Ponniah Ravindran

Researcher

Academic Interests

Electronic structure studies on solids using state-of the-art density functional methods.

   General Interest

  • Nanophase materials
  • Hydrogen Storage Materials
  • Solar Energy Materials including Tranparent conducting oxides
  • Defects in semiconductors
  • Linear, nonlinear optical properties and other Excited State properties
  • Magneto-optical and Magneto-caloric materials.
  • Magnetic properties, Magnetic anisotropy, Spin, Charge and Orbital ordering
  • Multi-ferroic and other multifunctional materials
  • Structural Phase Stability and High Pressure studies
  • Theory of Alloy Formation
  • Mechanical properties of structural/aerospace engineering materials Superconductivity and  phonons
  • Catalytic Material
Tags: SMN, Inorganic materials chemistry

Publications

  • M R, Ashwin Kishore & Ponniah, Ravindran (2017). Enhanced photocatalytic water splitting in C2N monolayer by C-site isoelectronic substitution. ChemPhysChem.  ISSN 1439-4235.  18(12), s 1526- 1532 . doi: 10.1002/cphc.201700165
  • M R, Ashwin Kishore & Ponniah, Ravindran (2017). Te Doped Indium (II) Selenide Photocatalyst for Water Splitting: A First Principles Study. AIP Conference Proceedings.  ISSN 0094-243X.  1832, s 090029
  • R, Varunaa & Ponniah, Ravindran (2017). Structural Phase Stability in Fluorinated Calcium Hydride. AIP Conference Proceedings.  ISSN 0094-243X.  1832, s 030005
  • Kishore, M. R. Ashwin; Okamoto, Hiroshi; Patra, Lokanath; Vidya, Ravindran; Sjåstad, Anja Olafsen; Fjellvåg, Helmer & Ponniah, Ravindran (2016). Theoretical and experimental investigation on structural, electronic and magnetic properties of layered Mn5O8. Physical Chemistry, Chemical Physics - PCCP.  ISSN 1463-9076.  18(40), s 27885- 27896 . doi: 10.1039/c6cp04170a
  • Lokanath, Patra; M R, Ashwin Kishore; R, Vidya; Anja O, Sjåstad; H, Fjellvåg & Ponniah, Ravindran (2016). Electronic and magnetic structures of hole doped trilayer La4-xSrxNi3O8 from first principles calculations. Inorganic Chemistry.  ISSN 0020-1669.  55, s 11898- 11907
  • M R, Ashwin Kishore; H, Okamoto; Lokanath, Patra; R, Vidya; Anja O, Sjåstad; H, Fjellvåg & Ponniah, Ravindran (2016). Theoretical and experimental investigation on structural, electronic, and magnetic properties of layered Mn5O8. Physical Chemistry, Chemical Physics - PCCP.  ISSN 1463-9076.  18, s 27885- 27896
  • Patra, Lokanath; Kishore, M. R. Ashwin; Vidya, Ravindran; Sjåstad, Anja Olafsen; Fjellvåg, Helmer & Ponniah, Ravindran (2016). Electronic and magnetic structures of hole doped trilayer La4-xSrxNi3O8 from first-principles calculations. Inorganic Chemistry.  ISSN 0020-1669.  55(22), s 11898- 11907 . doi: 10.1021/acs.inorgchem.6b01938
  • Iozzi, Maria Francesca; Vajeeston, Ponniah; Vidya, R.; Ravindran, Ponniah & Fjellvåg, Helmer (2015). Structural and electronic properties of transparent conducting delafossite: a comparison between the AgBO2 and CuBO2 families (B = Al, Ga, In and Sc, Y). RSC Advances.  ISSN 2046-2069.  5(2), s 1366- 1377 . doi: 10.1039/c3ra47531j
  • Manimuthu, P.; Vidya, R.; Ravindran, Ponniah; Fjellvåg, Helmer & Venkateswaran, C. (2015). Observation of direct magneto-dielectric behaviour in Lu3Fe5O12−δ above room-temperature. Physical Chemistry, Chemical Physics - PCCP.  ISSN 1463-9076.  17(27), s 17688- 17698 . doi: 10.1039/c5cp02719e
