Proceedings of the International Symposium on Mechanical Engineering and Material Science

The influence of oxygen pressure on the crystallographic structure and magnetic properties of BaM films on Al2O3(0001) substrate

Authors
Hui Zheng, Mangui Han, Peng Zheng, Liang Zheng, Jiangxia Deng, Huibin Qin
Corresponding Author
Hui Zheng
Available Online December 2016.
DOI
https://doi.org/10.2991/ismems-16.2016.13How to use a DOI?
Keywords
Hexagonal barium ferrite, Oxygen pressure, Pulsed laser deposition
Abstract

In this work, hexagonal barium ferrite thin films have been deposited on Al2O3(0001) substrates by pulsed laser deposition. The influence of oxygen pressure on the crystallographic structure and magnetic properties of BaM films has been studied. X-ray diffraction theta-2theta reveals the films have a good c-axis orientation perpendicular to the film plane under low oxygen pressure. It is also observed from scanning electron microscope that grain shape in the film surface is changed from platelets into elongated acicular with the increase of oxygen pressure. Magnetic hysteresis loops show the saturation magnetization and remanence of BaM films are greatly depended on the oxygen pressure. They are initially increased to a maximum value, then drastic decreased with increase of oxygen pressure. Consequently, films deposited at 0.08Pa have the highest saturation magnetization of 3900 Gs and remanence ratio of 74.5% which are comparable with the theoretical value of BaM bulk

Copyright
© 2016, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the International Symposium on Mechanical Engineering and Material Science
Series
Advances in Engineering Research
Publication Date
December 2016
ISBN
978-94-6252-277-0
ISSN
2352-5401
DOI
https://doi.org/10.2991/ismems-16.2016.13How to use a DOI?
Copyright
© 2016, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Hui Zheng
AU  - Mangui Han
AU  - Peng Zheng
AU  - Liang Zheng
AU  - Jiangxia Deng
AU  - Huibin Qin
PY  - 2016/12
DA  - 2016/12
TI  - The influence of oxygen pressure on the crystallographic structure and magnetic properties of BaM films on Al2O3(0001) substrate
BT  - Proceedings of the International Symposium on Mechanical Engineering and Material Science
PB  - Atlantis Press
SP  - 67
EP  - 72
SN  - 2352-5401
UR  - https://doi.org/10.2991/ismems-16.2016.13
DO  - https://doi.org/10.2991/ismems-16.2016.13
ID  - Zheng2016/12
ER  -