Self-generated in-plane superlattice in relaxed epitaxial La0.67Sr0.33MnO3 films
Self-generated in-plane superlattice in relaxed epitaxial La0.67Sr0.33MnO3 films
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松弛外延 La0.67Sr0.33MnO3 薄膜中自生面内超晶格
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
Wenxuan Wu
中科院分区：
文献类型：
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作者：
T. Zhou;G. Li;Xiyu Li;Shaowei Jin;Wenxuan Wu
通过 X 射线衍射研究了 (LaAlO3)0.3(Sr2AlTaO6)0.7 (001) [LSAT (001)] 衬底上外延 La0.67Sr0.33MnO3 (LSMO) 薄膜的应变弛豫及其对面内超晶格形成的影响，作为薄膜厚度的函数。围绕(002)和(103)反射的摇摆曲线和倒易空间映射表明，厚度超过27nm的薄膜几乎完全松弛，并且具有调制的超晶格结构。菱面体 LSMO 在立方 LSAT 上生长所引入的剪切应变松弛导致 LSMO 赝立方角的恢复被认为是超晶格结构的起源。
The strain relaxation and its effect on the in-plane superlattice formation of epitaxial La0.67Sr0.33MnO3 (LSMO) thin films on the (LaAlO3)0.3(Sr2AlTaO6)0.7 (001) [LSAT (001)] substrates were investigated as a function of film thickness by x-ray diffraction. Rocking curves and reciprocal space mappings around (002) and (103) reflections reveal that the film with a thickness above 27nm is almost fully relaxed and has a modulated superlattice structure. The recovery of the pseudocubic angle of LSMO resulting from the relaxation of the shear strain introduced by the growth of rhombohedral LSMO on cubic LSAT was suggested to be the origin of the superlattice structure.
影响因子：
3.2
作者：
N. Farag;M. Bobeth;W. Pompe;A. Romanov;J. Speck
通讯作者：
N. Farag;M. Bobeth;W. Pompe;A. Romanov;J. Speck