Valence Instability inEu(Pd1−xAux)2Si2: The Global Phase Diagram
Valence Instability inEu(Pd1−xAux)2Si2: The Global Phase Diagram
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Eu(Pd1−xAux)2Si2 中的价态不稳定性：全局相图
DOI：
10.1103/physrevlett.49.1947
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发表时间：
1982
影响因子：
8.6
通讯作者：
R. Parks
中科院分区：
文献类型：
--
作者：
C. Segre;M. Croft;J. Hodges;V. Murgai;L. C. Gupta;R. Parks
已经发现了一种系统，其中价态不稳定性和磁有序不稳定性的特征能量可以达到宇称。这导致了一种新颖的相图，其中二阶磁跃迁线终止于一阶价态跃迁线，而一阶价态跃迁线又终止于临界点。提出了磁性和价态不稳定性有序参数的微观穆斯堡尔效应测量，以及体磁化率测量。
A system has been discovered in which the characteristic energies of a valence instability and a magnetic ordering instability can be brought into parity. This leads to a novel phase diagram where a line of second-order magnetic transitions terminates at a line of first-order valence transitions which, in turn, terminates at a critical point. Microscopic Mössbauer-effect measurements of the order parameters across both magnetic and valence instabilities, along with bulk magnetic susceptibility measurements, are presented.