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.

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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