  • Yang, Li-Ming; Ravindran, Ponniah & Tilset, Mats (2013). Solid-State Structure and Calculated Electronic Structure, Formation Energy, Chemical Bonding, and Optical Properties of Zn4O(FMA)(3) and Its Heavier Congener Cd4O(FMA)(3). Inorganic Chemistry.  ISSN 0020-1669.  52(8), s 4217- 4228 . doi: 10.1021/ic301928a
  • Yang, Li-Ming; Ravindran, Ponniah; Vajeeston, Ponniah; Svelle, Stian & Tilset, Mats (2013). A quantum mechanically guided view of Cd-MOF-5 from formation energy, chemical bonding, electronic structure, and optical properties. Microporous and Mesoporous Materials.  ISSN 1387-1811.  175, s 50- 58 . doi: 10.1016/j.micromeso.2013.03.020
  • Vajeeston, Ponniah; Ravindran, Ponniah & Fjellvåg, Helmer (2012). Prediction of structural, lattice dynamical, and mechanical properties of CaB2. RSC Advances.  ISSN 2046-2069.  2(31), s 11687- 11694 . doi: 10.1039/c2ra21807k
  • Vajeeston, Ponniah; Sartori, Sabrina; Ravindran, Ponniah; Knudsen, Kenneth; Hauback, Bjørn & Fjellvåg, Helmer (2012). MgH2 in Carbon Scaffolds: A Combined Experimental and Theoretical Investigation. Journal of Physical Chemistry C.  ISSN 1932-7447.  116(40), s 21139- 21147 . doi: 10.1021/jp3008199
  • Vidya, R.; Ravindran, Ponniah & Fjellvåg, Helmer (2012). Ab-initio studies on Li doping, Li-pairs, and complexes between Li and intrinsic defects in ZnO. Journal of Applied Physics.  ISSN 0021-8979.  111(12) . doi: 10.1063/1.4729774
  • Yang, Li-Ming; Ravindran, Ponniah; Vajeeston, Ponniah & Tilset, Mats (2012). Ab initio investigations on the crystal structure, formation enthalpy, electronic structure, chemical bonding, and optical properties of experimentally synthesized isoreticular metal-organic framework-10 and its analogues: M-IRMOF-10 (M = Zn, Cd, Be, Mg, Ca, Sr and Ba). RSC Advances.  ISSN 2046-2069.  2(4), s 1618- 1631 . doi: 10.1039/c1ra00187f
  • Yang, Li-Ming; Ravindran, Ponniah; Vajeeston, Ponniah & Tilset, Mats (2012). Formation of an intermediate band in isoreticular metal-organic framework-993 (IRMOF-993) and metal-substituted analogues M-IRMOF-993. Journal of Materials Chemistry.  ISSN 0959-9428.  22(32), s 16324- 16335 . doi: 10.1039/c2jm31360j
  • Yang, Li-Ming; Ravindran, Ponniah; Vajeeston, Ponniah & Tilset, Mats (2012). Properties of IRMOF-14 and its analogues M-IRMOF-14 (M = Cd, alkaline earth metals): electronic structure, structural stability, chemical bonding, and optical properties. Physical Chemistry, Chemical Physics - PCCP.  ISSN 1463-9076.  14(14), s 4713- 4723 . doi: 10.1039/c2cp24091b
  • Frommen, Christoph; Sørby, Magnus Helgerud; Ravindran, Ponniah; Vajeeston, Ponniah; Fjellvåg, Helmer & Hauback, Bjørn (2011). Synthesis, crystal structure, and thermal properties of the first mixed-metal and anion-substituted rare earth borohydride LiCe(BH4)3Cl. Journal of Physical Chemistry C.  ISSN 1932-7447.  115(47), s 23591- 23602 . doi: 10.1021/jp205105j Full text in Research Archive.
  • Karazhanov, Smagul; Ravindran, Ponniah & Grossner, Ulrike (2011). First-principles study on electronic structure, phase stability, and optical properties of In2X2O7 (X= C, Si, Ge or Sn). Thin Solid Films.  ISSN 0040-6090.  519(19), s 6561- 6567 . doi: 10.1016/j.tsf.2011.04.221 Full text in Research Archive.
