Elastic properties of magnetic materials
Elastic properties of magnetic materials
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磁性材料的弹性性能
DOI：
10.1016/0370-1573(79)90039-5
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发表时间：
1979
期刊：
影响因子：
--
通讯作者：
M. Lines
中科院分区：
文献类型：
--
作者：
M. Lines
本文讨论了磁弹性耦合的理论方面，重点讨论了弹性性质的磁摄动。阐述了磁致伸缩的基本理论及其在铁磁体、铁磁体和反铁磁体中的应用，然后讨论了局域和流动磁系统中磁弹性耦合系数的物理来源。然后讨论了磁对弹性顺性的贡献，并研究了磁相变附近的声速异常，包括合作Jahn-Teller极限，即使在没有发生磁有序的情况下，声模式本身也会驱动结构转变。本文最后讨论了低温磁有序相中的磁弹性（或混合磁子-声子）波，并研究了磁稀材料中的局部伸缩现象。后者导致对内部重排模式的识别，这种重排模式也可能存在于集中的磁性系统中，并且可能或可能不与体均质应变显著耦合。
This review discusses the theoretical aspects of magnetoelastic coupling with emphasis on the magnetic perturbation of elastic properties. The basic theory of magnetostriction is set out with application to ferromagnets, ferrimagnets and antiferromagnets, and is followed by a discussion of the physical origin of the magnetoelastic coupling coefficients in both localized and itinerant magnetic systems. Magnetic contributions to elastic compliance are then discussed and sound velocity anomalies near magnetic phase transitions investigated, including the cooperative Jahn-Teller limit for which the acoustic mode itself drives a structural transition even when magnetic ordering does not occur. The review concludes with discussion of magnetoelastic (or mixed magnon-phonon) waves in low temperature magnetically ordered phases and with a study of local striction phenomena in magnetically dilute materials. The latter leads to a recognition of internal rearrangement modes which may also be present in concentrated magnetic systems, and which may or may not couple significantly to bulk homogenous strain.