Local structure study on magnetostrictive material Tb1-xDyxFe2

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Tieyan Chang
  • Chao Zhou
  • Kaige Chang
  • Bin Wang
  • Qian Shi
  • Kaiyun Chen
  • Yu-Sheng Chen
  • Sen Yang

Detail(s)

Original languageEnglish
Article number235102
Journal / PublicationJournal of Applied Physics
Volume127
Issue number23
Online published15 Jun 2020
Publication statusPublished - 21 Jun 2020
Externally publishedYes

Abstract

Tb1-xDyxFe2 system has attracted more research interest due to the large magnetostrictive effect. The crystal structures and physical properties have been well studied, but research studies on their local structures are still rare. In this work, the local structure of Tb1-xDyxFe2 samples was studied using the pair distribution function and x-ray absorption spectroscopy techniques. The results demonstrate that the system owns the same local crystal symmetry with its average structure in the ferromagnetic phase, and the crystal lattice of the system is more ordered with increasing Dy content, indicating that the Dy-rich tetragonal phase is more stable than the Tb-rich rhombohedral phase. The different roles of metallic bonds in affecting the crystal lattice are presented. The weak Fe1-Fe2 bonds influenced by the local environment such as local stress from randomly distributed nanodomains could originate the anomalies in the lattice, resulting in the more ordered and stable Dy-rich phase than the Tb-rich phase.

Citation Format(s)

Local structure study on magnetostrictive material Tb1-xDyxFe2. / Chang, Tieyan; Zhou, Chao; Chang, Kaige; Wang, Bin; Shi, Qian; Chen, Kaiyun; Chen, Yu-Sheng; Ren, Yang; Yang, Sen.

In: Journal of Applied Physics, Vol. 127, No. 23, 235102, 21.06.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review