkelen] (2020). Nanoscale Magnetic Properties of Additively Manufactured FeCoNiAlxMnx High-Entropy Alloys, 2020 IEEE 10th International Conference on “Nanomaterials: Applications & Properties” (NAP – 2020). IEEE (Institute of Electrical and Electronics Engineers). ISSN 978-1-7281-8506-4. s. 01NMM02-1–01NMM02-5. doi: 10.1109/NAP51477.2020.9309571. Fulltekst i vitenarkiv Vis sammendrag

  Magnetic properties of High-Entropy Alloys based on the Fe-Co-Ni-Al-Mn system are reported. High-Entropy Alloys are cutting-edge technological materials containing five or more elements in relatively high concentrations (5–35 at.%) within one or several solid-state solutions. These solutions are stabilized at the nanometer scale due to the high contribution of the mixing entropy to the Gibbs free energy, which can overcome the enthalpic contribution. Two magnetic alloys are found in FeCoNiAlxMnx (1.6 at.%  x  7.8 at.%) samples processed by laser metal deposition. The magnetic techniques used to screen the materials were magneto-optical imaging and magnetic force microscopy. The former allows characterizing magnetic properties within the mm-μm scale, while the latter is efficient down to the nanometer scale. Magnetic screening confirms the importance of the nanostructure in defining magnetic properties of the alloys, and the trends in the magnetic behavior as a function of the alloy composition are revealed. The experimental results suggest that it is possible to form unique alloys, which may outperform conventional magnetic materials used in a variety of applications such as transformers, screening shields and wind power generators.

• Vasquez, Geraldo Cristian; Bathen, Marianne Etzelmüller; Galeckas, Augustinas; Bazioti, Kalliopi; Johansen, Klaus Magnus H & Maestre, D. [Vis alle 11 forfattere av denne artikkelen] (2020). Strain Modulation of Si Vacancy Emission from SiC Micro- and Nanoparticles. Nano Letters. ISSN 1530-6984. 20(12), s. 8689–8695. doi: 10.1021/acs.nanolett.0c03472. Fulltekst i vitenarkiv
• Smalc-Koziorοwska, Julita; Moneta, J.; Chatzopoulou, P.; Vasileiadis, I.G.; Bazioti, Kalliopi & Prytz, Øystein [Vis alle 9 forfattere av denne artikkelen] (2020). The heterogeneous nucleation of threading dislocations on partial dislocations in III-nitride epilayers. Scientific Reports. ISSN 2045-2322. 10. doi: 10.1038/s41598-020-74030-y. Fulltekst i vitenarkiv
• Øien-Ødegaard, Sigurd; Bazioti, Kalliopi; Redekop, Evgeniy; Prytz, Øystein; Lillerud, Karl Petter & Olsbye, Unni (2020). A toroidal Zr70 oxysulfate cluster and its diverse packing structures. Angewandte Chemie International Edition. ISSN 1433-7851. 59, s. 21397–21402. doi: 10.1002/anie.202010847. Fulltekst i vitenarkiv
• Gogova-Petrova, Daniela; Olsen, Vegard Skiftestad; Bazioti, Kalliopi; Lee, In-Hwan; Prytz, Øystein & Vines, Lasse [Vis alle 7 forfattere av denne artikkelen] (2020). High electron mobility single-crystalline ZnSnN2 on ZnO (0001) substrates. CrysteEngComm. ISSN 1466-8033. 22(38), s. 6268–6274. doi: 10.1039/d0ce00861c. Fulltekst i vitenarkiv
• Bazioti, Kalliopi; Olsen, Vegard Skiftestad; Kuznetsov, Andrej; Vines, Lasse & Prytz, Øystein (2020). Formation of N2 bubbles along grain boundaries in (ZnO)1−x(GaN)x: nanoscale STEM-EELS studies . Physical Chemistry, Chemical Physics - PCCP. ISSN 1463-9076. 22(7), s. 3779–3783. doi: 10.1039/c9cp06025a. Fulltekst i vitenarkiv
• Olsen, Vegard Skiftestad; Baldissera, Gustavo; Zimmermann, Christian; Granerød, Cecilie Skjold; Bazioti, Kalliopi & Galeckas, Augustinas [Vis alle 11 forfattere av denne artikkelen] (2019). Evidence of defect band mechanism responsible for band gap evolution in (ZnO)1−x(GaN)x alloys. Physical review B (PRB). ISSN 2469-9950. 100(16). doi: 10.1103/PhysRevB.100.165201. Fulltekst i vitenarkiv
• Bazioti, Kalliopi; Azarov, Alexander; Johansen, Klaus Magnus H; Svensson, Bengt Gunnar; Vines, Lasse & Kuznetsov, Andrej [Vis alle 7 forfattere av denne artikkelen] (2019). Role of Nitrogen in Defect Evolution in Zinc Oxide: STEM−EELS Nanoscale Investigations. The Journal of Physical Chemistry Letters. ISSN 1948-7185. 10(16), s. 4725–4730. doi: 10.1021/acs.jpclett.9b01472. Fulltekst i vitenarkiv
• Bondevik, Tarjei; Ness, Heine Håland; Bazioti, Kalliopi; Norby, Truls Eivind; Løvvik, Ole Martin & Koch, Christoph T. [Vis alle 7 forfattere av denne artikkelen] (2019). Investigation of the electrostatic potential of a grain boundary in Y-substituted BaZrO3 using inline electron holography. Physical Chemistry, Chemical Physics - PCCP. ISSN 1463-9076. 21(32), s. 17662–17672. doi: 10.1039/c9cp02676b. Fulltekst i vitenarkiv Vis sammendrag

