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^*

^*Corresponding author for this work

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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