Magnetization processes and spin reorientation in epitaxial NdCo5±x thin films
Magnetization processes and spin reorientation in epitaxial NdCo5±x thin films
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外延 NdCo5±x 薄膜的磁化过程和自旋重定向
DOI：
10.1063/1.3240334
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发表时间：
2009
影响因子：
3.2
通讯作者：
V. Neu
中科院分区：
文献类型：
--
作者：
M. Seifert;L. Schultz;V. Neu
采用脉冲激光沉积技术在MgO（11 - 10）衬底上制备了标称Nd含量为17%的Nd - co薄膜。织构测量证明了单一外延平面内织构，并表明薄膜由NdCo5+x和Nd2Co7相组成。良好的织构是精确测量各向异性磁性行为的先决条件，从而使研究这些薄膜中的自旋取向转变成为可能。在不同温度下的磁滞测量发现，在310和255 K的转变温度下，易磁化方向从沿c的易轴到沿a的易锥再到易轴发生了变化。在易磁化c轴（400 K）和易磁化a轴（200 K）状态下，平行于易磁化方向的外加磁场的磁滞量呈方形，且根据Kondorsky的1/cos φ依赖关系，开关场随场角φ偏差的增大而增大[J]。理论物理。（苏联）2,161(1940)]。这被解释为……
Nd–Co thin films with a nominal composition of 17% Nd have been prepared by pulsed laser deposition on MgO(1 1 0) substrates. Texture measurements prove a single epitaxial in-plane texture and suggest that the films consist of a NdCo5+x and a Nd2Co7 phase. The very good texture is a precondition for precise angle dependent measurements of the anisotropic magnetic behavior and thus enables the investigation of spin reorientation transitions in these thin films. Hysteresis measurements at various temperatures find the change in the easy magnetization direction from easy axis along c to easy cone and further to easy axis along a at transition temperatures of 310 and 255 K. Both in the easy c-axis (400 K) and the easy a-axis (200 K) states, the hysteresis is square shaped for applied fields parallel to the easy magnetization direction and the switching field increases with increasing deviation of the field angle φ according to Kondorsky’s 1/cos φ dependence [J. Phys. (USSR) 2, 161 (1940)]. This is interpreted...