  • Vajeeston, Ponniah; Ravindran, Ponniah & Fjellvåg, Helmer (2011). Phonon, IR, and Raman Spectra, NMR Parameters, and Elastic Constant Calculations for AlH3 Polymorphs. Journal of Physical Chemistry A.  ISSN 1089-5639.  115(39), s 10708- 10719 . doi: 10.1021/jp2011342
  • Vajeeston, Ponniah; Ravindran, Ponniah & Fjellvåg, Helmer (2011). Stability enhancement by particle size reduction in AlH3. Journal of Alloys and Compounds.  ISSN 0925-8388.  509, s S662- S666 . doi: 10.1016/j.jallcom.2010.11.110
  • Vajeeston, Ponniah; Ravindran, Ponniah; Hauback, Bjørn & Fjellvåg, Helmer (2011). Prediction of crystal structure, lattice dynamical, and mechanical properties of CaB2H2. International journal of hydrogen energy.  ISSN 0360-3199.  36(16), s 10149- 10158 . doi: 10.1016/j.ijhydene.2011.05.038
  • Vidya, Ravindran; Ravindran, Ponniah; Fjellvåg, Helmer; Svensson, Bengt Gunnar; Monakhov, Edouard; Ganchenkova, Maria & Nieminen, Risto G. (2011). Energetics of intrinsic defects and their complexes in ZnO investigated by density functional calculations. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  83(4) . doi: 10.1103/PhysRevB.83.045206
  • Yang, Li-Ming; Vajeeston, Ponniah; Ravindran, Ponniah; Fjellvåg, Helmer & Tilset, Mats (2011). Revisiting isoreticular MOFs of alkaline earth metals: a comprehensive study on phase stability, electronic structure, chemical bonding, and optical properties of A-IRMOF-1 (A = Be, Mg, Ca, Sr, Ba). Physical Chemistry, Chemical Physics - PCCP.  ISSN 1463-9076.  13(21), s 10191- 10203 . doi: 10.1039/c0cp02944k
  • Karazhanov, Smagul & Ravindran, Ponniah (2010). Ab Initio Study Of Double Oxides ZnX2O4 (X=Al, Ga, In) Having Spinel Structure. Journal of The American Ceramic Society.  ISSN 0002-7820.  93(10), s 3335- 3341 . doi: 10.1111/j.1551-2916.2010.03864.x
  • Sæterli, Ragnhild; Selbach, Sverre Magnus; Ravindran, Ponniah; Grande, Tor & Holmestad, Randi (2010). Electronic structure of multiferroic BiFeO3 and related compounds: Electron energy loss spectroscopy and density functional study. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  82(6) . doi: 10.1103/PhysRevB.82.064102
  • Vajeeston, Ponniah; Ravindran, Ponniah & Fjellvåg, Helmer (2010). Nono-structures of NaBH4 and KBH4. Journal of Nanoscience and Nanotechnology.  ISSN 1533-4880.  11(3), s 2296- 2318 . doi: 10.1166/jnn.2010.3517
  • Vajeeston, Ponniah; Ravindran, Ponniah & Fjellvåg, Helmer (2010). Structural investigation and thermodynamical properties of alkali calcium trihydrides. Journal of Chemical Physics.  ISSN 0021-9606.  132(11) . doi: 10.1063/1.3299732
  • Yang, Li-Ming; Vajeeston, Ponniah; Ravindran, Ponniah; Fjellvåg, Helmer & Tilset, Mats (2010). Theoretical Investigations on the Chemical Bonding, Electronic Structure, And Optical Properties of the Metal-Organic Framework MOF-5. Inorganic Chemistry.  ISSN 0020-1669.  49(22), s 10283- 10290 . doi: 10.1021/ic100694w
  • Karazhanov, Smagul; Ravindran, Ponniah; Fjellvåg, Helmer & Svensson, Bengt Gunnar (2009). Electronic structure and optical properties of ZnSiO3 and Zn2SiO4. Journal of Applied Physics.  ISSN 0021-8979.  106(12) . doi: 10.1063/1.3268445 Full text in Research Archive.
  • Karazhanov, Smagul; Ravindran, Ponniah; Vajeeston, Ponniah; Ulyashin, AG; Fjellvåg, Helmer & Svensson, Bengt Gunnar (2009). Phase stability and pressure-induced structural transitions at zero temperature in ZnSiO3 and Zn2SiO4. Journal of Physics: Condensed Matter.  ISSN 0953-8984.  21(48) . doi: 10.1088/0953-8984/21/48/485801 Full text in Research Archive.
