Strong magnetoelastic effect on the magnetoelectric phenomena of TbMn2O5
- Authors
- Oh, Yoon Seok; Jeon, Byung-Gu; Haam, S. Y.; Park, S.; Correa, V. F.; Lacerda, A. H.; Cheong, S. -W.; Jeon, Gun Sang; Kim, Kee Hoon
- Issue Date
- Feb-2011
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW B, v.83, no.6
- Journal Title
- PHYSICAL REVIEW B
- Volume
- 83
- Number
- 6
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/57336
- DOI
- 10.1103/PhysRevB.83.060405
- ISSN
- 1098-0121
- Abstract
- Comparative studies of magnetoelectric susceptibility (alpha), magnetization (M), and magnetostriction (u) in TbMn2O5 reveal that the increment of M owing to the field-induced Tb3+ spin alignment produces a field-asymmetric line shape in the alpha(H) curve, which is conspicuous in a low-temperature incommensurate phase but persistently subsists in the entire ferroelectric phase. Correlations among electric polarization, u, and M-2 variation represent linear relationships, unambiguously showing the significant role of Tb magnetoelastic effects on the low-field magnetoelectric phenomena of TbMn2O5. An effective free energy capturing the observed experimental features is also suggested.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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