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Preparation and Exchange Bias of a Cr2O3/(La0.7Sr0.3)MnO3 Magnetic Hetero Junction

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Abstract:

We investigated the magnetic interaction between antiferromagnetic, magnetoelectric Cr2O3 film and ferromagnetic La0.7Sr0.3MnO3 film, which shows colossal magneto-resistance. Magnetic properties and structural analyses revealed that a decrease in the thickness of La0.7Sr0.3MnO3 films gives rise to a change in magnetic anisotropy from perpendicular to in-plane. The exchange interaction between Cr2O3 and La0.7Sr0.3MnO3 also changed depending on the magnetic properties of La0.7Sr0.3MnO3. This suggests that the crystallographical control and the selection of a suitable thickness of La0.7Sr0.3MnO3 are important to obtain an exchange interaction in the magnetic hetero system using colossal magneto-resistance material.

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Periodical:

Key Engineering Materials (Volume 388)

Pages:

289-292

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.388.289

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Online since:

September 2008

Authors:

Takeshi Yokota, Takaaki Kuribayashi, Shotaro Murata, Manabu Gomi

Keywords:

Dielectric Property, Epitaxial Growth, Exchange Interaction, Magneto-Electric Material, Thin Film

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© 2009 Trans Tech Publications Ltd. All Rights Reserved

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