Affiliation:
1. Leshan Teachers’ College
Abstract
The local distortion of the impurity Ni+ center in magnesium oxide is theoretically studied by analyzing its electron paramagnetic resonance g factor from the formula of a 3d9 ion under octahedra with tetragonal elongation deformation. The defect center is suggested to exhibit the relative elongation along the four-fold axis by about 0.05 Å of the Jahn-Teller nature. The observed isotropic g factor ( 2.2391) is attributable to the dynamical average of the anisotropic g values under tetragonal elongation due to the dynamical Jahn-Teller effect.
Publisher
Trans Tech Publications, Ltd.
Subject
Condensed Matter Physics,General Materials Science,Radiation
Reference25 articles.
1. T. Furusawa, A. Tsutsumi: Appl. Catalysis A Vol. 278 (2005), p.207.
2. S. Takenaka, S. Sato, R. Takahashi, T. Sodesawa: Phys. Chem. Chem. Phys. Vol. 5 (2003), p.4968.
3. A. Moronta, N. Iwasa, S.I. Fujita, M. Shimokawabe, M. Arai: Clays and Clay Minerals Vol. 53 (2005), p.622.
4. V. Skvortsova, N. Mironova-Ulmane, U. Ulmanis: CIMTEC 2002- 3rd Forum on new materials 2nd International conference, P. Vincenzini, V. Buscaglia (Edited) Techna Srl. (2003), p.41.
5. G. Lauhoff, C.A.F. Vaz, J.A.C. Bland: J. Phys. Condens. Matter Vol. 21 (2009), p.156002.