Juraszek J, Zivotsky O, Chiron H, Vaudolon C, Teillet J
CNRS-UMR 6634, Groupe de Physique des Materiaux, Universite de Rouen, BP 12, F-76801 Saint Etienne du Rouvray, France.
Rev Sci Instrum. 2009 Apr;80(4):043905. doi: 10.1063/1.3121215.
We propose a system allowing the characterization of thin magnetic multilayer structures that combine conversion electron Mossbauer spectrometry (CEMS) under applied magnetic field with the magneto-optical Kerr effect (MOKE) technique. Measured hysteresis loops obtained from the MOKE part are used for investigation of sample surface magnetic properties. The CEMS part of such a system is suitable for studying the spatial spin distribution during magnetization reversal under applied magnetic field, whose values are established from the measured MOKE loop. The combined technique is demonstrated on the results obtained at 300 K on an exchange-coupled ferrimagnetic amorphous GdFe/TbFe bilayer, where the center of the GdFe layer is enriched in (57)Fe. Both techniques confirm in-plane uniaxial anisotropy. The spin structure at the position of the probe layer is analyzed for several values of the external magnetic field applied in the hard magnetization axis direction.
我们提出了一种系统，该系统能够对薄磁多层结构进行表征，此结构将施加磁场下的转换电子穆斯堡尔谱（CEMS）与磁光克尔效应（MOKE）技术相结合。从MOKE部分获得的测量磁滞回线用于研究样品表面的磁性。这种系统的CEMS部分适用于研究在施加磁场下磁化反转过程中的空间自旋分布，其磁场值由测量的MOKE回线确定。在300K下对交换耦合亚铁磁性非晶GdFe/TbFe双层进行实验，结果表明了这种组合技术的有效性，其中GdFe层的中心富含（57）Fe。两种技术都证实了面内单轴各向异性。针对在硬磁化轴方向施加的几个外磁场值，分析了探针层位置处的自旋结构。
