Dependence of Curie temperature on the thickness of an ultrathin ferroelectric film
نویسندگان
چکیده
منابع مشابه
گرمای ویژه و پذیرفتاری الکتریکی لایه‌های نازک فروالکتریک
In this paper, ferroelectric thin films, described by an ising model in a transverse field, have been studied under the mean-field approximation. We discuss a thin film composed of N-layer film of simple cubic symmetry with nearest-neighbor exchange in which the exchange strength and transverse field are assumed to be different from the bulk values in Ns surface layers, and we derive and illust...
متن کاملThe demonstration of significant ferroelectricity in epitaxial Y-doped HfO2 film
Ferroelectricity and Curie temperature are demonstrated for epitaxial Y-doped HfO2 film grown on (110) yttrium oxide-stabilized zirconium oxide (YSZ) single crystal using Sn-doped In2O3 (ITO) as bottom electrodes. The XRD measurements for epitaxial film enabled us to investigate its detailed crystal structure including orientations of the film. The ferroelectricity was confirmed by electric dis...
متن کاملManifestation of a Ferroelectric Phase Transition
Temperature dependences of the dielectric properties of ultrathin polyvinylidene fluoride films prepared using the Langmuir–Blodgett method were studied by linear and nonlinear dielectric spectroscopy. It is shown that ultrathin Langmuir films of polyvinylidene fluoride exhibit a manifestation of a first-order ferroelectric phase transition, which can be assigned to the interaction between the ...
متن کاملEpitaxial strain stabilization of a ferroelectric phase in PbZrO3 thin films
PbZrO3/SrRuO3/SrTiO3 (100) epitaxial heterostructures with different thickness of the PbZrO3 (PZO) layer (dPZO ∼ 5–160 nm) were fabricated by pulsed laser deposition. The ultrathin PZO films (dPZO 10 nm) were found to possess a rhombohedral structure. On increasing the PZO film thickness, a bulk like orthorhombic phase started forming in the film with dPZO ∼ 22 nm and became abundant in the thi...
متن کاملThick lead-free ferroelectric films with high Curie temperatures through nanocomposite-induced strain.
Ferroelectric materials are used in applications ranging from energy harvesting to high-power electronic transducers. However, industry-standard ferroelectric materials contain lead, which is toxic and environmentally unfriendly. The preferred alternative, BaTiO(3), is non-toxic and has excellent ferroelectric properties, but its Curie temperature of ∼130 °C is too low to be practical. Strain h...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2017