Investigations on the Anisotropic g Factors of the Ni^{3+} Site in La_2Ni_{0.5}Li_{0.5}O_4

• Authors: M. Kuang , S. Wu , Z. Zhang , B. Song
• Languages of publication: EN

Abstracts

EN

The anisotropic g factors g_{∥} and g_{⊥} of La_2Ni_{0.5}Li_{0.5}O_4 are theoretically investigated using the perturbation formulae of the g factors for a low spin (S=1/2) 3d^7 ion in tetragonally elongated octahedra. The studied Ni^{3+} (3d^7) center arises from the original Ni^{2+} capturing one hole by Li^{+} doping. The positive anisotropy Δ g (= g_{⊥}-g_{∥}) can be ascribed to the lowest ^2 A_{1g} state due to the obvious (about 0.14 Å) tetragonal elongation of the oxygen octahedron around the Ni^{3+} site via the Jahn-Teller effect, and the effective magnetic moment is also interpreted in a uniform way. The calculated results show good agreement with the experimental data, and the imperfection of the previous studies based on various adjusted tetragonal energy splittings without correlating to the local structure of the magnetic center is thus overcome in this work.

Keywords

EN

76.30.Fc; 71.70.Ch; 75.10.Dg

Discipline

• 71.70.Ch: Crystal and ligand fields
• 76.30.Fc: Iron group (3d) ions and impurities (Ti-Cu)
• 75.10.Dg: Crystal-field theory and spin Hamiltonians(see also 71.70.Ch Crystal and ligand fields)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 123
• Issue: 4
• Pages: 734-736

Dates

published

2013-04

received

2011-06-01

Contributors

author

M. Kuang

• School of Physical Electronics, University of Electronic Science and Technology of China Chengdu 610054, P. R. China

author

S. Wu

• School of Physical Electronics, University of Electronic Science and Technology of China Chengdu 610054, P. R. China

author

Z. Zhang

• School of Physical Electronics, University of Electronic Science and Technology of China Chengdu 610054, P. R. China

author

B. Song

• School of Physical Electronics, University of Electronic Science and Technology of China Chengdu 610054, P. R. China

References

• 1. L. Lu, Y. Guo, H. Zhang, J. Jin, Mater. Res. Bull. 45, 1135 (2010)
• 2. E.N. Naumovich, V.V. Kharton, J. Mol. Struct.: TheoChem. 946, 57 (2010)
• 3. D. Pérez-Coll, A. Aguadero, M.J. Escudero, P. Núñez, L. Daza, J. Power Sources 178, 151 (2008)
• 4. D.P. Huang, Q. Xu, W. Chen, F. Zhang, H.X. Liu, Ceram. Inter. 34, 651 (2008)
• 5. P.G. Freeman, S.M. Hayden, C.D. Frost, D. Prabhakaran, A.T. Boothroyd, J. Magn. Magn. Mater. 310, 760 (2007)
• 6. Y. Li, S. Yao, W. Wen, L. Xue, Y. Yan, J. Alloys Comp. 491, 560 (2010)
• 7. C. Guo, X. Zhang, J. Zhang, Y. Wang, J. Mol. Catal. A 269, 254 (2007)
• 8. R.R. Urbano, A. Garcia, E. Granado, J.A. Sanjurjo, L. Torriani, Phys. Rev. B 62, 9593 (2000)
• 9. A. Abragam, B. Bleaney, Electron Paramagnetic Resonance of Transition Ions, Oxford University Press, London 1970
• 10. R. Lacroix, U. Hochli, K.A. Muller, Helv. Phys. Acta 37, 627 (1964)
• 11. Y.V. Yablokov, T.A. Ivanova, Coord. Chem. Rev. 190-192, 1255 (1999)
• 12. Y. Tanabe, S. Sugano, J. Phys. Soc. Jpn. 9, 753 (1954)
• 13. S.Y. Wu, J.Z. Lin, Q. Fu, H.M. Zhang, Phys. Scr. 75, 147 (2007)
• 14. D.J. Newman, B. Ng, Rep. Prog. Phys. 52, 699 (1989)
• 15. H.N. Dong, M.R. Dong, J.J. Li, Q.C. Li, X. Hong, , 208 (2012).Z.Y. Yang, J. Chongqing Univ. Posts Telecommun. 24, 206 (2012)
• 16. K.A. Muller, W. Berlinger, R.S. Rubins, Phys. Rev. 186, 361 (1969)
• 17. E. Clementi, D.L. Raimondi, W.P. Reinhardt, J. Chem. Phys. 47, 1300 (1967)
• 18. J.S. Griffith, The Theory of Transition-Metal Ions, Cambridge University Press, London 1964
• 19. E.K. Hodgson, I. Fridovich, Biochem. Biophys. Res. Commun. 54, 270 (1973)
• 20. M.G. Zhao, J.A. Xu, G.R. Bai, H.S. Xie, Phys. Rev. B 27, 1516 (1983)

Identifiers

DOI

10.12693/APhysPolA.123.734