Magnetic structure of a frustrated antiferromagnetic spinel CdCr2 O4 studied by spherical neutron polarimetry

Masaaki Matsuda

doi:10.1016/j.physb.2007.02.039

Magnetic structure of a frustrated antiferromagnetic spinel CdCr₂ O₄ studied by spherical neutron polarimetry

Masaaki Matsuda

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

3 Scopus citations

Abstract

A review is given of a magnetic structure of the spinel CdCr₂ O₄, in which geometrical frustration exists between the Cr^{3 +} moments located at the corners of the tetrahedron. It shows an incommensurate antiferromagnetic ordering below T_N = 7.8 K with a characteristic wave vector of Q = (0, δ, 1)(δ ∼ 0.09) . We performed spherical neutron polarimetry analysis and determined that the magnetic structure is elliptical spiral in the ac plane with ellipse slightly elongated along the c-axis. An imbalance in chirality domains was also observed.

Original language	English
Pages (from-to)	7-10
Number of pages	4
Journal	Physica B: Physics of Condensed Matter
Volume	397
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physb.2007.02.039
State	Published - Jul 15 2007
Externally published	Yes

Funding

This work was performed in collaboration with M. Takeda, M. Nakamura, K. Kakurai, A. Oosawa, E. Lelièvre-Berna, J.-H. Chung, S.-H. Lee, H. Ueda and H. Takagi. I would like to thank R. Kajimoto for stimulating discussions. This work was partially supported by a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science.

Funders	Funder number
Japan Society for the Promotion of Science

Keywords

Spherical neutron polarimetry
Spinel
Spiral spin structure

Access to Document

10.1016/j.physb.2007.02.039

Cite this

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abstract = "A review is given of a magnetic structure of the spinel CdCr2 O4, in which geometrical frustration exists between the Cr3 + moments located at the corners of the tetrahedron. It shows an incommensurate antiferromagnetic ordering below TN = 7.8 K with a characteristic wave vector of Q = (0, δ, 1)(δ ∼ 0.09) . We performed spherical neutron polarimetry analysis and determined that the magnetic structure is elliptical spiral in the ac plane with ellipse slightly elongated along the c-axis. An imbalance in chirality domains was also observed.",

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