  We apply inline electron holography to investigate the electrostatic potential across an individual BaZr0.9Y0.1O3 grain boundary. With holography, we measure a grain boundary potential of −1.3 V. Electron energy loss spectroscopy analyses indicate that barium vacancies at the grain boundary are the main contributors to the potential well in this sample. Furthermore, geometric phase analysis and density functional theory calculations suggest that reduced atomic density at the grain boundary also contributes to the experimentally measured potential well.

• Hjelmeland, Trude Bjørgås; Bazioti, Kalliopi; Gunnæs, Anette Eleonora; Volkov, Y & Mikheenko, Pavlo (2019). Effect of colossal magnetoresistance material La0.67Ca0.33MnO3 on superconducting properties of YBa2Cu3O7-δ thin films. Journal of Magnetism and Magnetic Materials. ISSN 0304-8853. 487. doi: 10.1016/j.jmmm.2019.165335. Fulltekst i vitenarkiv
• Olsen, Vegard Skiftestad; Bazioti, Kalliopi; Baldissera, Gustavo; Azarov, Alexander; Prytz, Øystein & Persson, Clas [Vis alle 9 forfattere av denne artikkelen] (2019). Effects of Substrate and Post-Deposition Annealing on Structural and Optical Properties of (ZnO)1-x(GaN)x Films. Physica status solidi (b). ISSN 0370-1972. 256(6). doi: 10.1002/pssb.201800529. Fulltekst i vitenarkiv
• Granerød, Cecilie Skjold; Aarseth, Bjørn Lupton; Nguyen, Phuong Dan; Bazioti, Kalliopi; Azarov, Alexander & Svensson, Bengt Gunnar [Vis alle 8 forfattere av denne artikkelen] (2019). Structural and optical properties of individual Zn2GeO4 particles embedded in ZnO. Nanotechnology. ISSN 0957-4484. 30(22), s. 1–6. doi: 10.1088/1361-6528/ab061c. Fulltekst i vitenarkiv
• Olsen, Vegard Skiftestad; Bazioti, Kalliopi; Azarov, Alexander; Svensson, Bengt Gunnar; Kuznetsov, Andrej & Prytz, Øystein [Vis alle 7 forfattere av denne artikkelen] (2018). Bandgap bowing in crystalline (ZnO)1-x(GaN)x thin films; influence of composition and structural properties. Semiconductor Science and Technology. ISSN 0268-1242. 34, s. 1–7. doi: 10.1088/1361-6641/aaee4a.

