Intrinsic magnetic properties of hydrided and non-hydrided Nd 5 Fe 17 single crystals
Intrinsic magnetic properties of hydrided and non-hydrided Nd 5 Fe 17 single crystals
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氢化和非氢化Nd 5 Fe 17 单晶的本征磁性能
DOI：
10.1016/j.jallcom.2018.01.239
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发表时间：
2018
影响因子：
6.2
通讯作者：
O. Gutfleisch
中科院分区：
文献类型：
--
作者：
D. Karpenkov;K. Skokov;M. B. Lyakhova;I. Radulov;T. Faske;Y. Skourski;O. Gutfleisch
本文报道了Nd_5 Fe_（17）和Nd_5 Fe_（17）H_（16）单晶的自发磁化强度Ms、交换刚度常数A和磁晶各向异性常数K_1、K_2、K_3和K_4。在10-600 K温度范围内，磁场高达40 T，测量了沿着a，B'和c主晶向的磁化强度M（H）随磁场的变化关系。这两种化合物的自发磁化强度和高场磁化率的大的各向异性。用布洛赫T3/2定律确定了交换刚度参数A。为了提供K1（T）、K2（T）、K3（T）和K4（T）的高精度检测，我们使用两种不同的方法：改进的Sucksmith-Thompson技术和Néel相位方法。
We report on the spontaneous magnetization Ms, the exchange stiffness constant A and the magnetocrystalline anisotropy constants K1, K2, K3and K4of Nd5Fe17and Nd5Fe17H16single crystals. Field dependencies of magnetization M(H) were measured along a, b' and c principal crystallographic directions within the temperature range of 10–600 K and magnetic fields up to 40 T. Large anisotropies of spontaneous magnetization and high-field susceptibility were revealed for both compounds. The exchange stiffness parameter A was determined using Bloch's T3/2law. In order to provide high accuracy detection of K1(T), K2(T), K3(T) and K4(T), we used two different approaches: the modified Sucksmith- Thompson technique and the Néel's phase method.