Ferromagnetic Transition of Heisenberg Ferromagnetic Metal of CoS2 –Static Critical Properties–
Ferromagnetic Transition of Heisenberg Ferromagnetic Metal of CoS2 –Static Critical Properties–
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CoS2 海森堡铁磁金属的铁磁转变 – 静态临界特性 –
DOI：
10.1143/jpsj.63.4573
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Y. Endoh
中科院分区：
文献类型：
--
作者：
H. Hiraka;Y. Endoh
通过使用化学输运技术生长的高质量单晶的各种实验技术，对 CoS 2 中居里温度附近的静磁特性进行了深入研究。磁化强度非常小的各向异性证实 CoS 2 是应用海森堡哈密顿量的最佳系统。临界指数服从静态标度假设，这表明温度引起的局部矩对铁磁转变的影响可以忽略不计。然而，静态临界特性表明，尽管CoS 2 中的磁转变是连续的，但磁转变接近三临界点。
The static magnetic properties near the Curie temperature in CoS 2 have been thoroughly studied by using various experimental techniques from high quality single crystals, which were grown by the chemical transport technique. A very small anisotropy in magnetization confirms that CoS 2 is the best system to apply the Heisenberg Hamiltonian. The critical indices obey the static scaling hypothesis, which indicates negligible effect of the temperature-induced local moment on the ferromagnetic transition. However, the static critical properties suggest that the magnetic transition is close to the tricritical point, although the magnetic transition in CoS 2 is continuous.