Magnetic Susceptibility Studies on CsCrCl 3 and RbCrCl 3
Magnetic Susceptibility Studies on CsCrCl 3 and RbCrCl 3
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CsCrCl 3 和RbCrCl 3 的磁化率研究
DOI：
10.1143/jpsj.53.3191
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发表时间：
1984
影响因子：
1.7
通讯作者：
K. Nagata
中科院分区：
文献类型：
--
作者：
Y. Tazuke;Hidekazu Tanaka;K. Iio;K. Nagata
在4.2K ~ 573 K温度范围内对线型链状Heisenberg反铁磁体CsCrCl 3和RbCrCl 3的磁化率进行了研究.在由合作Jahn-Teller效应引起的晶体学相变发生的温度下，观察到磁化率的温度变化的异常。异常是一个不连续的跳跃或转折点，根据过渡是一级或二级，分别。数据拟合到Fisher的经典理论，和两个磁体的链内交换相互作用常数的温度变化进行评估。该常数在第一级转变温度下不连续地变化，并且在低于第二级转变温度的温度范围内连续地变化。
Magnetic susceptibility studies are made in 4.2 K≦ T ≦573 K on single crystals of linear chain Heisenberg antiferromagnets CsCrCl 3 and RbCrCl 3 . Anomalies in the temperature variation of the susceptibility are observed at temperatures where crystallographic phase transitions caused by cooperative Jahn-Teller effect take place. The anomaly is a discontinuous jump or a turning point according as the transition is of first or second order, respectively. The data are fitted to Fisher's classical theory, and temperature variations of the intrachain exchange interaction constants of the two magnets are evaluated. The constant changes discontinously at the first order transition temperature, and continuously in a temperature range below the second order transition temperature.