The pressure effect on the enhanced itinerant paramagnetism of Ni3Al and TiCo compounds
The pressure effect on the enhanced itinerant paramagnetism of Ni3Al and TiCo compounds
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压力对Ni3Al和TiCo化合物增强巡回顺磁性的影响
DOI：
10.1088/0953-8984/7/16/011
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
I. V. Svechkarev
中科院分区：
文献类型：
--
作者：
P. Brommer;G. Grechnev;J. Franse;A. Panfilov;Y. Pushkar’;I. V. Svechkarev
在20-293 K温度范围内研究了压力对Ni_3Al和TiCo化合物磁化率的影响。所获得的磁体积效应值dlnJ/dlnV和作为晶格常数的函数的费米能级处的态密度的详细理论计算的结果被用于评估电子-电子相互作用参数J的体积导数：dlnJ/dlnV=-0.9+或-0.15（Ni 3Al）和-0.95+或-0.15（TiCo）。这些结果进行了比较与从头计算LMTO能带结构计算的dlnJ/dlnV的理论估计。
The pressure effect on the magnetic susceptibility of Ni3Al and TiCo compounds is studied in the temperature range 20-293 K. The obtained magnetovolume effect values dln chi /dlnV and results of detailed theoretical calculations of density of states at the Fermi level as a function of the lattice constant were used to evaluate volume derivatives of the electron-electron interaction parameter J: dlnJ/dlnV=-0.9+or-0.15 (Ni3Al) and -0.95+or-0.15 (TiCo). These results are compared with theoretical estimates of dlnJ/dlnV from ab initio LMTO band structure calculations.