Prokhorov V. G. Magnetic proximity effect in Pr0,5Ca0,5MnO3/0,7Sr0,3MnO3 bilayered films / V. G. Prokhorov, G. G. Kaminsky, V. S. Flis, J. M. Kim, T. W. Eom, J. S. Park, Y. P. Lee, V. L. Svetchnikov // Физика низ. температур. - 2012. - 38, № 1. - С. 52-61. - Библиогр.: 44 назв. - англ.The magnetotransport properties of Pr0,5Ca0,5MnO3/La0,7Sr0,3MnO3 bilayer, and Pr0,5Ca0,5MnO3 and La0,7Sr0,3MnO3 films, deposited on LaAlO3 (001) substrate by pulse laser deposition have been investigated. The x-ray diffraction and high-resolution electron-microscopy analysis reveals that lattice parameters for the constituent sublayers in the bilayer are very close to that for the individual films. It was found that a ferromagnetic transition in the La0,7Sr0,3MnO3 sublayer significantly modifies the magnetotransport properties of the Pr0,5Ca0,5MnO3 constituent sublayer, owing to occurrence of a magnetic proximity effect. The main evidences for this effect are an appearance of the exchange bias interaction between the constituent sublayers; a localized-to-itinerant crossover in the system of polarized electrons, which results in formation of the Griffiths-like ferromagnetic state; and an unusual polaron transport of carriers. The experimental results have been analyzed within the framework of modern theoretical approaches. Індекс рубрикатора НБУВ: В379.273
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Шифр НБУВ: Ж14063 Пошук видання у каталогах НБУВ
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