Incommensurate spin spiral of the geometrically-frustrated antiferromagnet CdCr2O4

Jaiho Chung; Young Sang Song; Sungil Park; Hiroaki Ueda; Yutaka Ueda; Seung Hun Lee

doi:10.3938/jkps.62.1900

Incommensurate spin spiral of the geometrically-frustrated antiferromagnet CdCr₂O₄

Jaiho Chung, Young Sang Song, Sungil Park, Hiroaki Ueda, Yutaka Ueda, Seung Hun Lee

Department of Physics

Research output: Contribution to journal › Article

5 Citations (Scopus)

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.

Original language	English
Pages (from-to)	1900-1904
Number of pages	5
Journal	Journal of the Korean Physical Society
Volume	62
Issue number	12
DOIs	https://doi.org/10.3938/jkps.62.1900
Publication status	Published - 2013 Jul 1

Keywords

Dzyloshinskii-Moriya exchange
Geometrical frustration
Incommensurate magnetic order

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.3938/jkps.62.1900

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Chung, J., Song, Y. S., Park, S., Ueda, H., Ueda, Y., & Lee, S. H. (2013). Incommensurate spin spiral of the geometrically-frustrated antiferromagnet CdCr₂O₄ Journal of the Korean Physical Society, 62(12), 1900-1904. https://doi.org/10.3938/jkps.62.1900

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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.",

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AU - Chung, Jaiho

AU - Song, Young Sang

AU - Park, Sungil

AU - Ueda, Hiroaki

AU - Ueda, Yutaka

AU - Lee, Seung Hun

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AB - 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.

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