Controlling magnetic anisotropy in La0.7Sr0.3MnO3 nanostructures

Wahler, M., Buttner, B., Blaschek, H.H., Homonnay, N., Wid, O., O'Shea, K.J., McGrouther, D. , MacLaren, D.A. and Schmidt, G. (2014) Controlling magnetic anisotropy in La0.7Sr0.3MnO3 nanostructures. Applied Physics Letters, 104, 052408-1. (doi:10.1063/1.4863978)

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Abstract

We have developed a chlorine based dry etching process for nanopatterning the ferromagnetic oxide La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub> (LSMO). Large arrays of millions of identical structures have been fabricated from thin LSMO films by electron-beam lithography and reactive ion etching. SQUID magnetometry demonstrates that patterned nanostructures with lateral dimensions down to 100 nm retain their full magnetization and the Curie temperature of the bulk layer. In addition, their shape anisotropy is sufficient to overcome the crystalline anisotropy of the bulk. High resolution scanning transmission electron microscopy shows that crystallinity is preserved even at the edges of the nanostructures.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:McGrouther, Dr Damien and O'Shea, Miss Kerry and MacLaren, Dr Donald
Authors: Wahler, M., Buttner, B., Blaschek, H.H., Homonnay, N., Wid, O., O'Shea, K.J., McGrouther, D., MacLaren, D.A., and Schmidt, G.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Applied Physics Letters
Publisher:American Institute of Physics
ISSN:0003-6951
ISSN (Online):1077-3118
Copyright Holders:Copyright © 2014 American Institute of Physics
First Published:First published in Applied Physics Letters 104:052408
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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