Magnetic anomalies in EuO/nonmagnetic insulator multilayered films

Journal Article · Tue Apr 01 04:00:00 EST 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.364524· OSTI ID:496576

Sohma, M; Kawaguchi, K; Oosawa, Y ^[1]

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1. 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

Related Subjects

36 MATERIALS SCIENCE
COERCIVE FORCE
CURIE POINT
EUROPIUM COMPOUNDS
EUROPIUM OXIDES
FERROMAGNETIC MATERIALS
LAYERS
MAGNESIUM COMPOUNDS
MAGNETIC PROPERTIES
MAGNETIC SEMICONDUCTORS
MOESSBAUER EFFECT
THICKNESS
THIN FILMS
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS