Microstructural characteristics of La0.7Ca0.3MnO3 films and multilayers

被引：0
|
作者：
Wang, MG [1 ]
Li, DX
He, LL
Ye, HQ
Xiong, GC
机构：
[1] Chinese Acad Sci, Inst Met Res, Atom Imaging Solids Lab, Shenyang 110015, Peoples R China
[2] Peking Univ, Dept Phys, Beijing 100871, Peoples R China
[3] Peking Univ, Mesoscop Phys Natl Lab, Beijing 100871, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2000年 / 16卷 / 06期
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D O I：
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中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
La0.7Ca0.3MnO3 (LCMO) films and La0.7Ca0.3MnO3/Gd0.7Ca0.3MnO3 (LCMO/GCMO) multilayers have been prepared by pulsed laser deposition. The microstructures of both systems were investigated by transmission electron microscopy (TEM). The main structure of the films and the multilayers was monoclinic with a unit cell of size 2a(p) x root 2a(p) x root 2a(p), where a(p) is the lattice constant of single perovskite crystal. The LCMO films were composed of three-dimension multitwinning domains, while the LCMO/GCMO multilayers showed two-domain structure. In LCMO/GCMO multilayers, LCMO layers were coherent with GCMO layers and the interfaces between LCMO and GCMO layers were free from mismatch dislocation, which resulted in highly strained multilayerd structures.
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页码：601 / 604
页数：4
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