Magnetic properties of EuS-SrS semiconductor multilayer structures

作者：Szot M^*; Kowalczyk L; Deptula P; Domukhovski V; Osinny V; Smajek E; Szczerbakow A; Sipatov A Yu; Volobuev V V; Fedorov A G; Story T

来源：Acta Physica Polonica, A, 2007, 112(2): 419-424.

Magnetic and structural properties of EuS-SrS semiconductor multilayers were studied by SQUID and magneto-optical Kerr effect magnetometry techniques and by X-ray diffraction method. The multilayers composed of mono crystalline, lattice matched ferromagnetic EuS layers (thickness 35-50 angstrom) and nonmagnetic SrS spacer layers (thickness 45-100 angstrom) were grown epitaxially on KCl (001) substrates with PbS buffer layer. Ferromagnetic transition in EuS-SrS multilayers was found at the Curie temperature T-c = 17 K. The multilayers exhibit only weak in-plane magnetic anisotropy with [110] easy magnetization axis. Coercive field of EuS-SrS multilayers shows a linear increase with decreasing temperature. Magneto-optical mapping of magnetic hysteresis loops of the multilayers revealed good spatial homogeneity of their magnetic properties.

• 出版日期2007-8