  • Karlsen, Ole Bjørn; Kjekshus, Arne; Fjellvåg, Helmer; Ravindran, Ponniah; Vidya, R. & Hauback, BC (2009). Structure and magnetism of the beta-Mn-Co solid-solution phase. Journal of Alloys and Compounds.  ISSN 0925-8388.  476(1-2), s 9- 13 . doi: 10.1016/j.jallcom.2008.09.011
  • Klaveness, Arne; Fjellvåg, Helmer; Kjekshus, Arne; Ravindran, Ponniah & Swang, O (2009). A semi-empirical approach to accurate standard enthalpies of formation for solid hydrides. Journal of Alloys and Compounds.  ISSN 0925-8388.  469(1-2), s 617- 622 . doi: 10.1016/j.jallcom.2008.02.060
  • Vajeeston, Ponniah; Ravindran, Ponniah & Fjellvåg, Helmer (2009). Nanostructures of LiBH4: a density-functional study. Nanotechnology.  ISSN 0957-4484.  20(27) . doi: 10.1088/0957-4484/20/27/275704
  • Vajeeston, Ponniah; Ravindran, Ponniah & Fjellvåg, Helmer (2009). Predicting New Materials for Hydrogen Storage Application. Materials.  ISSN 1996-1944.  2, s 2296- 2318 . doi: 10.3390/ma2042296
  • Karazhanov, Smagul; Ulyashin, AG; Ravindran, Ponniah & Vajeeston, Ponniah (2008). Semiconducting hydrides. Europhysics letters.  ISSN 0295-5075.  82 . doi: 10.1209/0295-5075/82/17006
  • Karazhanov, Smagul; Ulyashin, AG; Vajeeston, Ponniah & Ravindran, Ponniah (2008). Hydrides as materials for semiconductor electronics. Philosophical Magazine.  ISSN 1478-6435.  88, s 2461- 2476 . doi: 10.1080/14786430802360362
  • Offernes, Laila; Ravindran, Ponniah; Seim, CW & Kjekshus, Arne (2008). Prediction of composition for stable half-Heusler phases from electronic-band-structure analyses. Journal of Alloys and Compounds.  ISSN 0925-8388.  458, s 47- 60 . doi: 10.1016/j.jallcom.2007.04.038
  • Ravindran, Ponniah; Vidya, R.; Eriksson, O & Fjellvåg, Helmer (2008). Magnetic-instability-induced giant magnetoelectric coupling. Advanced Materials.  ISSN 0935-9648.  20, s 1353- + . doi: 10.1002/adma.200701889
  • Ravindran, Ponniah; Vidya, R.; Fjellvåg, Helmer & Kjekshus, Arne (2008). Validity of bond-length and Mossbauer parameters to assign oxidation states in multicomponent oxides: Case study of Sr4Fe4O11. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  77 . doi: 10.1103/PhysRevB.77.134448 Show summary
  • Vajeeston, Ponniah; Ravindran, Ponniah & Fjellvåg, Helmer (2008). Novel High Pressure Phases of beta-AlH3: A Density-Functional Study. Chemistry of Materials.  ISSN 0897-4756.  20(19), s 5997- 6002 . doi: 10.1021/cm800282b
  • Vajeeston, Ponniah; Ravindran, Ponniah & Fjellvåg, Helmer (2008). Structural phase stability studies on MBeH3 (M = Li, Na, K, Rb, Cs) from density functional calculations. Inorganic Chemistry.  ISSN 0020-1669.  47 . doi: 10.1021/ic7015897 Show summary
  • Vajeeston, Ponniah; Ravindran, Ponniah & Fjellvåg, Helmer (2008). Theoretical investigations on low energy surfaces and nanowires of MgH2. Nanotechnology.  ISSN 0957-4484.  19 . doi: 10.1088/0957-4484/19/27/275704
  • Vajeeston, Ponniah; Ravindran, Ponniah; Kjekshus, Arne & Fjellvåg, Helmer (2008). First-principles investigations of the MMgH3 (M = Li, Na, K, Rb, Cs) series. Journal of Alloys and Compounds.  ISSN 0925-8388.  450 . doi: 10.1016/j.jallcom.2006.10.163
  • Vidya, R.; Ravindran, Ponniah; Knizek, K; Kjekshus, Arne & Fjellvåg, Helmer (2008). Density functional theory studies of spin, charge, and orbital ordering in YBaT2O5 (T = Mn, Fe, Co). Inorganic Chemistry.  ISSN 0020-1669.  47, s 6608- 6620 . doi: 10.1021/ic702025c Show summary
