Magneto-optical properties of BaTiO3/La0.76Sr0.24MnO3/BaTiO3 heterostructures

M. Moog; S. R. Singamaneni; J. T. Prater; M. D. Biegalski; F. Tsui

doi:10.1063/1.5006458

AIP Advances (May 2018)

Magneto-optical properties of BaTiO3/La0.76Sr0.24MnO3/BaTiO3 heterostructures

M. Moog,
S. R. Singamaneni,
J. T. Prater,
M. D. Biegalski,
F. Tsui

Affiliations

M. Moog: Department of Physics and Astronomy, University of North Carolina, Chapel Hill, NC 27599, USA
S. R. Singamaneni: Department of Physics, The University of Texas at El Paso, El Paso, TX 79968, USA
J. T. Prater: Materials Science Division, Army Research Office, Research Triangle Park, NC 27709, USA
M. D. Biegalski: Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
F. Tsui: Department of Physics and Astronomy, University of North Carolina, Chapel Hill, NC 27599, USA

DOI: https://doi.org/10.1063/1.5006458
Journal volume & issue: Vol. 8, no. 5
pp. 055820 – 055820-6

Abstract

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The magnetic properties of epitaxial BaTiO3/La0.76Sr0.24MnO3/BaTiO3 (BTO/LSMO/BTO) heterostructures have been studied using magneto-optic Kerr effect (MOKE) technique. Both longitudinal and polar MOKE were probed as a function of magnetic field and temperature (in the range between 80 and 320 K) for epitaxial films of BTO/LSMO/BTO and LSMO grown on TiO2-terminated SrTiO3 (001) substrates by pulsed laser deposition technique. The LSMO film without the BTO layers exhibits nearly square field-dependent MOKE hysteresis loops with low saturation fields below a bulk-like Curie temperature (TC) of ∼ 350K. In contrast, the film with the BTO layers exhibits a significantly suppressed TC of 155 K, accompanied by significantly enhanced coercive fields and perpendicular magnetic anisotropy.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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