Influence of the Al2O3 layer on the structural and temperature-dependent magnetic properties of thin cobalt films

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Abstract

We studied cobalt films deposited by the magnetron method on an amorphous Al2O3 layer. The morphological and magnetic features associated with the formation of a naturally oxidized antiferromagnetic film on cobalt and the Al2O3/Co interface were studied. A change in the sign of the exchange bias at temperatures below 200 K was detected when the thickness of the cobalt layer on the Al2O3 film increased to more than 10 nm.

About the authors

A. V Kobyakov

Siberian Federal University; Federal Research Center "Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences"

Email: nanonauka@mail.ru
Krasnoyarsk, Russia

G. S Patrin

Siberian Federal University; Federal Research Center "Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences"

Krasnoyarsk, Russia

V. I Yushkov

Siberian Federal University; Federal Research Center "Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences"

Krasnoyarsk, Russia

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