  • Yartys, Volodymyr; Vajeeston, Ponniah; Riabov, Alexander Bronoslavovich; Ravindran, Ponniah; Denys, Roman Volodymyrovich; Mæhlen, Jan Petter; Delaplane, Robert G. & Fjellvåg, Helmer (2008). Crystal chemistry and metal-hydrogen bonding in anisotropic and interstitial hydrides of intermetallics of rare earth (R) and transition metals (T), RT3 and R2T7. Zeitschrift fur Kristallographie.  ISSN 0044-2968.  223(10), s 674- 689 . doi: 10.1524/zkri.2008.1030
  • Karazhanov, Smagul; Ravindran, Ponniah; Kjekshus, Arne; Fjellvåg, Helmer & Svensson, Bengt Gunnar (2007). Electronic structure and optical properties of ZnX (X=O, S, Se, Te): A density functional study. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  75 . doi: 10.1103/PhysRevB.75.155104
  • Karazhanov, Smagul; Ravindran, Ponniah; Vajeeston, Ponniah; Ulyashin, A; Finstad, Terje & Fjellvåg, Helmer (2007). Phase stability, electronic structure, and optical properties of indium oxide polytypes. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  76(7) . doi: 10.1103/PhysRevB.76.075129
  • Karazhanov, Smagul; Ravindran, Ponniah; Vajeeston, Ponniah & Ulyashin, AG (2007). Hydride electronics. Physica status solidi. A, Applied research.  ISSN 0031-8965.  204, s 3538- 3544
  • Klaveness, Arne; Vajeeston, Ponniah; Ravindran, Ponniah; Fjellvåg, Helmer & Kjekshus, Arne (2007). Structure and bonding in BA1H(5) (B = Be, Ca, Sr) from first-principle calculations. Journal of Alloys and Compounds.  ISSN 0925-8388.  433 . doi: 10.1016/j.jallcom.2006.06.047
  • Lalitha, S; Karazhanov, Smagul; Ravindran, Ponniah; Senthilarasu, S; Sathyamoorthy, R & Janabergenov, J (2007). Electronic structure, structural and optical properties of thermally evaporated CdTe thin films. Physica. B, Condensed matter.  ISSN 0921-4526.  387, s 227- 238 . doi: 10.1016/j.physb.2006.04.008
  • Offernes, Laila; Ravindran, Ponniah & Kjekshus, Arne (2007). Electronic structure and chemical bonding in half-Heusler phases. Journal of Alloys and Compounds.  ISSN 0925-8388.  439, s 37- 54 . doi: 10.1016/j.jallcom.2006.08.316
  • Søndenå, Rune; Søndenå, Rune; Stølen, Svein; Ravindran, P.; Ravindran, Ponniah; Grande, Tor & Allan, Neil L. (2007). Corner- versus face-sharing octahedra in AMnO3 perovskites (A=Ca, Sr, and Ba). Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  75, s 184105-1- 184105-10 . doi: 10.1103/PhysRevB.75.184105
  • Søndenå, Rune; Søndenå, Rune; Stølen, Svein; Ravindran, Ponniah; Ravindran, P. & Grande, Tor (2007). Heat capacity and lattice dynamics of cubic and hexagonal SrMnO3: Calorimetry and density functional theory simulations. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  75, s 214307-1- 214307-8 . doi: 10.1103/PhysRevB.75.214307
  • Vajeeston, Ponniah; Ravindran, Ponniah & Fjellvåg, Helmer (2007). A new series of high hydrogen content hydrogen-storage materials - A theoretical prediction. Journal of Alloys and Compounds.  ISSN 0925-8388.  446, s 44- 47 . doi: 10.1016/j.jallcom.2006.12.058
  • Karazhanov, Smagul; Ravindran, Ponniah; Grossner, Ulrike; Kjekshus, Arne; Fjellvåg, Helmer & Svensson, Bengt Gunnar (2006). Strong coulomb correlation effects in ZnO. Solid State Communications.  ISSN 0038-1098.  139, s 391- 396
  • Karazhanov, Smagul; Ravindran, Ponniah; Kjekshus, Arne; Fjellvåg, Helmer; Grossner, Ulrike & Svensson, Bengt Gunnar (2006). Coulomb correlation effects in zinc monochalcogenides. Journal of Applied Physics.  ISSN 0021-8979.  100
  • Klaveness, Arne; Vajeeston, Ponniah; Ravindran, Ponniah; Fjellvåg, Helmer; Li, Yanjun & Kjekshus, Arne (2006). Structural phase stability and bonding behavior of BAlH5 (B=Mg,Ba) from first-principles calculations. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  73
