Influence of the growth conditions on the magnetic properties of fcc cobalt films: from monolayers to superlattices
Influence of the growth conditions on the magnetic properties of fcc cobalt films: from monolayers to superlattices
复制标题
生长条件对面心立方钴薄膜磁性能的影响：从单层到超晶格
DOI：
10.1016/0304-8853(91)90294-k
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发表时间：
1991
影响因子：
2.7
通讯作者：
J. Kirschner
中科院分区：
文献类型：
--
作者：
J. Miguel;A. Cebollada;J. Gallego;R. Miranda;Claus M. Schneider;P. Schuster;J. Kirschner
用多技术手段研究了面心立方钴薄膜在铜(100)衬底上的生长和磁性。在低于T_c的温度下，薄膜是铁磁性的平面有序的。薄膜的居里温度与覆盖率呈线性关系，当覆盖率为5-6个单层时，薄膜的覆盖率达到块状。自旋偏振光电子能谱表明，在5ML处，能带结构已经接近体相结构。在Cu(100)衬底上生长了晶态Co/Cu三明治和超晶格。烟幕发现，在不同厚度的铜层上，Co板条的磁性有序从铁磁转变为反铁磁，然后又回到铁磁。用偏振中子衍射法证实了这种反铁磁有序。随着外加磁场的作用，磁有序转变为具有复杂中间行为的铁磁性。
The growth and magnetic properties of films of fcc cobalt on Cu(100) substrates has been characterized by a multitechnique approach. The films are ferromagnetically ordered in-plane at temperatures belowTc. The Curie temperature of the films displays a linear dependence with the coverage reaching bulk-like behaviour at coverages of 5–6 monolayers. Spin-polarized photoemission shows that the band structure is already close to that of the bulk at 5 ML. Crystalline Co/Cu sandwiches and superlattices have been grown on Cu(100) substrates. The magnetic ordering of Co slabs across Cu layers of varying thicknesses, as explored by SMOKE, changes from ferromagnetic to antiferromagnetic and back to ferromagnetic. The antiferromagnetic ordering has been confirmed by polarized neutron diffraction. As a function of the external magnetic field, the magnetic ordering changes to ferromagnetic with a complex intermediate behaviour.