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Element-specific depth profile of magnetism and stoichiometry at the La 0.67 Sr 0.33 MnO 3 / BiFeO 3 interfaceстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Bertinshaw J., Brück S., Lott D., Fritzsche H., Khaydukov Y., Soltwedel O., Keller T., Goering E., Audehm P., Cortie D.L.
- Журнал: Physical Review B
- Том: 90
- Номер: 4
- Год издания: 2014
- Издательство: American Physical Society
- Местоположение издательства: United States
- DOI: 10.1103/physrevb.90.041113
- Аннотация: Depth-sensitive magnetic, structural, and chemical characterization is important in the understanding and optimization of physical phenomena emerging at the interfaces of transition metal oxide heterostructures. In a simultaneous approach we have used polarized neutron and resonant x-ray reflectometry to determine themagnetic profile across atomically sharp interfaces of ferromagnetic La0.67Sr0.33MnO3/multiferroic BiFeO3 bilayers with subnanometer resolution. In particular, the x-ray resonant magnetic reflectivity measurements at the Fe and Mn resonance edges allowed us to determine the element-specific depth profile of the ferromagnetic moments in both the La0.67Sr0.33MnO3 and BiFeO3 layers. Our measurements indicate a magnetically diluted interface layer within the La0.67Sr0.33MnO3 layer, in contrast to previous observations on inversely deposited layers [P. Yu et al., Phys. Rev. Lett. 105, 027201 (2010)]. Additional resonant x-ray reflection measurements indicate a region of altered Mn and O content at the interface, with a thickness matching that of the magnetic diluted layer, as the origin of the reduction of the magnetic moment.
- Добавил в систему: Хайдуков Юрий Николаевич