  • Ravindran, Ponniah; Vajeeston, Ponniah; Vidya, R.; Fjellvåg, Helmer & Kjekshus, A (2006). Modeling of hydrogen storage materials by density-functional calculations. Journal of Power Sources.  ISSN 0378-7753.  159, s 88- 99
  • Ravindran, Ponniah; Vidya, R.; Kjekshus, Arne; Fjellvåg, Helmer & Eriksson, O. (2006). Theoretical investigation of magnetoelectric behavior in BiFeO3. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  74
  • Vajeeston, Ponniah; Ravindran, Ponniah; Hauback, BC; Fjellvåg, Helmer; Kjekshus, Arne; Furuseth, Sigrid Breien & Hanfland, M (2006). Structural stability and pressure-induced phase transitions in MgH2. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  73
  • Vajeeston, Ponniah; Ravindran, Ponniah; Kjekshus, Arne & Fjellvåg, Helmer (2006). High hydrogen content complex hydrides: A density-functional study. Applied Physics Letters.  ISSN 0003-6951.  89
  • Vidya, R.; Ravindran, Ponniah; Fjellvåg, Helmer & Kjekshus, Arne (2006). Spin- and charge-ordering in oxygen-vacancy-ordered mixed-valence Sr4Fe4O11. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  74
  • Vidya, R.; Ravindran, Ponniah; Kjekshus, A & Fjellvåg, Helmer (2006). Density-functional calculations of the crystal structures and properties of CsCr3O8 and ACr(3)O(8) (A=In,Tl,Cu,Ag,Au). Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  73
  • Vidya, R.; Ravindran, Ponniah; Kjekshus, Arne & Fjellvåg, Helmer (2006). Crystal and electronic structures of Cr3O8 and LiCr3O8: Probable cathode materials in Li batteries. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  73
  • Vidya, R.; Ravindran, Ponniah; Kjekshus, Arne & Fjellvåg, Helmer (2006). First-principles density-functional calculations on HCr3O8: An exercise to better understand the ACr(3)O(8) (A = alkali metal) family. Journal of Electroceramics.  ISSN 1385-3449.  17, s 15- 20 . doi: 10.1007/s10832-006-9929-6
  • Stølen, Svein; Mohn, Chris Erik; Ravindran, Ponniah & Allan, Neil (2005). The topography of the potential energy hypersurface and criteria for fast-ion-conduction in perovskite-related A2B2O5-oxides. Journal of Physical Chemistry B.  ISSN 1520-6106.  109, s 12362- 12365
  • Mohn, Chris Erik; Allan, N.L.; Freeman, C.L.; Ravindran, Ponniah & Stølen, Svein (2005). Order in the disordered state: local structural entities in the fast ion conductor Ba2In2O5. Journal of Solid State Chemistry.  ISSN 0022-4596.  178, s 346- 355
  • Vajeeston, Ponniah; Ravindran, Ponniah; Kjekshus, Arne & Fjellvåg, Helmer (2005). Structural stability of alkali boron tetrahydrides ABH(4) (A = Li, Na, K, Rb, Cs) from first principle calculation. Journal of Alloys and Compounds.  ISSN 0925-8388.  387(1), s 97- 104 Show summary
  • Ravindran, Vidya; Ponniah, Ravindran; Kjekshus, Arne; Fjellvåg, Helmer & Hauback, Bjørn (2004). Magnetic properties of Ca-doped SrRuO3 from full-potential calculations. Journal of Solid State Chemistry.  ISSN 0022-4596.  177, s 146- 158 Show summary
  • Mohn, Chris Erik; Allan, N.L.; Freeman, C.L.; Ponniah, Ravindran & Stølen, Svein (2004). Collective ionic motion in oxide fast-ion-conductors. Physical Chemistry, Chemical Physics - PCCP.  ISSN 1463-9076.  6, s 3052- 3055
  • Ponniah, Ravindran; Ponniah, Vajeeston; Fjellvåg, Helmer & Kjekshus, Arne (2004). Chemical-bonding and high-pressure studies on hydrogen-storage materials. Computational materials science.  ISSN 0927-0256.  30, s 349- 357 Show summary
  • Ponniah, Ravindran; Ravindran, Vidya; Fjellvåg, Helmer & Kjekshus, Arne (2004). Electronic structure and excited-state properties of Perovskite-like oxides. Journal of Crystal Growth.  ISSN 0022-0248.  268, s 554- 559 Show summary
