Incommensurate spin spiral of the geometrically-frustrated antiferromagnet CdCr2O4

Jae Ho 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

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

9 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

Bibliographical note

Funding Information:
The authors are grateful to Dr. Eui Kwan Koh of the Korean Basic Science Institute (KBSI) for carrying out DC magnetization measurements. This work is financially supported by National Research Foundation of Korea through the Advanced Research Center for Nuclear Energy & Technology (Grant No. 2011-0031933) and the Nuclear R&D Program (Grants No. 2012-025968 and No. 2012-029621).

Keywords

Dzyloshinskii-Moriya exchange
Geometrical frustration
Incommensurate magnetic order

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.3938/jkps.62.1900

Cite this

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title = "Incommensurate spin spiral of the geometrically-frustrated antiferromagnet CdCr2O4",

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 = "Dzyloshinskii-Moriya exchange, Geometrical frustration, Incommensurate magnetic order",

author = "Chung, {Jae Ho} and Song, {Young Sang} and Sungil Park and Hiroaki Ueda and Yutaka Ueda and Lee, {Seung Hun}",

note = "Funding Information: The authors are grateful to Dr. Eui Kwan Koh of the Korean Basic Science Institute (KBSI) for carrying out DC magnetization measurements. This work is financially supported by National Research Foundation of Korea through the Advanced Research Center for Nuclear Energy & Technology (Grant No. 2011-0031933) and the Nuclear R&D Program (Grants No. 2012-025968 and No. 2012-029621).",

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T1 - Incommensurate spin spiral of the geometrically-frustrated antiferromagnet CdCr2O4

AU - Chung, Jae Ho

AU - Song, Young Sang

AU - Park, Sungil

AU - Ueda, Hiroaki

AU - Ueda, Yutaka

AU - Lee, Seung Hun

N1 - Funding Information: The authors are grateful to Dr. Eui Kwan Koh of the Korean Basic Science Institute (KBSI) for carrying out DC magnetization measurements. This work is financially supported by National Research Foundation of Korea through the Advanced Research Center for Nuclear Energy & Technology (Grant No. 2011-0031933) and the Nuclear R&D Program (Grants No. 2012-025968 and No. 2012-029621).

PY - 2013/7

Y1 - 2013/7

N2 - 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.

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.

KW - Dzyloshinskii-Moriya exchange

KW - Geometrical frustration

KW - Incommensurate magnetic order

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