Jahn-Teller effects on the superexchange interactions in LaMnO3

被引：35

作者：

Causa, MT ^{[1
]}

Alejandro, G

Zysler, R

Prado, F

Caneiro, A

Tovar, M

机构：

[1] Comis Nacl Energia Atom, Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[2] Comis Nacl Energia Atom, Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[3] Univ Nacl Cuyo, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1999年 / 196卷

关键词：

Jahn-Teller effect; magnetoresistance;

D O I：

10.1016/S0304-8853(98)00856-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present Magnetization and ESR measurements in the paramagnetic phase of ceramic LaMnO3 with carefully controlled stoichiometry. At T approximate to 600 K, near the Jahn-Teller transition observed in this material, we found an important decrease of the ESR linewidth. We explain this observation considering the crucial role of the lattice distortions which strongly affects the anisotropic and isotropic exchange interactions. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：506 / 508

页数：3

共 7 条

[1]

CARVAJAL JR, 1998, PHYS REV B, V57, pR3189

[2] ANTISYMMETRIC EXCHANGE AND EXCHANGE-NARROWED ELECTRON-PARAMAGNETIC-RESONANCE LINEWIDTHS [J].