Proceedings of the 2015 International Conference on Material Science and Applications

Ab-initio Calculation of Structural and Magnetic Properties of Annealed Cu2MnAl Heusler Alloy

Authors
Hang Shi, Xin Wang, Nan Zhang
Corresponding Author
Hang Shi
Available Online June 2014.
DOI
https://doi.org/10.2991/icmsa-15.2015.75How to use a DOI?
Keywords
Heusler Alloy, Ab-initio Calculation, Annealing.
Abstract
Heusler alloys attracted considerable interest for their versatile magnetic properties. In this paper, Cu2MnAl Heusler Alloy samples were prepared with high vacuum melting furnace under the atmosphere of pure Argon. Then the samples were crushed and milled by planetary miller to get a uniform grading about 2 to 3 um thick. The milled powders were annealed under a mixed controlled atmosphere of pure Hydrogen and pure Nitrogen at different temperatures. The treated powders were characterized by X-ray diffraction (XRD) and vibrating sample magnetometer (VSM). The structural property of Cu2MnAl was calculated by ab-initio method. Different types of refined structures of Cu2MnAl with different element occupation ratios and different occupation sites were calculated and the XRD patterns of the corresponding structures were concluded. With the calculated results, the property of the annealed powers of Cu2MnAl was demonstrated. The Cu2MnAl achieved its maximum saturation magnetization (Ms) of 72emu/g and minimum coercive (Hc) at 200 annealing temperature with L21 ordered structure. Other phases like Al2Mn3 and Cu9Al4 were formed when annealed above 300 , and the Ms of the material drops between 200 and 400 or above 700 but rises between 400 and 700 with its crystallization increased.
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Proceedings
2015 International Conference on Material Science and Applications (icmsa-15)
Part of series
Advances in Physics Research
Publication Date
June 2014
ISBN
978-94-62520-75-2
ISSN
2352-541X
DOI
https://doi.org/10.2991/icmsa-15.2015.75How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Hang Shi
AU  - Xin Wang
AU  - Nan Zhang
PY  - 2014/06
DA  - 2014/06
TI  - Ab-initio Calculation of Structural and Magnetic Properties of Annealed Cu2MnAl Heusler Alloy
BT  - 2015 International Conference on Material Science and Applications (icmsa-15)
PB  - Atlantis Press
SP  - 416
EP  - 421
SN  - 2352-541X
UR  - https://doi.org/10.2991/icmsa-15.2015.75
DO  - https://doi.org/10.2991/icmsa-15.2015.75
ID  - Shi2014/06
ER  -