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Strong magnetoelastic effect on the magnetoelectric phenomena of TbMn2O5
Physical Review B
Comparative studies of magnetoelectric susceptibility (α), magnetization (M), and magnetostriction (u) in TbMn_2O_5 reveal that the increment of M owing to the field-induced Tb^3+ spin alignment coins a field-asymmetric line shape in the α(H) curve, being conspicuous in a low temperature incommensurate phase but persistently subsisting in the entire ferroelectric phase. Correlations among electric polarization, u, and M^2 variation represent linear relationships, unambiguously showing thedoi:10.1103/physrevb.83.060405 fatcat:5ibnr7usezf5xghg7x6pyyhpam