Substrate-effect on the magnetic microstructure of La$_{0.7}$Sr$_{0.3}$MnO$_{3}$ thin films studied by magnetic force microscopy

Preprint

27 February 2001

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0102496

Abstract

Colossal magnetoresistive (CMR) La$_{0.7}$Sr$_{0.3}$MnO$_{3}$ (LSMO) thin films have been grown under tensile strains on (100)-SrTiO$_{3}$ substrates and compressive strains on (100)-LaAlO$_{3}$ and (110)-NdGaO$_{3}$ substrates by pulsed laser deposition. Using magnetic force microscopy (MFM), a "feather-like" magnetic pattern, characteristic of films with an in-plane magnetization, is observed for films deposited on both SrTiO$_{3}$ and NdGaO$_{3}$ while a "bubble" magnetic pattern, typical of films with an out-of plane magnetization, is recorded for LaAlO$_{3}$. We show that the shape of the magnetic pattern imaged by MFM is fully correlated to the easy direction of the magnetization in the film.

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Version 1, 2001-02-27, ArXiv
Published version: Applied Physics Letters, 78 (23), 3681.

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