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2-2型Pb(Zr_(0.52)Ti_(0.48))O_3/CoFe_2O_4多铁纳米复合薄膜中磁场诱发铁电层准同型相变行为研究 被引量:1

Morphotropic Phase Transition of Ferroelectric Layer in 2-2 Type Pb(Zr_(0.52)Ti_(0.48))O_3/CoFe_2O_4 Multiferroic Thin Film Induced by Magnetic Field
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摘要 采用溶胶—凝胶工艺制备了2-2型Pb(Zr0.52Ti0.48)O3/CoFe2O4多铁复合薄膜.通过X射线ω扫描发现,复合薄膜中Pb(Zr0.52Ti0.48)O3层均具有高度(100)择优取向,当复合薄膜中CoFe2O4层达到400 nm厚时,在外加磁场作用下,薄膜中Pb(Zr0.52Ti0.48)O3铁电层会发生四方相到单斜相的相变,相变的发生意味着铁电层自发极化方向的改变,这会诱发2-2型复合薄膜巨大磁电耦合效应. 2-2 type Pb (Zro.52Tio.48)O3/CoFe204 multiferroic thin films with different thickness CoFe204 layer are fabricated by sol-gel technology. Through XRD co-scan characterization, it has been confirmed that the Pb(Zro.s2Tio.48) 03 layer in multiferroic thin films exhibits (100) texture. For the thin film with 400 nm CoFe204 layer, tetragonal- monoelinic phase transition of Pb(Zro.s2Tio.4s)O3 layer has been induced by the magnetostriction of the CoFe204 layer under 3 500 Oe magnetic field. The phase transition indicates the variation of spontaneous polarization in ferroelectric layer. Giant magneto-electric eoupling of 2-2 type multiferroic thin film will be resulted from the phase transition of Pb (Zro.52Tio.4s) O3 layer.
出处 《吉林师范大学学报(自然科学版)》 2011年第3期20-23,共4页 Journal of Jilin Normal University:Natural Science Edition
基金 国家自然科学基金项目(51002018)
关键词 多铁薄膜 磁电耦合效应 准同型相变 磁致伸缩 织构 muhiferroic thin film magneto-electric coupling morphotropic phase transition magnetostriction texture
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同被引文献26

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