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Academic interests

Materials physics: Understanding the fundamental properties of grain boundaries on the nanoscale

Machine Learning: By applying the Gaussian Process and using Bayesian Optimization, we are able to reduce our CPU-cost on the supercomputer with up to 90 %. 

Density functional theory: Determining atomic structures on the nanoscale.

Electron holography: Measuring the electrostatic potential across the grain boundary. With inline electron holography, we use the TEM to detect variations in the potential with resolution around 1 nanometer.



  • PhD student, Department of Physics, 2015-now
  • Management consultant in PA Consulting, 2014-2015
  • Master of Science at Norwegian University of Science and Technology (NTNU), 2008-2014.
  • Exchange student to University of California, Berkeley, 2011-2012.




Functional Oxides for clean energy technologies (FOXCET)


  • Bondevik, Tarjei; Polfus, Jonathan Marc & Norby, Truls Eivind (2020). Disagreements between space charge models and grain boundary impedance data in yttrium-substituted barium zirconate. Solid State Ionics.  ISSN 0167-2738.  353 . doi: 10.1016/j.ssi.2020.115369 Full text in Research Archive. Show summary
  • Bondevik, Tarjei; Kuwabara, Akihide & Løvvik, Ole Martin (2019). Application of machine learning-based selective sampling to determine BaZrO3 grain boundary structures. Computational Materials Science.  ISSN 0927-0256.  164, s 57- 65 . doi: 10.1016/j.commatsci.2019.03.054 Full text in Research Archive.
  • Bondevik, Tarjei; Ness, Heine Håland; Bazioti, Kalliopi; Norby, Truls Eivind; Løvvik, Ole Martin; Koch, Christoph T. & Prytz, Øystein (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 Full text in Research Archive. Show summary
  • Dirdal, Christopher Andrew; Bondevik, Tarjei & Skaar, Johannes (2015). Relaxed dispersion constraints and metamaterial effective parameters with physical meaning for all frequencies. Physical Review B. Condensed Matter and Materials Physics.  ISSN 1098-0121.  91(13) . doi: 10.1103/PhysRevB.91.134102

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  • Bondevik, Tarjei (2019). Grain boundaries in a BaZrO3-based proton conductor. A theoretical and experimental study on atomic scale.
  • Bondevik, Tarjei; Prytz, Øystein & Norby, Truls Eivind (2019). Investigation of the electrostatic potential of a grain boundary in Y-substituted BaZrO3 using inline electron holography.
  • Bondevik, Tarjei & Løvvik, Ole Martin (2018). Applying Machine Learning-based Selective Sampling to determine Grain Boundary Structures.
  • Bondevik, Tarjei; Norby, Truls Eivind & Bjørheim, Tor Svendsen (2018). Validating approximations commonly used in space charge modelling.
  • Ness, Heine Håland; Bondevik, Tarjei & Prytz, Øystein (2018). Basic principle of electron holography.
  • Ness, Heine Håland; Prytz, Øystein & Bondevik, Tarjei (2018). Inline Electron Holography - Theoretical and experimental aspects. Show summary
  • Norby, Truls Eivind; Min, Chen & Bondevik, Tarjei (2018). Space-charge and its effects on solid-oxide electrode kinetics.
  • Norby, Truls Eivind; Min, Chen; Bondevik, Tarjei & Polfus, Jonathan M. (2018). Space Charge Layers and Their Role for Properties of Interfaces in Solid State Ionics.
  • Bondevik, Tarjei (2017). Charge separation in ceramics investigated by electron holography.
  • Bondevik, Tarjei (2017). Investigating BaZr0.85Y0.15O3 space charge layers with density functional theory.
  • Bondevik, Tarjei (2017). Space charge layers around BZY grain boundaries.
  • Bondevik, Tarjei (2017). Space charge layers around barium zirconate grain boundaries.
  • Olsen, Claude R.; Bredesen, Rune; Bernuy-Lopez, Carlos; Bondevik, Tarjei & Chen, Min (2016, 14. april). New generation of researchers making their mark. [Internett].

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Published Nov. 27, 2015 2:14 PM - Last modified Feb. 15, 2019 9:36 PM

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