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- Publisher
- American Physical Society (APS)
- Copyright
- Copyright © 1994 The American Physical Society
- ISSN
- 1095-3795
- DOI
- 10.1103/PhysRevB.50.16475
- Publisher site
- See Article on Publisher Site
Abstract
Interesting compounds of the ABX 3 family can be modeled by antiferromagnetic chains arranged according to a triangular pattern, where each spin is coupled with six nearest neighbors via a weak interchain antiferromagnetic interaction. The behavior of this model in an external magnetic field perpendicular to the c axis has been studied when a sufficiently strong anisotropy forces the spins in the c plane in order to explain the low-temperature transition occurring in CsMnBr 3 . We find that interesting phenomena occur in the opposite limit of weak anisotropy. Indeed an umbrella configuration intervenes between the low-field distorted-helix configuration and the high-field fan configuration. We evaluate the elastic-neutron-scattering cross section and suggest CsVCl 3 , CsVBr 3 , and CsVI 3 as good candidates to test our theoretical prevision.
Journal
Physical Review B – American Physical Society (APS)
Published: Dec 1, 1994