Exchange interactions in antiferromagnetic complex perovskites

被引：33
作者：
Todate, Y [1 ]
机构：
[1] Ochanomizu Univ, Dept Phys, Bunkyo Ku, Tokyo 1128610, Japan
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1999年 / 60卷 / 8-9期
关键词：
magnetic materials; oxides; neutron scattering; magnetic properties;
D O I：
10.1016/S0022-3697(99)00075-X
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Magnetic interactions between Ni2+ spins in ordered complex perovskites, cubic Ba2NiWO6 and tetragonal Sr2NiWO6, have been investigated. Analysis of the spin-wave excitation spectrum has shown that the 90 degrees-interaction is substantially small compared with 180 degrees-interaction at low temperatures. The results have remarkable resemblance to NiO. This would imply that the interactions between spins in these oxides should be discussed more carefully by taking the hybridization of Ni3d-O2p-W5d and the spin structure into consideration. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1173 / 1175
页数：3
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