Journal of the Korean Physical Society

, Volume 62, Issue 12, pp 1900–1904 | Cite as

Incommensurate spin spiral of the geometrically-frustrated antiferromagnet CdCr2O4

  • Jae-Ho Chung
  • Young Sang Song
  • Sungil Park
  • Hiroaki Ueda
  • Yutaka Ueda
  • Seung-Hun Lee
Article
  • 108 Downloads

Abstract

CdCr2O4 is a cubic spinel with geometrically-frustrated antiferromagnetic interactions between Cr3+ ions. We investigated the structural and magnetic phase transitions in powder samples by using magnetization and neutron diffraction measurements. An antiferromagnetic phase transition was observed at T N = 8.1 K, below which the crystallographic unit cell was tetragonal (c < a = b). Its incommensurate antiferromagnetic ordering below T N resembles dimerized spin chains in the ab planes with the propagation vector k = (0, 0.088, 1). We argue that the Dzyaloshinskii-Moriya interaction and the magnetic frustration play important roles in establishing the observed magnetic ordering.

Keywords

Geometrical frustration Dzyloshinskii-Moriya exchange Incommensurate magnetic order 

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Copyright information

© The Korean Physical Society 2013

Authors and Affiliations

  • Jae-Ho Chung
    • 1
  • Young Sang Song
    • 1
  • Sungil Park
    • 2
  • Hiroaki Ueda
    • 3
  • Yutaka Ueda
    • 3
  • Seung-Hun Lee
    • 4
  1. 1.Department of PhysicsKorea UniversitySeoulKorea
  2. 2.HANARO CenterKorea Atomic Energy Research InstituteDaejeonKorea
  3. 3.The Institute for Solid State PhysicsThe University of TokyoKashiwa, ChibaJapan
  4. 4.Department of PhysicsUniversity of VirginiaCharlottesvilleUSA

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