Abnormal lattice expansion and double periodicity in La0.7Sr0.3MnO3 thin films under electron irradiation

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	Abnormal lattice expansion and double periodicity in La0.7Sr0.3MnO3 thin films under electron irradiation
	M. Zhang; X. L. Ma; D. X. Li; H. B. Lu; Z. H. Chen; G. Z. Yang
	2005
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	20 期号:7 页码:1778-1784
摘要	Perovskite-based SrNb0.2Ti0.8O3/La0.7Sr0.3MnO3 bilayer films were grown on (001) SrTiO3 substrate. By means of in situ transmission electron microscopy, lattice expansion and double periodicity were identified in both plan-view and cross-section La0.7Sr0.3MnO3 films under electron irradiation for 25 s. After the electron beam was removed from specimens, the original perovskite structure recovered within 10 min. However, when irradiation time was more than 1 min, the original perovskite structure could not recover, and became an amorphous phase or a cavity created by irradiation. According to first-principle calculation and electron diffraction pattern simulation, formation mechanism of the lattice expansion and double periodicity is proposed based on oxygen deficiency during electron irradiation.
部门归属	chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china. chinese acad sci, lab opt phys, inst phys, beijing 100080, peoples r china. chinese acad sci, ctr condensed matter phys, beijing 100080, peoples r china.;ma, xl (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china;xlma@imr.ac.cn
关键词	Perovskite-type Oxides Molecular-dynamics Fuel-cells Magnetoresistance
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WOS记录号	WOS:000230296100016
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35220
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. Zhang,X. L. Ma,D. X. Li,et al. Abnormal lattice expansion and double periodicity in La0.7Sr0.3MnO3 thin films under electron irradiation[J]. Journal of Materials Research,2005,20(7):1778-1784.
APA	M. Zhang,X. L. Ma,D. X. Li,H. B. Lu,Z. H. Chen,&G. Z. Yang.(2005).Abnormal lattice expansion and double periodicity in La0.7Sr0.3MnO3 thin films under electron irradiation.Journal of Materials Research,20(7),1778-1784.
MLA	M. Zhang,et al."Abnormal lattice expansion and double periodicity in La0.7Sr0.3MnO3 thin films under electron irradiation".Journal of Materials Research 20.7(2005):1778-1784.