Magnetic anomalies in EuO/nonmagnetic insulator multilayered films
- National Institute of Materials and Chemical Research, 1-1 Higashi, Tsukuba, Ibaraki 305 (Japan)
Ferromagnetic EuO multilayered films (MLs) were fabricated with nonmagnetic oxides such as MgO, ZrO{sub 2}, and Y{sub 2}O{sub 3}. The EuO MLs showed increased Curie temperature (T{sub c}) and metal insulator transition temperature (T{sub mi}) than the bulk values due to oxygen deficiency. However, {sup 151}Eu M{umlt o}ssbauer spectra did not exhibit such an anomaly in T{sub c}. It suggests a field induced magnetic component in the MLs. Significant increase of coercive force (H{sub c}) with decreasing EuO layer thickness was observed only in EuO/MgO MLs. It was suggested that this increase was originated from a kind of interface effect. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 496576
- Report Number(s):
- CONF-961141--
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 8 Vol. 81; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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