Stabilization of the elliptical spiral phase and the spin-flop transition in multiferroic Mn1-xCoxWO4
- Authors
- Song, Y. -S.; Chung, J. -H.; Park, J. M. S.; Choi, Y. -N.
- Issue Date
- 6월-2009
- Publisher
- AMER PHYSICAL SOC
- Keywords
- cobalt compounds; dielectric polarisation; doping profiles; ferroelectric transitions; magnetic structure; magnetic transitions; manganese compounds; multiferroics
- Citation
- PHYSICAL REVIEW B, v.79, no.22
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW B
- Volume
- 79
- Number
- 22
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/119882
- DOI
- 10.1103/PhysRevB.79.224415
- ISSN
- 2469-9950
- Abstract
- We have studied the effect of Co doping on the magnetic properties of multiferroic Mn1-xCoxWO4 using vibrating sample magnetometry and neutron powder diffraction. We find that Co doping at x greater than or similar to 0.05 suppresses the commensurate AF1 phase and stabilizes the incommensurate spiral AF2 phase down to the lowest temperature. As the Co doping concentration increases further, a spin-flop transition occurs with the spiral-basal plane tilting off the b axis. Such magnetic structure expects a ferroelectric polarization component along the a axis. The resulting phase diagram is richer than the case of Fe doping.
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