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- 1. Appl. Phys. Lett. 90, 072502 (2007) , “Effect of oxygen vacancies on spin-dependent tunneling in Fe/MgO/Fe magnetic tunnel junctions”, J. P. Velev, K. D. Belashchenko, S. S. Jaswal, and E. Y. TsymbalFirst-principles calculations based on density functional theory are used to elucidate the effect of O vacancies, forming F centers, on spin-dependent tunneling in Fe/MgO/Fe(001) magnetic tunnel junctions. O vacancies produce occupied localized s states and unoccupied resonant p... (Read more)
- 2. Phys. Rev. B 74, 184117 (2006) , “Ab initio thermodynamic properties of point defects and O-vacancy diffusion in Mg spinels”, Zbigniew odziana and Jacek PiechotaWe report ab initio plane wave density functional theory studies of thermodynamic properties of isolated cation substitutions and oxygen vacancies in magnesium spinel, MgAl2O4. The formation enthalpy of Ca, Cu, and Zn substitutions of Mg cation indicate that transition... (Read more)
- 3. Solid State Commun. 112, 541-544 (1999) , “A new EPR centre of Er3+ in MgO or ZnO co-doped LiNbO3 single crystals”, D. Bravo, A. Mart?n , F. J. L?pezElectron Paramagnetic Resonance (EPR) experiments have been carried out on congruent crystals of LiNbO3 heavily doped with Mg or Zn and co-doped with Er. In addition to the EPR spectrum previously observed in crystals of LiNbO3:Er3+ an erbium spectrum not reported before is detected in samples... (Read more)
- 4. J. Phys. Chem. Solids 32, 499-509 (1971) , “Trapped-hole centers containing lithium in MgO, CaO and SrO”, O. F. SchirmerWe report an ESR investigation of a center in MgO, CaO and SrO consisting of an O− ion neighbored by a substitutional Li+ ion. The center is identified by comparison with the isomorphous centers in ZnO and BeO and with the analogous V1, VOH and VF centers in the alkaline earth oxides. The... (Read more)
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Updated at 2010-07-20 16:50:39
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