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Zhipeng Li, Michel Bosman, Zhen Yang, Peng Ren, Lan Wang, Liang Cao, Xiaojiang Yu, Chang Ke, Mark B. H. Breese, Andrivo Rusydi, Weiguang Zhu, Zhili Dong and Yong Lim Foo Interface and Surface Cation Stoichiometry Modified by Oxygen Vacancies in Epitaxial Manganite Films Advanced Functional Materials 22

Article first published online: 15 JUN 2012 | DOI: 10.1002/adfm.201200143

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During film growth, oxygen vacancies modify the cation stoichiometry in pulsed laser deposited La0.8Sr0.2MnO3 films. Mn is partially substituted by La/Sr cations near strained interfaces, leading to a gradient in the Mn nominal valence along the film growth direction. Without elimination of oxygen vacancies during growth, anomalous magnetic properties will prevent the controlled fabrication of spintronic devices.

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