Magnetic excitations of bandwidth-controlled Mn perovskite (La1-x-yYy)SrxMnO3

被引：5
|
作者：
Hirota, K [1 ]
Nishizawa, A [1 ]
Endoh, Y [1 ]
机构：
[1] Tohoku Univ, Dept Phys, Sendai, Miyagi 98077, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1998年 / 177卷
关键词：
exchange coupling - double; magnetoresistance - transition metals; neutron scattering - inelastic; spin dynamics;
D O I：
10.1016/S0304-8853(97)00930-X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Inelastic neutron-scattering measurements were carried out to study the spin dynamics of colossal magnetoresistance material (La1-x-yYy)SrxMnO3, where the electronic bandwidth can be controlled by the average rare-earth ionic radius, i.e., the Mn-O-Mn bond angle. The normalized spin-wave stiffness D/T-C and energy width of spin waves, Gamma, at various temperatures were measured. which are discussed in comparison with the double-exchange model. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：864 / 866
页数：3
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