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Temperature Dependence of Magnetization Reversal of Thin Manganite Film

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Uspenskaya L., Nurgaliev T., Miteva S.
Acta Physica Polonica A
|
2010
|
vol. 117
|
issue 1
207-210
EN
The magnetic domain structure, its transformation with temperature, and the magnetization reversal in 20 nm La_{0.7}Sr_{0.3}MnO_{3} film grown on LaAlO_{3} substrate by off-axis magnetron sputtering at 700°C and post-annealed at 600°C were studied in a wide temperature range. The magnetic domains with either in-plane- or out-of-plane-orientation of the vector of spontaneous magnetization were observed in the same film depending on the prehistory. The domains with the in-plane magnetization were found to be more stable. Magnetization reversal of the film was shown to occur via the nucleation and motion of 180-degree head-to-head domain walls, the number and the type of which were found to be dependent on temperature. Moreover, the transition between two magnetization reversal regimes was found at 30 K.
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