Publicación: Strong magnetoelastic effect on the magnetoelectric phenomena of TbMn2O5
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Fil.: Correa, V.F. Comisión Nacional de Energía Atómica. Instituto Balseiro; Argentina
Fil.: Oh, Y.S. Seoul National University; Korea
Fil.: Jeon, B. Seoul National University; Korea
Fil.: Haam, S.Y. Seoul National University; Korea
Fil.: Park, S. Rutgers Center for Emergent Materials and Department of Physics & Astronomy; Estados Unidos
Fil.: Lacerda, A.H. Los Alamos National Laboratory; Estados Unidos
Fil.: Cheong, S.-W. Rutgers Center for Emergent Materials and Department of Physics & Astronomy; Estados Unidos
Fil.: Jeon, G.S. Seoul National University; Korea
Fil.: Kim, K.H. Seoul National University; Korea
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Centro Atómico Bariloche
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eng
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Comparative studies of magnetoelectric susceptibility (α), 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 α(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 M2 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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Physical Review B. Vol. 83, no. (2011), p. 060405