Sjå alle arbeida i Cristin

• Bazioti, Kalliopi (2024). In situ growth and operando (S)TEM investigation of 2D anodes for all-solid-state Li-ion batteries.
• Bazioti, Kalliopi; Gorantla, Sandeep; Ravuri, SyamSai; Wrobel, Pawel S.; Sunding, Martin Fleissner & Sartori, Sabrina [Vis alle 9 forfattere av denne artikkelen] (2023). In situ and operando transmission electron microscopy: real-time nanoscale insights into emerging materials for batteries.
• Bazioti, Kalliopi; Gorantla, Sandeep; Ravuri, SyamSai; Wrobel, Pawel S.; Sunding, Martin Fleissner & Sartori, Sabrina [Vis alle 9 forfattere av denne artikkelen] (2023). In situ and operando transmission electron microscopy investigations of MXene-based anodes for Li-ion all-solid-state batteries.
• Bazioti, Kalliopi (2023). Spectroscopic and in situ/operando investigations of energy materials at the nanoscale.
• Bazioti, Kalliopi; Gorantla, Sandeep; Sunding, Martin Fleissner; Sartori, Sabrina; Diplas, Spyridon & Bachmatiuk, Alicja [Vis alle 7 forfattere av denne artikkelen] (2023). In situ and Operando Transmission Electron Microscopy investigations of novel 2D-based anodes for Li-ion all-solid-state batteries .
• Azarov, Alexander; Bazioti, Kalliopi; Venkatachalapathy, Vishnukanthan; Vajeeston, Ponniah; Monakhov, Eduard & Kuznetsov, Andrej (2022). Disorder-induced ordering in Ga2O3 polymorphs.
• Azarov, Alexander; Bazioti, Kalliopi; Venkatachalapathy, Vishnukanthan; Vajeeston, Ponniah; Monakhov, Eduard & Kuznetsov, Andrej (2022). Ion-beam-induced phase transitions in gallium oxide: impact of the implantation temperature .
• Bazioti, Kalliopi; Gorantla, Sandeep; Sunding, Martin Fleissner; Sartori, Sabrina; Diplas, Spyridon & Bachmatiuk, Alicja [Vis alle 7 forfattere av denne artikkelen] (2022). In situ and Operando Transmission Electron Microscopy investigations of MXenes for Li-ion all-solid-state batteries.
• Bazioti, Kalliopi; Kneiβ, Max; Wenckstern, Holger von; Hage, Fredrik Sydow & Prytz, Øystein (2022). Band Gap Measurements by VEELS of novel κ-(Al0.2Ga0.8)2O3/ κ-(In0.25Ga0.75)2O3 superlattices .
• Bazioti, Kalliopi; Gorantla, Sandeep; Sunding, Martin Fleissner; Sartori, Sabrina; Diplas, Spyridon & Bachmatiuk, Alicja [Vis alle 7 forfattere av denne artikkelen] (2022). Novel 2D-based anodes for Li-ion all-solid-state batteries.
• Bazioti, Kalliopi (2021). Transmission Electron Microscopy studies on resolving Energy Materials properties: Semiconductors, Metal alloys, 2D-based anodes for Batteries.
• Bazioti, Kalliopi (2021). (S)TEM investigations of Energy Materials: Semiconductors, Metal Alloys and 2D-based anodes for Batteries.
