학술논문
Size-driven ferroelectric-paraelectric phase transition in TGS nanocomposites.
Document Type
Article
Author
Source
Subject
*PHASE transitions
*GLASS composites
*NANOCOMPOSITE materials
*DIELECTRIC properties
*POROUS materials
*FERROELECTRIC materials
*PORE size (Materials)
*
*
*
*
*
*
Language
ISSN
1388-0764
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 ( T) with the decreasing particle size was determined. The nature of the T variation can be ascribed to the size-effect theoretically predicted by Zhong et al. (Phys Rev B 50:698-703, ). [ABSTRACT FROM AUTHOR]