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Fabrication of EuO films by oxidation of Eu metal films

Published online by Cambridge University Press:  31 January 2011

X.J. Yu ,
E. Batalla  and
L.S. Wright
X.J. Yu
Affiliation:
Department of Physics, Royal Military College of Canada, Kingston, Ontario, Canada, K7K5L0
E. Batalla
Affiliation:
Department of Physics, Royal Military College of Canada, Kingston, Ontario, Canada, K7K5L0
L.S. Wright
Affiliation:
Department of Physics, Royal Military College of Canada, Kingston, Ontario, Canada, K7K5L0
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Abstract

Ferromagnetic europium (EuO) films have been made by oxidizing europium (Eu) metal films deposited on glass substrates using a thermal evaporation technique. It has been found that the quality of the films is sensitive to substrate temperature. Stable EuO films were formed only if Eu metal films were annealed at temperatures of 320 to 380 °C. Both x-ray diffraction pattern (XRD) and magnetization measurements indicate that a significant amount of EuO phase has been formed in the films. These films undergo a phase transition from paramagnetic to ferromagnetic phase at temperatures between 60 and 70 K and exhibit the magneto-optical Faraday effect. The saturation magnetic moment at 10 K is about 40% of the theoretical value, and the coercive force, Hc, for slow sweeping field is about 70 Oe.

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 3 , March 1993 , pp. 462 - 466
Copyright
Copyright © Materials Research Society 1993

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