Thomas Kool

post doc
Amsterdam
PhD in Physical Chemistry at the University of Amsterdam, the Netherlands title thesis: EPR studies of transition metal impurity ions in strontium titanate Scientist and teacher. University level and secondary school in mathematics, physics and chemistry. Worked together with Noble laureate Prof. K. Alex Mueller from Zuerich, Switzerland and Prof. Ortwin F. Schirmer from Osnabrueck, Germany

Publications

  • 1. Th.W. Kool and M. Glasbeek. Photochromic Fe5+ in non-cubic local fields in SrTiO3. Solid State Commun. 22, 193-197 (1977).
  • 2. Th.W. Kool and M. Glasbeek. V4+ in SrTiO3: A Jahn-Teller impurity. Solid State Commun. 32, 1099-1101 (1979).
  • 3. Th.W. Kool and M. Glasbeek. Electric field effects in EPR of the SrTiO3:V4+ Jahn-Teller system. J. Phys.:Condens. Matter 3, 9747-9755 (1991).
  • 4. Th. Varnhorst, E. Possenriede, O.F. Schirmer and Th.W. Kool. O- Trapped Hole Centers in Oxide Perovskites-Structure and Optical Properties. Proceedings of the XII International Conference on Defects in Insulating Materials 2, 685 (1992). Nordkirchen Germany (ed. O. Kanert & J.-M. Spaeth. World Scientific).
  • 5. Th.W. Kool and M. Glasbeek. Electron paramagnetic resonance of photochromic Fe2+-O- in SrTiO3. J. Phys.:Condens. Matter 5, 361-370 (1993).
  • 6. K.A. Müller, K.W. Blazey and Th.W. Kool. Tetrahedrally coordinated Cr5+ in SrTiO3. Solid State Commun. 85, 381-384 (1993).
  • 7. Th.W. Kool, H.J. de Jong and M. Glasbeek. Electric field effects in the EPR of tetrahedrally coordinated Cr5+ in SrTiO3. J. Phys.:Condens. Matter 6, 1571-1576 (1994).
  • 8. R. Scharfschwerdt, O.F. Schirmer, H. Kröse and Th.W. Kool. Oxygen vacancy related defects in BaTiO3. Ferroelectrics 185, 9-12 (1996).
  • 9. Th. Varnhorst, O.F. Schirmer, H. Kröse, R. Scharfschwerdt and Th.W. Kool. O- holes associated with alkali - acceptors in BaTiO3. Phys. Rev. B 53, 116-125 (1996).
  • 10. Th.W. Kool and O.F. Schirmer. Small and intermediate Ti3+ Jahn-Teller polarons in BaTiO3. Electrons and vibrations in solids and finite systems (Jahn-Teller effect). Berlin, Germany (1996).
  • 11. S. Köhne, O.F. Schirmer, H. Hesse, Th.W. Kool and V.K. Vikhnin. Ti3+ Jahn-Teller polarons and bipolarons in BaTiO3. J. of Superconductivity 12, 193-195 (1999).
  • 12. S. Lenjer, R. Scharfschwerdt, Th.W. Kool and O.F. Schirmer. An off-center ion near a Ba site in BaTiO3 as studied by EPR under uniaxial stress. Solid State Commun. 116, 133-136 (2000).
  • 13. S. Lenjer, O.F. Schirmer, H. Hesse and T.W. Kool. Conduction states in oxide perovskites: Three manisfestations of Ti3+ Jahn-Teller polarons in barium titanate. Phys. Rev. B 66, 165106 (2002).
  • 14. S.Lenjer, O.F. Schirmer, H. Hesse and Th.W. Kool. Reply to “Comment on Conduction states in oxide perovskites: Three manifestations of Ti3+ Jahn-Teller polarons in barium titanate.” Phys. Rev. B 70, 157102 (2004).
  • 15. O.F. Schirmer, Th.W. Kool, S. Lenjer and M. Maiwald. EPR of Jahn-Teller polarons in oxide perovskites. phys. stat. sol. (c) 2, 124-127 (2005).
  • 16. Th.W. Kool, S. Lenjer and O.F. Schirmer. Jahn-Teller and off-center defects in BaTiO3: Ni+, Rh2+, Pt3+ and Fe5+ as studied by EPR under uniaxial stress. J. Phys.:Condens. Matter 19, 496214 (15pp) (2007).
  • 17. K. Alex Müller and Tom W. Kool. Properties of perovskites and other oxides. World Scientific (2010).
  • 18. Th.W. Kool. EPR of photochromic Mo3+ in SrTiO3. arXiv: cond-matter.mtrl.sci. 1003.1448 (2010).
  • 19. Th.W. Kool and B. Bollegraaf. Calculation of the zero-field splitting D and gperp parameters in EPR for d3 spin systems in strong and moderate axial fields. arXiv: cond-matter.mtrl.sci. 1005.0159 (2010).
  • 20. Th.W. Kool. Calculation of the orthorhombic E-parameter in EPR for d3 spin systems. arXiv: cond-matter.mtrl.sci. 1105.0616 (2011).
  • 21. Th.W. Kool. EPR studies of the 105 K phase transition of SrTiO3 with the non-cubic Fe5+ as local probe and a reinterpretation of other Fe5+ centres. arXiv: cond-matter.mtrl.sci. 1201.3386 (2012).
  • 22. Niek G Schultheiss and Tom W Kool. Fluorescence for high school students. arXiv: physics.ed-ph 1207.5456 (2012).
  • 23. Th.W.Kool. Description of a specialized stress equipment for EPR X-band measurements. arXiv: cond-matter.mtrl.sci. 1710.04427 (2017).