Ferromagnetism in LaFeO 3 -LaCrO 3 Superlattices

Author:

Ueda Kenji1,Tabata Hitoshi1,Kawai Tomoji1

Affiliation:

1. The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567, Japan.

Abstract

Ferromagnetic spin order has been realized in the LaCrO 3 -LaFeO 3 superlattices. Ferromagnetic coupling between Fe 3+ and Cr 3+ through oxygen has long been expected on the basis of Anderson, Goodenough, and Kanamori rules. Despite many studies of Fe-O-Cr–based compounds, random positioning of Fe 3+ and Cr 3+ ions has frustrated the observation of ferromagnetic properties. By creating artificial superlattices of Fe 3+ and Cr 3+ layer along the [111] direction, ferromagnetic ordering has been achieved.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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