skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Anomalous magnetoelastic behaviour near morphotropic phase boundary in ferromagnetic Tb{sub 1-x}Nd{sub x}Co{sub 2} system

Abstract

In this work, we report a morphotropic phase boundary (MPB) involved ferromagnetic system Tb{sub 1-x}Nd{sub x}Co{sub 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{sub 2}-rich side is detected to be rhombohedral and that of NdCo{sub 2}-rich side is tetragonal below their respective Curie temperatures T{sub C}. The MPB composition Tb{sub 0.35}Nd{sub 0.65}Co{sub 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{sub 0.35}Nd{sub 0.65}Co{sub 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{sub 1-x}Nd{sub x}Co{sub 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. Our work not only shows an anomalous type of ferromagnetic MPB but also provides an effective way to design functional materials.

Authors:
; ; ; ; ; ;  [1]; ;  [2]
  1. School of Science, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behaviour of Materials, Xi'an Jiaotong University, Xi'an 710049 (China)
  2. X-Ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
Publication Date:
OSTI Identifier:
22594327
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 109; Journal Issue: 5; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COBALT COMPOUNDS; CONCENTRATION RATIO; CRYSTALS; CURIE POINT; FERROMAGNETIC MATERIALS; MAGNETIZATION; MAGNETOSTRICTION; NEODYMIUM COMPOUNDS; RESOLUTION; SYNCHROTRONS; TRIGONAL LATTICES; X RADIATION; X-RAY DIFFRACTION; YTTERBIUM COMPOUNDS

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 Tb{sub 1-x}Nd{sub x}Co{sub 2} 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 Tb{sub 1-x}Nd{sub x}Co{sub 2} system. United States. https://doi.org/10.1063/1.4960462
Murtaza, Adil, Yang, Sen, Zhou, Chao, Chang, Tieyan, Chen, Kaiyun, Tian, Fanghua, Song, Xiaoping, Suchomel, Matthrew R., and Ren, Y. Mon . "Anomalous magnetoelastic behaviour near morphotropic phase boundary in ferromagnetic Tb{sub 1-x}Nd{sub x}Co{sub 2} system". United States. https://doi.org/10.1063/1.4960462.
@article{osti_22594327,
title = {Anomalous magnetoelastic behaviour near morphotropic phase boundary in ferromagnetic Tb{sub 1-x}Nd{sub x}Co{sub 2} 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 work, we report a morphotropic phase boundary (MPB) involved ferromagnetic system Tb{sub 1-x}Nd{sub x}Co{sub 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{sub 2}-rich side is detected to be rhombohedral and that of NdCo{sub 2}-rich side is tetragonal below their respective Curie temperatures T{sub C}. The MPB composition Tb{sub 0.35}Nd{sub 0.65}Co{sub 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{sub 0.35}Nd{sub 0.65}Co{sub 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{sub 1-x}Nd{sub x}Co{sub 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. 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},
url = {https://www.osti.gov/biblio/22594327}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 5,
volume = 109,
place = {United States},
year = {2016},
month = {8}
}

Works referencing / citing this record:

Crystal structures and phase relationships in magnetostrictive Tb 1− x Dy x Co 2 system
journal, December 2019