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异质界面调控超薄PbTiO_3薄膜四方性的研究
Alternative TitleStudy of tetragonality in ultrathin PbTiO_3 films driven by heterointerface
张思瑞; 唐云龙; 朱银莲; 李爽; 马秀良
2018
Source Publication电子显微学报
ISSN1000-6281
Volume37.0Issue:004Pages:321-325
Abstract本文利用球差校正透射电子显微镜研究了异质界面结构对PbTiO_3/La_(0.7)Sr_(0.3)MnO_3/NdGaO_3(110)_O以及PbTiO_3/NdGaO_3(110)_O超薄薄膜体系中铁电PbTiO_3层四方性的影响。结果表明,在NdGaO_3(110)_O衬底上生长的具有化学价态不连续异质界面(La_(0.7)Sr_(0.3)MnO_3/PbTiO_3)的PbTiO_3薄膜体系中四方性比直接在NdGaO_3(110)_O衬底上生长超薄PbTiO_3薄膜的四方性明显增强,XPS谱分析显示出界面Mn元素价态发生了变价,探讨了界面处化学价态的变化对薄膜四方性的影响。
Other AbstractAberration-corrected scanning transmission electron microscopy was applied to investigate two different film systems. It is found that when ultrathin PbTiO_3 films grow on the NdGaO_3 substrate buffered with La_(0. 7)Sr_(0. 3)MnO_3 electrode,the tetragonality is improved compared with PbTiO_3 films grown on NdGaO_3 substrates directly. It is owing to the accumulation of oxygen vacancies at the heterointerface between La_(0. 7)Sr_(0. 3)MnO_3 and PbTiO_3,induced by charge transfer of Mn valence reduction as evidenced by XPS analysis.The results may facilitate the development of nanoscale ferroelectric materials.
Keyword铁电薄膜 异质界面 四方性提高 球差校正透射电子显微镜
Indexed ByCSCD
Language中文
CSCD IDCSCD:6306454
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/149006
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
张思瑞,唐云龙,朱银莲,等. 异质界面调控超薄PbTiO_3薄膜四方性的研究[J]. 电子显微学报,2018,37.0(004):321-325.
APA 张思瑞,唐云龙,朱银莲,李爽,&马秀良.(2018).异质界面调控超薄PbTiO_3薄膜四方性的研究.电子显微学报,37.0(004),321-325.
MLA 张思瑞,et al."异质界面调控超薄PbTiO_3薄膜四方性的研究".电子显微学报 37.0.004(2018):321-325.
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