  • Ponniah, Vajeeston; Ponniah, Ravindran; Fjellvåg, Helmer & Kjekshus, Arne (2004). Search for metal hydrides with short hydrogen-hydrogen separation: Ab initio calculations. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  70, s art. no.- 014107 Show summary
  • Ponniah, Vajeeston; Ponniah, Ravindran; Kjekshus, Arne & Fjellvåg, Helmer (2004). Crystal structure of KAlH4 from first principle calculations. Journal of Alloys and Compounds.  ISSN 0925-8388.  363, s L7- L11 Show summary
  • Ponniah, Vajeeston; Ponniah, Ravindran; Kjekshus, Arne & Fjellvåg, Helmer (2004). Structural stability and electronic structure for Li3AlH6. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  69, s art. no.- 020104 Show summary
  • Ponniah, Vajeeston; Ponniah, Ravindran; Kjekshus, Arne & Fjellvåg, Helmer (2004). Structural stability of BeH2 at high pressures. Applied Physics Letters.  ISSN 0003-6951.  84, s 34- 36
  • Ponniah, Vajeeston; Ponniah, Ravindran; Ravindran, Vidya; Fjellvåg, Helmer & Kjekshus, Arne (2004). Design of potential hydrogen-storage materials using first-principle density-functional calculations. Crystal Growth & Design.  ISSN 1528-7483.  4, s 471- 477
  • Ravindran, Vidya; Ponniah, Ravindran; Ponniah, Vajeeston; Fjellvåg, Helmer & Kjekshus, Arne (2004). Spin, charge, and orbital orderings in oxides with dual-valent transition metal ions. Ceramics International.  ISSN 0272-8842.  30, s 1993- 1998 Show summary
  • Ravindran, Vidya; Ponniah, Ravindran; Ponniah, Vajeeston; Kjekshus, Arne & Fjellvåg, Helmer (2004). Effect of oxygen stoichiometry on spin, charge, and orbital ordering in manganites. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  69, s art. no.- 092405 Show summary
  • Offernes, Laila; Ravindran, Ponniah & Kjekshus, Arne (2003). Prediction of large polar Kerr rotation in the Heusler-related alloys AuMnSb and AuMnSn. Applied Physics Letters.  ISSN 0003-6951.  82(17), s 2862- 2864
  • Ravindran, Ponniah; Kjekshus, Arne; Fjellvåg, Helmer; Puschnig, P.; Ambrosch-Draxl, C.; Nordstrom, L. & Johansson, B. (2003). Raman- and infrared-active phonons in superconducting and nonsuperconducting rare-earth transition-metal borocarbides from full-potential calculations. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  67(10), s 104507/1- 104507/11
  • Ravindran, Ponniah; Vidya, R.; Vajeeston, Ponniah; Kjekshus, Arne & Fjellvåg, Helmer (2003). Ground- and excited-state properties of inorganic solids from full-potential density-functional calculations. Journal of Solid State Chemistry.  ISSN 0022-4596.  176(2), s 338- 374
  • Vajeeston, Ponniah; Ravindran, Ponniah; Vidya, R.; Fjellvåg, Helmer & Kjekshus, Arne (2003). Pressure-induced phase of NaAlH4: A potential candidate for hydrogen storage?. Applied Physics Letters.  ISSN 0003-6951.  82(14), s 2257- 2259
  • Vajeeston, Ponniah; Ravindran, Ponniah; Vidya, R.; Kjekshus, Arne; Fjellvåg, Helmer & Yartys, V.A. (2003). Short hydrogen-hydrogen separation in RNiInH1.333 (R=La, Ce, Nd). Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  67(1), s 014101/1- 014101/11
  • Vidya, R.; Ravindran, Ponniah; Fjellvåg, Helmer; Kjekshus, Arne & Eriksson, Olof (2003). Tailor-Made Electronic and Magnetic Properties in One-Dimensional Pure and Y-Substituted Ca3Co2O6. Physical Review Letters.  ISSN 0031-9007.  91(18), s 186404/1- 186404/4

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  • Lokanath, Patra & Ponniah, Ravindran (2017). First-principles prediction of coexistence of magnetism and ferroelectricity in BiFeWO6.
