title: Size-driven ferroelectric-paraelectric phase transition in TGS nanocomposites.
abstract: Dielectric properties of porous glass nanocomposites with TGS crystals embedded into six porous matrices with average pore size from 5 to 312 nm were investigated in the temperature range from 280 to 380 K at selected frequencies. The results are discussed based on the effect of the particle size on the phase transition temperature of TGS nanocomposites. Temperature-size phase diagram of TGS composites was derived. Non-monotonic character of the temperature-driven phase transition (Tp) with the decreasing particle size was determined. The nature of theTpvariation can be ascribed to the size-effect theoretically predicted by Zhong et al. (Phys Rev B 50:698-703, 1994).
authors.affiliation: Institute of Physics, Wrocław University of Technology, Wybrzeże St. Wyspiańskiego 27, 50-370 Wrocław, Poland.
authors.forename: A
authors.initials: A
authors.lastname: Cizman
authors.forename: T
authors.initials: T
authors.lastname: Antropova
authors.forename: I
authors.initials: I
authors.lastname: Anfimova
authors.forename: I
authors.initials: I
authors.lastname: Drozdova
authors.forename: E
authors.initials: E
authors.lastname: Rysiakiewicz-Pasek
authors.forename: E B
authors.initials: EB
authors.lastname: Radojewska
authors.forename: R
authors.initials: R
authors.lastname: Poprawski
keywords: Ferroelectric nanocomposites; Phase transition; Porous matrix; Size effect