Research output: Contribution to journal › Article › peer-review
Size effects on the phase transitions in a thin multiferroic film. / Pirozerskii, A. L.; Charnaya, E. V.; Lebedeva, E. L.; Mikushev, V. M.; Bugaev, A. S.
In: Ferroelectrics, Vol. 493, No. 1, 2016, p. 30-38.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Size effects on the phase transitions in a thin multiferroic film
AU - Pirozerskii, A. L.
AU - Charnaya, E. V.
AU - Lebedeva, E. L.
AU - Mikushev, V. M.
AU - Bugaev, A. S.
PY - 2016
Y1 - 2016
N2 - The phenomenological Landau theory was applied for treating the phase transitions in a thin multiferroic film. The multiferroic phase in the relevant bulk was assumed to emerge following two successive phase transitions of the second order. The coupling between the order parameters was implied to be biquadratic as for a multiferroic-magnetoelectric. The variation of the free energy density functional yielded a system of two nonlinear differential Euler-Lagrange equations with four boundary conditions. The boundary value problem was analyzed numerically. It was shown that the phase diagram in the film can differ radically from that in bulk for particular sets of the phenomenological parameters.
AB - The phenomenological Landau theory was applied for treating the phase transitions in a thin multiferroic film. The multiferroic phase in the relevant bulk was assumed to emerge following two successive phase transitions of the second order. The coupling between the order parameters was implied to be biquadratic as for a multiferroic-magnetoelectric. The variation of the free energy density functional yielded a system of two nonlinear differential Euler-Lagrange equations with four boundary conditions. The boundary value problem was analyzed numerically. It was shown that the phase diagram in the film can differ radically from that in bulk for particular sets of the phenomenological parameters.
KW - Multiferroic thin film
KW - phase transition
KW - size effect
KW - Landau theory
KW - numerical analysis
U2 - DOI: 10.1080/00150193.2016.1133204
DO - DOI: 10.1080/00150193.2016.1133204
M3 - Article
VL - 493
SP - 30
EP - 38
JO - Ferroelectrics
JF - Ferroelectrics
SN - 0015-0193
IS - 1
ER -
ID: 7561095