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Magnetization temperature dependence in Fe/Cr superlattices |
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| Authors: | A A R Fernandes C A Ramos A Macedo Teixeira E E Fullerton |
| Institution: | a Physics Department, Universidade Federal de Espírito Santo, 29060-900, Vitória, ES, Brazil b Centro Atómico Bariloche and Instituto Balseiro Comision Nacional de Energia Atomica, 8400 S.C. de Bariloche, RN, Argentina c Instituto Militar de Engenharia, Praça Gen Tiburcio, URCA, Rio de Janeiro, RJ, Brazil d IBM Almaden, 650 Harry Road, 95120-6099, San Jose, CA, USA |
| Abstract: | We report the temperature dependence of the saturation magnetization, Ms(T), of Fe(t)/Cr(40 Å) superlattices grown on MgO(1 0 0) and MgO(1 1 0) and its variation with Fe-layer thickness (5 Å<t<80 Å). The structure was characterized by X-ray diffraction. Ms(t) vs. T, as measured by DC magnetization and ferromagnetic resonance, show a large interface effect. The origins of this effect are discussed. |
| Keywords: | Fe/Cr superlattices Shape anisotropy |
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