Strain induced magnetic domain evolution and spin re-orientation transition in epitaxial manganite films

The evolution of magnetic domain structure in epitaxial La\(_{0.625}\)Ca\(_{0.375}\)MnO\(_3\) films on (001) NdGaO\(_3\) is monitored as a function of temperature and magnetic field using Magnetic Force Microscopy. We see two distinct regions of magnetic orientational order; one in-plane displaying...

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Bibliographic Details
Published in:arXiv.org 2012-08
Main Authors: Singh, Gyanendra, Rout, P K, Porwal, Rajni, Budhani, R C
Format: Article
Language:English
Subjects:
Evolution
Free energy
Image contrast
Magnetic domains
Magnetic fields
Manganites
Splitting
Online Access:Get full text
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Summary:The evolution of magnetic domain structure in epitaxial La\(_{0.625}\)Ca\(_{0.375}\)MnO\(_3\) films on (001) NdGaO\(_3\) is monitored as a function of temperature and magnetic field using Magnetic Force Microscopy. We see two distinct regions of magnetic orientational order; one in-plane displaying contrast-less image and the other tilted away from the film plane forming a distinct stripe pattern. A strong domain splitting is observed at the boundary of two regions, which is resilient to reorientation with temperature and magnetic field. We propose a model magnetic free energy functional to explain the mechanism of domain splitting seen in manganite films.
ISSN:2331-8422
DOI:10.48550/arxiv.1208.3387