Low-field large magnetostriction in DyCo2 due to field-induced rearrangement of tetragonal variants

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

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Author(s)

  • Zhihua Nie
  • Sen Yang
  • Yandong Wang
  • Zilong Wang
  • Dongmei Liu

Detail(s)

Original languageEnglish
Article number111903
Journal / PublicationApplied Physics Letters
Volume103
Issue number11
Publication statusPublished - 9 Sep 2013
Externally publishedYes

Abstract

The synchrotron high-energy x-ray diffraction was used to trace directly the structural evolution of polycrystalline DyCo2, one of RT 2 (R = rare earth, T = Co, Fe) compounds with Laves phase, as a function of temperature and magnetic field. When the DyCo2 compound was zero-field cooled down below TC, the high temperature cubic lattice was distorted into tetragonal structure, associated with an expansion of unit cell volume. It was further found that the large magnetostriction at low magnetic field was due to the preferential rearrangement of tetragonal variants in the low-temperature ferrimagnetic phase. Our finding of the field-driven preferential selection of tetragonal variants in the polycrystalline materials provides important clues for exploring the advanced ferromagnetic alloys with a large magnetostriction at low field. © 2013 AIP Publishing LLC.

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Citation Format(s)

Low-field large magnetostriction in DyCo2 due to field-induced rearrangement of tetragonal variants. / Nie, Zhihua; Yang, Sen; Wang, Yandong; Wang, Zilong; Liu, Dongmei; Ren, Yang.

In: Applied Physics Letters, Vol. 103, No. 11, 111903, 09.09.2013.

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