  • Lokanath, Patra & Ponniah, Ravindran (2017). Prediction of Magnetoelectric behavior in Bi2MnTiO6. AIP Conference Proceedings.  ISSN 0094-243X.  1832, s 130053
  • M R, Ashwin Kishore & Ponniah, Ravindran (2017). Effect of H Impurity on the Photocatalytic Activity of C2N Monolayer.
  • Lokanath, Patra & Ponniah, Ravindran (2015). Electronic and magnetic structures of hole doped trilayer La4Ni3O8 from first principles.
  • M R, Ashwin Kishore & Ponniah, Ravindran (2015). Electronic Structure and Magnetic Properties of Mn5O8.
  • Vajeeston, Ponniah; Ravindran, Ponniah & Fjellvåg, Helmer (2012). Reply to "A comment on 'Prediction of crystal structure, lattice dynamical, and mechanical properties of CaB2H2' by Vajeeston et al., Int J Hydrogen Energy, 36 (2011) 10149-10158" Discussion. International journal of hydrogen energy.  ISSN 0360-3199.  37(3), s 2711- 2712 . doi: 10.1016/j.ijhydene.2011.10.097
  • Kalantzopoulos, Georgios N.; Frommen, Christoph; Sørby, Magnus Helgerud; Ravindran, Ponniah; Fjellvåg, Helmer & Hauback, Bjørn (2011). Crystal Structure and Thermal Properties of Novel Mixed-Metal and Anion-Substituted Borohydrides.
  • Ravindran, Ponniah; Vidya, R.; Fjellvåg, Helmer & Kjekshus, Arne (2008). Reply to "Comment on 'Spin- and charge-ordering in oxygen-vacancy-ordered mixed-valence Sr4Fe4O11' ". Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  77 . doi: 10.1103/PhysRevB.77.136402 Show summary
  • Ravindran, Ponniah; Offernes, Laila & Kjekshus, Arne (2007). Comment on "Optical and magneto-optical properties of AuMnSn" [Appl. Phys. Lett. 88, 121909 (2006)]. Applied Physics Letters.  ISSN 0003-6951.  91 . doi: 10.1063/1.2804560
  • Karazhanov, Smagul; Ravindran, Ponniah; Ulyashin, Alexander; Vajeeston, Ponniah & Finstad, Terje (2006). Electronic Structure and Optical Properties of Indium Tin Oxide.
  • Ravindran, Ponniah; Vajeeston, Ponniah; Kjekshus, Arne & Fjellvåg, Helmer (2003). Chemical-bonding and High-pressure Studies on Hydrogen-storage Materials.
  • Ravindran, Ponniah; Vidya, R.; Kjekshus, Arne & Fjellvåg, Helmer (2003). Electronic Structure and Excited-state Properties of Perovskite-like Oxides.
  • Vajeeston, Ponniah; Ravindran, Ponniah; Vidya, R.; Fjellvåg, Helmer & Kjekshus, Arne (2003). Design of Potential Hydrogen-storage Material using First-principle Density-functional Calculations.
  • Vidya, R.; Ravindran, Ponniah; Fjellvåg, Helmer & Kjekshus, Arne (2003). Spin, Charge and Orbital ordering in Transition metal Oxides.

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Published Mar. 28, 2011 1:57 PM - Last modified Oct. 30, 2012 11:55 AM