Specific cation stoichiometry control of SrMnO3-δ thin films via RHEED oscillations

Qingqing Liu; Qilan Zhong; Jiawei Bai; Jing Yang; Rong Huang; Wei Bai; Yuanyuan Zhang; Chun Gang Duan; Xiaodong Tang

doi:10.1063/5.0048085

Specific cation stoichiometry control of SrMnO_3-δ thin films via RHEED oscillations

Qingqing Liu, Qilan Zhong, Jiawei Bai, Jing Yang, Rong Huang, Wei Bai, Yuanyuan Zhang, Chun Gang Duan, Xiaodong Tang

School of Physics and Electronic Science

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Cubic heteroepitaxial (001) SrMnO_3-δ (SMO) films were grown on SrTiO₃ substrates by atomic alternating layer molecular beam epitaxy. Precise control of cation stoichiometry was achieved by in situ reflection high-energy electron diffraction (RHEED) oscillation. During SMO film growth, a correlation between RHEED oscillation features and the cation stoichiometry/monolayer dose was established. In non-stoichiometric films, there were out-of-plane lattice expansions due to off-stoichiometry-dependent defects, including Ruddlesden-Popper SrO planar faults in Sr-rich films and Sr vacancy defect clusters in Mn-rich films.

Original language	English
Article number	232903
Journal	Applied Physics Letters
Volume	118
Issue number	23
DOIs	https://doi.org/10.1063/5.0048085
State	Published - 7 Jun 2021

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title = "Specific cation stoichiometry control of SrMnO3-δ thin films via RHEED oscillations",

abstract = "Cubic heteroepitaxial (001) SrMnO3-δ (SMO) films were grown on SrTiO3 substrates by atomic alternating layer molecular beam epitaxy. Precise control of cation stoichiometry was achieved by in situ reflection high-energy electron diffraction (RHEED) oscillation. During SMO film growth, a correlation between RHEED oscillation features and the cation stoichiometry/monolayer dose was established. In non-stoichiometric films, there were out-of-plane lattice expansions due to off-stoichiometry-dependent defects, including Ruddlesden-Popper SrO planar faults in Sr-rich films and Sr vacancy defect clusters in Mn-rich films.",

author = "Qingqing Liu and Qilan Zhong and Jiawei Bai and Jing Yang and Rong Huang and Wei Bai and Yuanyuan Zhang and Duan, \{Chun Gang\} and Xiaodong Tang",

note = "Publisher Copyright: {\textcopyright} 2021 Author(s).",

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doi = "10.1063/5.0048085",

language = "英语",

volume = "118",

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TY - JOUR

T1 - Specific cation stoichiometry control of SrMnO3-δ thin films via RHEED oscillations

AU - Liu, Qingqing

AU - Zhong, Qilan

AU - Bai, Jiawei

AU - Yang, Jing

AU - Huang, Rong

AU - Bai, Wei

AU - Zhang, Yuanyuan

AU - Duan, Chun Gang

AU - Tang, Xiaodong

PY - 2021/6/7

Y1 - 2021/6/7

N2 - Cubic heteroepitaxial (001) SrMnO3-δ (SMO) films were grown on SrTiO3 substrates by atomic alternating layer molecular beam epitaxy. Precise control of cation stoichiometry was achieved by in situ reflection high-energy electron diffraction (RHEED) oscillation. During SMO film growth, a correlation between RHEED oscillation features and the cation stoichiometry/monolayer dose was established. In non-stoichiometric films, there were out-of-plane lattice expansions due to off-stoichiometry-dependent defects, including Ruddlesden-Popper SrO planar faults in Sr-rich films and Sr vacancy defect clusters in Mn-rich films.

AB - Cubic heteroepitaxial (001) SrMnO3-δ (SMO) films were grown on SrTiO3 substrates by atomic alternating layer molecular beam epitaxy. Precise control of cation stoichiometry was achieved by in situ reflection high-energy electron diffraction (RHEED) oscillation. During SMO film growth, a correlation between RHEED oscillation features and the cation stoichiometry/monolayer dose was established. In non-stoichiometric films, there were out-of-plane lattice expansions due to off-stoichiometry-dependent defects, including Ruddlesden-Popper SrO planar faults in Sr-rich films and Sr vacancy defect clusters in Mn-rich films.

UR - https://www.scopus.com/pages/publications/85107774146

U2 - 10.1063/5.0048085

DO - 10.1063/5.0048085

M3 - 文章

AN - SCOPUS:85107774146

SN - 0003-6951

VL - 118

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 23

M1 - 232903

ER -

Specific cation stoichiometry control of SrMnO_3-δ thin films via RHEED oscillations

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