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Title: Structural investigations of Fe-Ga alloys by high-energy x-ray diffraction

Abstract

The magnetostriction of Fe-Ga alloys is significantly affected by the Ga content, which displays two positive peaks with increasing Ga concentration. This paper presents a systematic structural investigation of rapidly-cooled Fe-Ga alloys by the synchrotron-based high-energy x-ray diffraction. Ga-rich clusters are evidenced for the alloys beyond the first magnetostriction peak, which is identified by the anomalous peak broadening for the (200) fundamental reflection and a shrink of lattice parameter. The generation of Ga-rich clusters in A2 matrix results in the sudden decrease of magnetostriction after the first magnetostriction peak. In conclusion, these findings are important for designing high-performance Fe-Ga magnetostrictive alloys by structural tuning.

Authors:
ORCiD logo [1];  [1];  [1];  [2];  [1];  [1];  [1];  [1];  [3];  [2]
  1. Beijing Institute of Technology (China)
  2. University of Science and Technology Beijing (China)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Natural Science Foundation of China (NNSFC); Fundamental Research Funds for the Central Universities
OSTI Identifier:
1488545
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Alloys and Compounds
Additional Journal Information:
Journal Volume: 763; Journal Issue: C; Journal ID: ISSN 0925-8388
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Fe-Ga; crystal structure; high-energy x-ray diffraction; magnetostriction; superlattice

Citation Formats

Nie, Zhihua, Wang, Zilong, Liang, Yanbin, Cong, Daoyong, Li, Gaoqiang, Zhu, Cheng, Tan, Chengwen, Yu, Xiaodong, Ren, Yang, and Wang, Yandong. Structural investigations of Fe-Ga alloys by high-energy x-ray diffraction. United States: N. p., 2018. Web. doi:10.1016/j.jallcom.2018.05.327.
Nie, Zhihua, Wang, Zilong, Liang, Yanbin, Cong, Daoyong, Li, Gaoqiang, Zhu, Cheng, Tan, Chengwen, Yu, Xiaodong, Ren, Yang, & Wang, Yandong. Structural investigations of Fe-Ga alloys by high-energy x-ray diffraction. United States. doi:10.1016/j.jallcom.2018.05.327.
Nie, Zhihua, Wang, Zilong, Liang, Yanbin, Cong, Daoyong, Li, Gaoqiang, Zhu, Cheng, Tan, Chengwen, Yu, Xiaodong, Ren, Yang, and Wang, Yandong. Tue . "Structural investigations of Fe-Ga alloys by high-energy x-ray diffraction". United States. doi:10.1016/j.jallcom.2018.05.327. https://www.osti.gov/servlets/purl/1488545.
@article{osti_1488545,
title = {Structural investigations of Fe-Ga alloys by high-energy x-ray diffraction},
author = {Nie, Zhihua and Wang, Zilong and Liang, Yanbin and Cong, Daoyong and Li, Gaoqiang and Zhu, Cheng and Tan, Chengwen and Yu, Xiaodong and Ren, Yang and Wang, Yandong},
abstractNote = {The magnetostriction of Fe-Ga alloys is significantly affected by the Ga content, which displays two positive peaks with increasing Ga concentration. This paper presents a systematic structural investigation of rapidly-cooled Fe-Ga alloys by the synchrotron-based high-energy x-ray diffraction. Ga-rich clusters are evidenced for the alloys beyond the first magnetostriction peak, which is identified by the anomalous peak broadening for the (200) fundamental reflection and a shrink of lattice parameter. The generation of Ga-rich clusters in A2 matrix results in the sudden decrease of magnetostriction after the first magnetostriction peak. In conclusion, these findings are important for designing high-performance Fe-Ga magnetostrictive alloys by structural tuning.},
doi = {10.1016/j.jallcom.2018.05.327},
journal = {Journal of Alloys and Compounds},
number = C,
volume = 763,
place = {United States},
year = {2018},
month = {5}
}

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