Strong magnetoelastic effect on the magnetoelectric phenomena of TbMn2O5

Article

关键词: MAGNETOSTRICTION;   

DOI  :  10.1103/PhysRevB.83.060405

来源: SCIE

【 摘 要 】

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.

【 授权许可】

Free