• Poulia, Anthoula; S. Azar, Amin; Bazioti, Kalliopi; Gunnæs, Anette Eleonora; Mikheenko, Pavlo & Diplas, Spyridon (2021). Investigation of High Entropy Alloys via Magnetic Force Microscopy.
• Poulia, Anthoula; S. Azar, Amin; Bazioti, Kalliopi; Gunnæs, Anette Eleonora; Mikheenko, Pavlo & Diplas, Spyridon (2021). Additively manufactured FeCoNi(AlMn)x high entropy alloys: Mechanical and magnetic properties investigation.
• Poulia, Anthoula; S. Azar, Amin; Gunnæs, Anette Eleonora; Bazioti, Kalliopi; Mikheenko, Pavlo & Diplas, Spyridon (2021). Tailoring mechanical and magnetic properties of the FeCoNi(AlMn)x high entropy alloys via compositional alterations.
• Bazioti, Kalliopi; Olsen, Vegard Skiftestad; Azarov, Alexander; Johansen, Klaus Magnus H; Kuznetsov, Andrej & Vines, Lasse [Vis alle 7 forfattere av denne artikkelen] (2021). Thermal evolution of point and extended defects in N-implanted ZnO and (ZnO)1−x(GaN)x thin films: STEM-EELS investigations.
• Bazioti, Kalliopi; Poulia, Anthoula; Løvvik, Ole Martin; S. Azar, Amin; Mikheenko, Pavlo & Diplas, Spyridon [Vis alle 7 forfattere av denne artikkelen] (2021). Structural evolution of FeCoNi(AlMn)x high-entropy alloy and impact on magnetic properties: nano-scale STEM-EELS investigations.
• Larsen, Aleksander; Poulia, Anthoula; S. Azar, Amin; Bazioti, Kalliopi; Almeida Carvalho, Patricia & Gunnæs, Anette Eleonora [Vis alle 9 forfattere av denne artikkelen] (2021). Identifying Magnetic Phases in Additively Manufactured High-Entropy Alloy FeCoNiAlxMnx.
• Bazioti, Kalliopi; Poulia, Anthoula; Løvvik, Ole Martin; S. Azar, Amin; Mikheenko, Pavlo & Diplas, Spyridon [Vis alle 7 forfattere av denne artikkelen] (2021). Advanced Scanning Transmission Electron Microscopy investigations of FeCoNi(AlMn)x high-entropy alloy: nanoscale structure and impact on magnetic properties.
• Bazioti, Kalliopi; Poulia, Anthoula; Løvvik, Ole Martin; Almeida Carvalho, Patricia; S. Azar, Amin & Mikheenko, Pavlo [Vis alle 8 forfattere av denne artikkelen] (2021). STEM-EELS investigations and Lorentz microscopy unravelling the structural evolution of FeCoNi(AlMn)x high-entropy alloy and its impact on magnetic properties.
• Bazioti, Kalliopi; Olsen, Vegard Skiftestad; Azarov, Alexander; Johansen, Klaus Magnus H; Svensson, Bengt Gunnar & Kuznetsov, Andrej [Vis alle 8 forfattere av denne artikkelen] (2020). Role of nitrogren in defect evolution in ZnO and (ZnO)₁−ₓ(GaN)ₓ: STEM-EELS nanoscale investigations.
• Poulia, Anthoula; S. Azar, Amin; Svec, Peter; Bazioti, Kalliopi; Belle, Branson & Gunnæs, Anette Eleonora [Vis alle 8 forfattere av denne artikkelen] (2020). Nanoscale Magnetic Properties of Additively Manufactured FeCoNiAlxMnx High-Entropy Alloys. Vis sammendrag

