The magnetic structure of CeAl2 is a non-chiral spiral

E. M. Forgan; B. D. Rainford; S. L. Lee; J. S. Abell; Y. Bi

doi:10.1088/0953-8984/2/50/026

The magnetic structure of CeAl₂ is a non-chiral spiral

E. M. Forgan^*, B. D. Rainford, S. L. Lee, J. S. Abell, Y. Bi

^*Corresponding author for this work

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

Abstract

The previously accepted spatially modulated magnetic structure of CeAl ₂ is shown to be incorrect. Neutron diffraction measurements in an applied magnetic field imply that the zero-field magnetic structure is spiral: however, the moments on the two Ce sublattices rotate in opposite senses. In the author's model, the magnitude of the Ce ordered moment varies little from site to site; a non-magnetic ground state for the Ce³⁺ ion is no longer required, and the extreme weakness of the harmonics is explained.

Original language	English
Article number	026
Pages (from-to)	10211-10216
Number of pages	6
Journal	Journal of Physics: Condensed Matter
Volume	2
Issue number	50
DOIs	https://doi.org/10.1088/0953-8984/2/50/026
Publication status	Published - 1990

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abstract = "The previously accepted spatially modulated magnetic structure of CeAl 2 is shown to be incorrect. Neutron diffraction measurements in an applied magnetic field imply that the zero-field magnetic structure is spiral: however, the moments on the two Ce sublattices rotate in opposite senses. In the author's model, the magnitude of the Ce ordered moment varies little from site to site; a non-magnetic ground state for the Ce3+ ion is no longer required, and the extreme weakness of the harmonics is explained.",

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AU - Bi, Y.

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AB - The previously accepted spatially modulated magnetic structure of CeAl 2 is shown to be incorrect. Neutron diffraction measurements in an applied magnetic field imply that the zero-field magnetic structure is spiral: however, the moments on the two Ce sublattices rotate in opposite senses. In the author's model, the magnitude of the Ce ordered moment varies little from site to site; a non-magnetic ground state for the Ce3+ ion is no longer required, and the extreme weakness of the harmonics is explained.

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The magnetic structure of CeAl₂ is a non-chiral spiral

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