Institutional Repository of Chinese Acad Sci, High Field Magnet Lab,Hefei 230031, Anhui, Peoples R China
Annealing assisted substrate coherency and high-temperature antiferromagnetic insulating transition in epitaxial La0.67Ca0.33MnO3/NdGaO3(001) films | |
Wang, L. F.1; Tan, X. L.; Chen, P. F.; Zhi, B. W.; Chen, B. B.; Huang, Z.; Gao, G. Y.; Wu, W. B. | |
2013-05-01 | |
发表期刊 | AIP ADVANCES |
摘要 | Bulk La0.67Ca0.33MnO3 (LCMO) and NdGaO3 (NGO) have the same Pbnm symmetry but different orthorhombic lattice distortions, yielding an anisotropic strain state in the LCMO epitaxial film grown on the NGO(001) substrate. The films are optimally doped in a ferromagnetic-metal ground state, after being ex-situ annealed in oxygen atmosphere, however, they show strikingly an antiferromagnetic-insulating (AFI) transition near 250 K, leading to a phase separation state with tunable phase instability at the temperatures below. To explain this drastic strain effect, the films with various thicknesses were ex-situ annealed under various annealing parameters. We demonstrate that the ex-situ annealing can surprisingly improve the epitaxial quality, resulting in the films with true substrate coherency and the AFI ground state. And the close linkage between the film morphology and electronic phase evolution implies that the strain-mediated octahedral deformation and rotation could be assisted by ex-situ annealing, and moreover, play a key role in controlling the properties of oxide heterostructures. (C) 2013 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. |
文章类型 | Article |
WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
DOI | 10.1063/1.4804541 |
关键词[WOS] | SRRUO3 THIN-FILMS ; PHYSICAL-PROPERTIES ; OXIDE HETEROSTRUCTURES ; STRAIN ; LA1-XCAXMNO3 ; MANGANITES ; INTERFACES ; GROWTH ; NDGAO3 |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Physics |
WOS类目 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
WOS记录号 | WOS:000320673600006 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/22195 |
专题 | 中科院强磁场科学中心 |
作者单位 | 1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China 2.Chinese Acad Sci, High Field Magnet Lab, Hefei 230026, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, L. F.,Tan, X. L.,Chen, P. F.,et al. Annealing assisted substrate coherency and high-temperature antiferromagnetic insulating transition in epitaxial La0.67Ca0.33MnO3/NdGaO3(001) films[J]. AIP ADVANCES,2013,3(5). |
APA | Wang, L. F..,Tan, X. L..,Chen, P. F..,Zhi, B. W..,Chen, B. B..,...&Wu, W. B..(2013).Annealing assisted substrate coherency and high-temperature antiferromagnetic insulating transition in epitaxial La0.67Ca0.33MnO3/NdGaO3(001) films.AIP ADVANCES,3(5). |
MLA | Wang, L. F.,et al."Annealing assisted substrate coherency and high-temperature antiferromagnetic insulating transition in epitaxial La0.67Ca0.33MnO3/NdGaO3(001) films".AIP ADVANCES 3.5(2013). |
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