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Title: Anomalous magnetoelastic behaviour near morphotropic phase boundary in ferromagnetic Tb 1-xNd xCo 2 system

Abstract

In this study, we report a morphotropic phase boundary (MPB) involved ferromagnetic system Tb 1-xNd xCo 2 and reveal the corresponding structural and magnetoelastic properties of this system. With high resolution synchrotron X-ray diffractometry, the crystal structure of the TbCo 2-rich side is detected to be rhombohedral and that of NdCo 2-rich side is tetragonal below their respective Curie temperatures TC. The MPB composition Tb 0.35Nd 0.65Co 2 corresponds to the coexistence of the rhombohedral phase (R-phase) and tetragonal phase ( T-phase). Contrary to previously reported MPB involved ferromagnetic systems, the MPB composition of Tb 0.35Nd 0.65Co 2 shows minimum magnetization which can be understood as compensation of sublattice moments between the R-phase and the T-phase. Furthermore, magnetostriction of Tb 1-xNd xCo 2 decreases with increasing Nd concentration until x = 0.8 and then increases in the negative direction with further increasing Nd concentration; the optimum point for magnetoelastic properties lies towards the rhombohedral phase. Finally, our work not only shows an anomalous type of ferromagnetic MPB but also provides an effective way to design functional materials.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [2]
  1. Xi'an Jiaotong Univ., Xi'an (China)
  2. 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), Scientific User Facilities Division; National Natural Science Foundation of China (NNSFC); National Basic Research Program of China
OSTI Identifier:
1373406
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 109; Journal Issue: 5; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Murtaza, Adil, Yang, Sen, Zhou, Chao, Chang, Tieyan, Chen, Kaiyun, Tian, Fanghua, Song, Xiaoping, Suchomel, Matthrew R., and Ren, Y. Anomalous magnetoelastic behaviour near morphotropic phase boundary in ferromagnetic Tb1-xNdxCo2 system. United States: N. p., 2016. Web. doi:10.1063/1.4960462.
Murtaza, Adil, Yang, Sen, Zhou, Chao, Chang, Tieyan, Chen, Kaiyun, Tian, Fanghua, Song, Xiaoping, Suchomel, Matthrew R., & Ren, Y. Anomalous magnetoelastic behaviour near morphotropic phase boundary in ferromagnetic Tb1-xNdxCo2 system. United States. doi:10.1063/1.4960462.
Murtaza, Adil, Yang, Sen, Zhou, Chao, Chang, Tieyan, Chen, Kaiyun, Tian, Fanghua, Song, Xiaoping, Suchomel, Matthrew R., and Ren, Y. Thu . "Anomalous magnetoelastic behaviour near morphotropic phase boundary in ferromagnetic Tb1-xNdxCo2 system". United States. doi:10.1063/1.4960462. https://www.osti.gov/servlets/purl/1373406.
@article{osti_1373406,
title = {Anomalous magnetoelastic behaviour near morphotropic phase boundary in ferromagnetic Tb1-xNdxCo2 system},
author = {Murtaza, Adil and Yang, Sen and Zhou, Chao and Chang, Tieyan and Chen, Kaiyun and Tian, Fanghua and Song, Xiaoping and Suchomel, Matthrew R. and Ren, Y.},
abstractNote = {In this study, we report a morphotropic phase boundary (MPB) involved ferromagnetic system Tb1-xNdxCo2 and reveal the corresponding structural and magnetoelastic properties of this system. With high resolution synchrotron X-ray diffractometry, the crystal structure of the TbCo2-rich side is detected to be rhombohedral and that of NdCo2-rich side is tetragonal below their respective Curie temperatures TC. The MPB composition Tb0.35Nd0.65Co2 corresponds to the coexistence of the rhombohedral phase (R-phase) and tetragonal phase (T-phase). Contrary to previously reported MPB involved ferromagnetic systems, the MPB composition of Tb0.35Nd0.65Co2 shows minimum magnetization which can be understood as compensation of sublattice moments between the R-phase and the T-phase. Furthermore, magnetostriction of Tb1-xNdxCo2 decreases with increasing Nd concentration until x = 0.8 and then increases in the negative direction with further increasing Nd concentration; the optimum point for magnetoelastic properties lies towards the rhombohedral phase. Finally, our work not only shows an anomalous type of ferromagnetic MPB but also provides an effective way to design functional materials.},
doi = {10.1063/1.4960462},
journal = {Applied Physics Letters},
number = 5,
volume = 109,
place = {United States},
year = {Thu Aug 04 00:00:00 EDT 2016},
month = {Thu Aug 04 00:00:00 EDT 2016}
}

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