ORDER-DISORDER TRANSITION IN AN EXTERNAL FIELD IN RANDOM FERROMAGNETS AND NEMATIC ELASTOMERS
ORDER-DISORDER TRANSITION IN AN EXTERNAL FIELD IN RANDOM FERROMAGNETS AND NEMATIC ELASTOMERS
复制标题
随机铁磁体和向列弹性体外部场中的有序-无序转变
DOI：
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发表时间：
1997
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通讯作者：
E. Terentjev
中科院分区：
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作者：
S. Fridrikh;E. Terentjev
从理论上研究了外场对随机各向异性铁磁体和弹性体的影响。系统随磁场的增加从关联自旋玻璃态演化到准铁磁态，在阈值磁场下发生一级相变，并伴随着平均磁化强度的显著跃变。平均磁化强度的增长是由于重新取向，而不是个别域的增长。我们讨论了额外的硬化机制，增加实验观察到的过渡的阈值，并导致“化石”在对齐的系统中留下的tubewalls。[S0031-9007（97）04747-9]
We study theoretically the effect of external field on random anisotropy ferromagnets and nema elastomers. The system evolves on increasing field from the correlated spin glass state to the alig ferromagnetic state via a first order phase transition at a threshold field accompanied by a signific jump of the average magnetization. The mean magnetization growth is due to reorientation, rather t growth of individual domains. We discuss the additional hardening mechanisms in nematic elastom that increase the threshold of the transition observed experimentally and lead to the “fossil” doma walls left in the aligned system. [S0031-9007(97)04747-9]