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Phase diagrams of ferroelectric thin film with two surface layers

  • H. Arhchoui (a1), Y. El Amraoui (a1), D. Mezzane (a2) and I. Luk'yanchuk (a3)

Abstract

Phase diagram of a ferroelectric thin film with two surface layers is studied in frame of the effective field theory (EFT) of transverse Ising model (TIM). The surface of the system is formed from two layers characterized by the exchange interaction anisotropy $R_s =\frac{J_s }{J}$ and the transverse field $\Omega _{s}$ . The crossover from the ferroelectric phase (FP) to the paraelectric phase (PP) is discussed. The phase diagram of the system is studied in $\big( {\frac{K_B T_c }{J},\frac{\Omega _s }{J}} \big)$ coordinates as function of the thickness parameter L. The special attention is given to the effect of the transverse field $\Omega _{s}$ on the phase transitions.

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Phase diagrams of ferroelectric thin film with two surface layers

  • H. Arhchoui (a1), Y. El Amraoui (a1), D. Mezzane (a2) and I. Luk'yanchuk (a3)

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