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Title: Thermal Expansion and Magnetostriction of Laves-Phase Alloys: Fingerprints of Ferrimagnetic Phase Transitions

Abstract

The magneto–elastic coupling effect correlates to the changes of moment and lattice upon magnetic phase transition. Here, we report that, in the pseudo-binary Laves-phase Tb1-xDyxCo2 system (x = 0.0, 0.7, and 1.0), thermal expansion and magnetostriction can probe the ferrimagnetic transitions from cubic to rhombohedral phase (in TbCo2), from cubic to tetragonal phase (in DyCo2), and from cubic to rhombohedral then to tetragonal phase (in Tb0.3Dy0.7Co2). Furthermore, a Landau polynomial approach is employed to qualitatively investigate the thermal expansion upon the paramagnetic (cubic) to ferrimagnetic (rhombohedral or tetragonal) transition, and the calculated thermal expansion curves agree with the experimental curves. Our work illustrates the correlation between crystal symmetry, magnetostriction, and thermal expansion in ferrimagnetic Laves-phase alloys and provides a new perspective to investigate ferrimagnetic transitions.

Authors:
 [1];  [1]; ORCiD logo [2];  [1];  [3];  [1];  [1];  [1];  [1];  [1];  [4];  [5]
  1. Xi’an Jiaotong Univ. (China)
  2. National Inst. for Materials Science (NIMS), Hyogo (Japan)
  3. Univ. of Melbourne (Australia)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
  5. National Inst. for Materials Science (NIMS), Tsukuba (Japan)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; National Natural Science Foundation of China (NSFC)
OSTI Identifier:
1578039
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Materials
Additional Journal Information:
Journal Volume: 12; Journal Issue: 11; Journal ID: ISSN 1996-1944
Publisher:
MDPI
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Laves-phase alloy; ferrimagnetic transition; magnetostriction; thermal expansion

Citation Formats

Zhou, Chao, Bao, Huixin, Matsushita, Yoshitaka, Chang, Tieyan, Chen, Kaiyun, Zhang, Yin, Tian, Fanghua, Zuo, Wenliang, Song, Xiaoping, Yang, Sen, Ren, Yang, and Ren, Xiaobing. Thermal Expansion and Magnetostriction of Laves-Phase Alloys: Fingerprints of Ferrimagnetic Phase Transitions. United States: N. p., 2019. Web. doi:10.3390/ma12111755.
Zhou, Chao, Bao, Huixin, Matsushita, Yoshitaka, Chang, Tieyan, Chen, Kaiyun, Zhang, Yin, Tian, Fanghua, Zuo, Wenliang, Song, Xiaoping, Yang, Sen, Ren, Yang, & Ren, Xiaobing. Thermal Expansion and Magnetostriction of Laves-Phase Alloys: Fingerprints of Ferrimagnetic Phase Transitions. United States. https://doi.org/10.3390/ma12111755
Zhou, Chao, Bao, Huixin, Matsushita, Yoshitaka, Chang, Tieyan, Chen, Kaiyun, Zhang, Yin, Tian, Fanghua, Zuo, Wenliang, Song, Xiaoping, Yang, Sen, Ren, Yang, and Ren, Xiaobing. Thu . "Thermal Expansion and Magnetostriction of Laves-Phase Alloys: Fingerprints of Ferrimagnetic Phase Transitions". United States. https://doi.org/10.3390/ma12111755. https://www.osti.gov/servlets/purl/1578039.
@article{osti_1578039,
title = {Thermal Expansion and Magnetostriction of Laves-Phase Alloys: Fingerprints of Ferrimagnetic Phase Transitions},
author = {Zhou, Chao and Bao, Huixin and Matsushita, Yoshitaka and Chang, Tieyan and Chen, Kaiyun and Zhang, Yin and Tian, Fanghua and Zuo, Wenliang and Song, Xiaoping and Yang, Sen and Ren, Yang and Ren, Xiaobing},
abstractNote = {The magneto–elastic coupling effect correlates to the changes of moment and lattice upon magnetic phase transition. Here, we report that, in the pseudo-binary Laves-phase Tb1-xDyxCo2 system (x = 0.0, 0.7, and 1.0), thermal expansion and magnetostriction can probe the ferrimagnetic transitions from cubic to rhombohedral phase (in TbCo2), from cubic to tetragonal phase (in DyCo2), and from cubic to rhombohedral then to tetragonal phase (in Tb0.3Dy0.7Co2). Furthermore, a Landau polynomial approach is employed to qualitatively investigate the thermal expansion upon the paramagnetic (cubic) to ferrimagnetic (rhombohedral or tetragonal) transition, and the calculated thermal expansion curves agree with the experimental curves. Our work illustrates the correlation between crystal symmetry, magnetostriction, and thermal expansion in ferrimagnetic Laves-phase alloys and provides a new perspective to investigate ferrimagnetic transitions.},
doi = {10.3390/ma12111755},
journal = {Materials},
number = 11,
volume = 12,
place = {United States},
year = {Thu May 30 00:00:00 EDT 2019},
month = {Thu May 30 00:00:00 EDT 2019}
}

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