期刊
EPL
卷 84, 期 6, 页码 -出版社
EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
DOI: 10.1209/0295-5075/84/67016
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Structural, magnetic and terahertz emission properties of Bi(Fe1-xMnx)O-3 (0 <= x <= 0.5) thin films of various thicknesses were studied. A transition from coherently strained structure to relaxed structure at a film thickness (t) of similar to 80-90nm occurs only for x < 0.2. It is shown that terahertz-emission efficiency is not deteriorated with increasing Mn-doping (x). The magnetic moment of thin films (t <= 85 nm) exhibits only a weak enhancement with increasing x-a feature suggesting that Mn-doping is ineffective in inducing ferromagnetism in BiFeO3. The thicker films (t >= 150 nm), on the contrary, possess larger magnetic moment which evidently arises from the segregated magnetic MnFe2O4 phase. Copyright (C) EPLA, 2008
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