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−δ (0 ≤ x ≤ 1) films are synthesized by after-growth treatments. However, the direct growth of La1−xSrxMnO3−δ films remains challenging due to the metastability of this material. Here, we report the epitaxial growth of high quality single crystalline La0.67Sr0.33MnO3−δ films with an extremely large out-of-plane lattice parameter of 4.26 Å 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−δ films.
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January 2022
Research Article|
December 28 2021
Epitaxial growth of metastable La0.67Sr0.33MnO3−δ films by using Sr3Al2O6 as multifunctional buffer layers
Yanhan Fang;
Yanhan Fang
1
National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences
, Nanjing 210093, People's Republic of China
2
Collaborative Innovation Center of Advanced Microstructures, Nanjing University
, Nanjing 210093, People's Republic of China
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Wenjie Sun;
Wenjie Sun
1
National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences
, Nanjing 210093, People's Republic of China
2
Collaborative Innovation Center of Advanced Microstructures, Nanjing University
, Nanjing 210093, People's Republic of China
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Lu Han;
Lu Han
1
National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences
, Nanjing 210093, People's Republic of China
2
Collaborative Innovation Center of Advanced Microstructures, Nanjing University
, Nanjing 210093, People's Republic of China
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Zeya Li;
Zeya Li
1
National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences
, Nanjing 210093, People's Republic of China
2
Collaborative Innovation Center of Advanced Microstructures, Nanjing University
, Nanjing 210093, People's Republic of China
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Haoying Sun;
Haoying Sun
1
National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences
, Nanjing 210093, People's Republic of China
2
Collaborative Innovation Center of Advanced Microstructures, Nanjing University
, Nanjing 210093, People's Republic of China
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Hongtao Yuan
;
Hongtao Yuan
1
National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences
, Nanjing 210093, People's Republic of China
2
Collaborative Innovation Center of Advanced Microstructures, Nanjing University
, Nanjing 210093, People's Republic of China
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Zhengbin Gu;
Zhengbin Gu
1
National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences
, Nanjing 210093, People's Republic of China
2
Collaborative Innovation Center of Advanced Microstructures, Nanjing University
, Nanjing 210093, People's Republic of China
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Yuefeng Nie
Yuefeng Nie
a)
1
National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences
, Nanjing 210093, People's Republic of China
2
Collaborative Innovation Center of Advanced Microstructures, Nanjing University
, Nanjing 210093, People's Republic of China
a)Author to whom correspondence should be addressed: ynie@nju.edu.cn
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a)Author to whom correspondence should be addressed: ynie@nju.edu.cn
Note: This paper is a part of the Special Collection Honoring Dr. Scott Chambers' 70th Birthday and His Leadership in the Science and Technology of Oxide Thin Films.
J. Vac. Sci. Technol. A 40, 013413 (2022)
Article history
Received:
September 06 2021
Accepted:
December 03 2021
Citation
Yanhan Fang, Wenjie Sun, Lu Han, Zeya Li, Haoying Sun, Hongtao Yuan, Zhengbin Gu, Yuefeng Nie; Epitaxial growth of metastable La0.67Sr0.33MnO3−δ films by using Sr3Al2O6 as multifunctional buffer layers. J. Vac. Sci. Technol. A 1 January 2022; 40 (1): 013413. https://doi.org/10.1116/6.0001428
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