Epitaxial growth of metastable La0.67Sr0.33MnO3-δ films by using Sr3Al2O6 as multifunctional buffer layers

被引：4

作者：

Fang, Yanhan ^{[1
,2
]}

Sun, Wenjie ^{[1
,2
]}

Han, Lu ^{[1
,2
]}

Li, Zeya ^{[1
,2
]}

Sun, Haoying ^{[1
,2
]}

Yuan, Hongtao ^{[1
,2
]}

Gu, Zhengbin ^{[1
,2
]}

Nie, Yuefeng ^{[1
,2
]}

机构：

[1] Natl Lab Solid State Microstruct, Coll Engn & Appl Sci, Nanjing 210093, Peoples R China

[2] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A | 2022年 / 40卷 / 01期

基金：

中国国家自然科学基金;

关键词：

PHASE-TRANSFORMATION; STRAIN STATES; BROWNMILLERITE; TRANSITION;

D O I：

10.1116/6.0001428

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In doped manganites, a substantial tuning of the magnetic and electrical transport properties can be realized by engineering the concentration of oxygen vacancies. To date, most oxygen-deficient La1-xSrxMnO3-delta (0 & LE; x & LE; 1) films are synthesized by after-growth treatments. However, the direct growth of La1-xSrxMnO3-delta films remains challenging due to the metastability of this material. Here, we report the epitaxial growth of high quality single crystalline La0.67Sr0.33MnO3-delta films with an extremely large out-of-plane lattice parameter of 4.26 & ANGS; by reactive oxide molecular beam epitaxy. To stabilize this metastable phase, Sr3Al2O6 buffer layers are used to block the oxygen diffusion from the SrTiO3 substrate to the film during the growth process. This work provides an efficient way to obtain metastable La0.67Sr0.33MnO3-delta films.

引用

页数：9

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