Suppression of the magnetocrystalline bulk anisotropy in thin epitaxial Co(110) films on Cu(110)
- We report on an unexpected suppression of the magnetocrystalline anisotropy contribution in epitaxial fcc Co(110) films on Cu(110) below a thickness of dc=(50 +/- 10) Å. For film thicknesses larger than dc the measured anisotropy value agrees with published data. Measurements on films with reduced strain indicate a large strain dependence of dc . A model calculation based on a crystal-field formalism and discussed within the context of band theory, which explicitly takes tetragonal misfit strains into account, reproduces the experimen-tally observed anomalies. Our results indicate that the usually applied phenomenological description of anisotropies, assuming additive free energy terms for each anisotropy contribution, fails in this case.
Author: | Burkard Hillebrands, Jürgen Fassbender, Jungblut R.M., Güntherodt G., Roberts D.J., Gehring G.A. |
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URN: | urn:nbn:de:hbz:386-kluedo-9410 |
Document Type: | Preprint |
Language of publication: | English |
Year of Completion: | 1996 |
Year of first Publication: | 1996 |
Publishing Institution: | Technische Universität Kaiserslautern |
Date of the Publication (Server): | 2000/02/14 |
Faculties / Organisational entities: | Kaiserslautern - Fachbereich Physik |
DDC-Cassification: | 5 Naturwissenschaften und Mathematik / 530 Physik |
Licence (German): | Standard gemäß KLUEDO-Leitlinien vor dem 27.05.2011 |