Thermal and Magnetic Properties of Linear Ferro- and Autiferro-Magnetic Substances, MCl2·2NC5H5(M; Co, Cu)
Thermal and Magnetic Properties of Linear Ferro- and Autiferro-Magnetic Substances, MCl2·2NC5H5(M; Co, Cu)
复制标题
线性铁磁性和铁磁性物质 MCl2·2NC5H5(M; Co, Cu) 的热性能和磁性能
DOI：
10.1143/jpsj.30.1330
复制
发表时间：
1971
影响因子：
1.7
通讯作者：
T. Haseda
中科院分区：
文献类型：
--
作者：
K. Takeda*;S. Matsukawa;T. Haseda
CoCl 2 ·2NC 5 H 5 的磁比热与铁磁性伊辛线性链的精确解一致，在6 K以上J / k = 9.5±0.2 K。理论上预期出现在3.9±0.15 K的宽最大值在4.3±0.2 K处观察到。该盐的磁化率呈现快速增加，这也是铁磁性伊辛线性链的特征。总磁熵Rln 2 的约85%留在Neel点3.17±0.02 K以上。在CuCl 2 ·2NC 5 H 5 的情况下，得到了各向同性海森堡自旋的反铁磁线性链的特征：磁化率与理论计算的磁化率非常一致| J|/k=13.6±0.8K，g=2.06±0.06。首次通过实验确定了理论上预期的最低温度区域比热对温度的线性依赖性。磁比热的绝对实验值与理论值一致......
The magnetic specific heat of CoCl 2 ·2NC 5 H 5 agreed with the exact solution of the ferromagnetic Ising linear chain with J / k =9.5±0.2 K above 6 K. The broad maximum expected theoretically to appear at 3.9±0.15 K was observed at 4.3±0.2 K. The magnetic susceptibility of this salt showed the rapid increase which is also the characteristic of the ferromagnetic Ising linear chain. About 85% of the total magnetic entropy Rln 2 was left above the Neel point 3.17±0.02 K. The characteristic features of the antiferromagnetic linear chain of the isotropic Heisenberg spins were obtained in the case of CuCl 2 ·2NC 5 H 5 : The magnetic susceptibility quite agreed with the one calculated theoretically for | J |/ k =13.6±0.8 K and g =2.06±0.06. The linear dependence of the specific heat on temperature in the lowest temperature region, which is expected theoretically, was ascertained experimentally for the first time. The absolute experimental values of the magnetic specific heat agreed with the theoretical ones for...