journal article·2016-12Open access

Order–disorder phase transitions in thin films described by transverse Ising model

Nguyen Tu Niem, Bach Huong Giang, Bach Thanh Cong

Abstract

The order–disorder phase transition in thin films at finite temperature and zero temperature (quantum phase transition) is discussed within the transverse Ising model using molecular field approximation. Experimentally, it is shown that the Curie temperature T C of perovskite PbTiO 3 ultra-thin film decreases with decreasing film thickness. We obtain an equation for T C of thin film in external magnetic and transverse fields. Our equation explains well for the case of strong transverse strain field this behaviour.
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Research context

OpenAlex topics: Ferroelectric and Piezoelectric Materials · Electronic and Structural Properties of Oxides · Magnetic and transport properties of perovskites and related materials

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