  Magnetic properties of High-Entropy Alloys based on the Fe-Co-Ni-Al-Mn system are reported. High-Entropy Alloys are cutting-edge technological materials containing five or more elements in relatively high concentrations (5–35 at.%) within one or several solid-state solutions. These solutions are stabilized at the nanometer scale due to the high contribution of the mixing entropy to the Gibbs free energy, which can overcome the enthalpic contribution. Two magnetic alloys are found in FeCoNiAlxMnx (1.6 at.%  x  7.8 at.%) samples processed by laser metal deposition. The magnetic techniques used to screen the materials were magneto-optical imaging and magnetic force microscopy. The former allows characterizing magnetic properties within the mm-μm scale, while the latter is efficient down to the nanometer scale. Magnetic screening confirms the importance of the nanostructure in defining magnetic properties of the alloys, and the trends in the magnetic behavior as a function of the alloy composition are revealed. The experimental results suggest that it is possible to form unique alloys, which may outperform conventional magnetic materials used in a variety of applications such as transformers, screening shields and wind power generators.

• Bazioti, Kalliopi (2020). Novel (M,Ga)2O3 thin film heterostructures: preliminary Transmission Electron Microscopy investigations .
• Bazioti, Kalliopi (2020). Role of Nitrogen in Defect Evolution in Zinc Oxide: STEM−EELS Nanoscale Investigations.
• Bazioti, Kalliopi (2019). Resolving Energy Materials with Transmission Electron Microscopy.
• Bazioti, Kalliopi; Olsen, Vegard Skiftestad; Azarov, Alexander; Kuznetsov, Andrej; Vines, Lasse & Prytz, Øystein (2019). Defect formation and thermal evolution in ZnO-based structures (Highlight talk).
• Bazioti, Kalliopi (2019). Defect formation and thermal evolution in ZnO-based structures.
• Vasquez, Geraldo Cristian; Bazioti, Kalliopi; Galeckas, Augustinas; Johansen, Klaus Magnus H; Granerød, Cecilie Skjold & Nguyen, Phuong Dan [Vis alle 8 forfattere av denne artikkelen] (2019). Luminescent properties of Zn2GeO4 nanoparticles embedded in ZnO.
• Haug, Kristian; Nguyen, Phuong Dan; Karlsen, Ole Bjørn; Aarholt, Thomas; Bazioti, Kalliopi & Prytz, Øystein (2019). Zinc ferrite spinel embedded in ZnO matrix for solar applications.
• Nguyen, Phuong Dan; Granerød, Cecilie Skjold; Aarseth, Bjørn Lupton; Bazioti, Kalliopi; Azarov, Alexander & Svensson, Bengt Gunnar [Vis alle 8 forfattere av denne artikkelen] (2019). Structural and optical properties of individual Zn2GeO4 particles embedded in ZnO.
• Bazioti, Kalliopi; Olsen, Vegard Skiftestad; Johansen, Klaus Magnus H; Azarov, Alexander; Kuznetsov, Andrej & Vines, Lasse [Vis alle 7 forfattere av denne artikkelen] (2019). Transmission Electron Microscopy methods for atomic-scale investigations of semiconductor properties .
• Bazioti, Kalliopi; Olsen, Vegard Skiftestad; Alexander, Azarov; Kuznetsov, Andrej; Vines, Lasse & Prytz, Øystein (2019). STEM-EELS investigation of defect formation and thermal evolution in ZnO.
• Bazioti, Kalliopi (2019). Quantification of chemical inhomogeneities in III-V ternary alloys by Valence Electron Energy-Loss Spectroscopy.
• Bazioti, Kalliopi (2018). Defect formation in Nitrogen-implanted ZnO: a STEM-EELS study.
• Bazioti, Kalliopi (2018). Defect characterization using (S)TEM methods and EELS.
• Bazioti, Kalliopi; Granerød, Cecilie Skjold; Olsen, Vegard Skiftestad; Vines, Lasse; Svensson, Bengt Gunnar & Prytz, Øystein (2018). (ZnO)1-X(GaN)X thin films studied by high-resolution structural and spectroscopic imaging .
• Bazioti, Kalliopi; Azarov, Alexander; Svensson, Bengt Gunnar & Prytz, Øystein (2018). An aberration-corrected (S)TEM study of N-induced defects in ZnO: formation and thermal evolution.
• Bazioti, Kalliopi; Granerød, Cecilie Skjold; Olsen, Vegard Skiftestad; Vines, Lasse; Svensson, Bengt Gunnar & Prytz, Øystein (2018). Structural-chemical characterization and bandgap measurements at the nanoscale of (ZnO)1-X(GaN)X thin films using (S)TEM methods .
• Bazioti, Kalliopi; Azarov, Alexander; Svensson, Bengt Gunnar & Prytz, Øystein (2018). (S)TEM characterization and thermal evolution of ion-induced defects in ZnO.
• Olsen, Vegard Skiftestad; Bazioti, Kalliopi; Azarov, Alexander; Granerød, Cecilie Skjold; Svensson, Bengt Gunnar & Kuznetsov, Andrej [Vis alle 8 forfattere av denne artikkelen] (2018). Bandgap bowing in crystalline (ZnO)1-x(GaN)x thin films.
• Bazioti, Kalliopi; Granerød, Cecilie Skjold; Olsen, Vegard Skiftestad; Vines, Lasse; Svensson, Bengt Gunnar & Prytz, Øystein (2017). Structural/chemical characterization and bandgap measurements of (ZnO)1-X(GaN)X thin films using (S)TEM methods.
• Bazioti, Kalliopi; Granerød, Cecilie Skjold; Olsen, Vegard Skiftestad; Vines, Lasse; Svensson, Bengt Gunnar & Prytz, Øystein (2017). Structural and chemical characterization of (ZnO)1-X(GaN)X thin films using (S)TEM methods.
• Bazioti, Kalliopi; Granerød, Cecilie Skjold; Olsen, Vegard Skiftestad; Vines, Lasse; Svensson, Bengt Gunnar & Prytz, Øystein (2017). (S)TEM characterization of magnetron sputtered ZnO:GaN alloy thin films.
• Bazioti, Kalliopi; Granerød, Cecilie Skjold; Olsen, Vegard Skiftestad; Vines, Lasse; Svensson, Bengt Gunnar & Prytz, Øystein (2017). Structural characterization and nanoscale bandgap measurements of (ZnO)1-X(GaN)X thin films.

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