Magnetic proximity effect in La₀.7Ca₀.₃MnO₃/La₀.₉Ca₀.₁MnO₃ multilayered film with diffusive interfaces

• Дата: 2008
• Автори: Prokhorov, V.G., Kaminsky, G.G., Lee, Y.P., Park, S.Y., Hyun, Y.H., Park, J.S., Svetchnikov, V.L.
• Формат: Стаття
• Мова: English
• Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2008
• Назва видання: Физика низких температур
• Теми: Низкотемпеpатуpный магнетизм
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/117476
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Magnetic proximity effect in La₀.7Ca₀.₃MnO₃/La₀.₉Ca₀.₁MnO₃ multilayered film with diffusive interfaces / V.G. Prokhorov, G.G. Kaminsky, Y.P. Lee, S.Y. Park, Y.H. Hyun, J.S. Park, V.L. Svetchnikov // Физика низких температур. — 2008. — Т. 34, № 9. — С. 942–946. — Бібліогр.: 19 назв. — англ.

The structural, the magnetic and the transport properties of La₀.7Ca₀.₃MnO₃/La₀.₉Ca₀.₁MnO₃ multilayer film, prepared by rf-magnetron sputtering, have been investigated. The high-resolution electron-microscopy studies reveal the formation of different crystal structures in the constituent sublayers, but without sharp and well-defined interfaces. At the same time, the small regions of double-period modulated phase exist in the La₀.₉Ca₀.₁MnO₃ sublayers at room temperature, manifesting the formation of charge-ordered antiferromagnetic state. The magnetic measurements reveal a significant enhancement of the ferromagnetic ordering in the La₀.₉Ca₀.₁MnO₃ layers due to a strong magnetic coupling between the constituent sublayers. The multilayer film shows the anisotropic saturation magnetization at low temperature and the alternating shape of the temperature-dependent anisotropic magnetoresistance near the metal–insulator transition.