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arXiv · 1208.3387

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

Gyanendra Singh·P. K. Rout·Rajni Porwal·R. C. Budhani
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Abstract

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.

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Gyanendra Singh, P. K. Rout, Rajni Porwal, R. C. Budhani. 2012-08-16. Strain induced magnetic domain evolution and spin re-orientation transition in epitaxial manganite films. https://doi.org/10.1063/1.4734732

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