Open AccessPhase transformations and dielectric characteristics of FE-relaxor Sr0.75Ba0.25Nb2O6 ceramics and thin films
Author(s) -
A. V. Pavlenko,
G. N. Tolmachev,
D. V. Stryukov,
С.Х. Алихаджиев,
Iu. M. Aliev,
K. M. Zhidel,
S. N. Tsebaev,
Р. С. Джамбулатов
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/905/1/012053
Subject(s) - tetragonal crystal system , materials science , ceramic , dielectric , thin film , tungsten , phase (matter) , substrate (aquarium) , ferroelectricity , composite material , plane (geometry) , mineralogy , condensed matter physics , metallurgy , geometry , optoelectronics , nanotechnology , chemistry , mathematics , oceanography , organic chemistry , physics , geology
In the paper the results of a structure and dielectric properties study of ferroelectric-relaxor Sr 0.75 Ba 0.25 Nb 2 O 6 (SBN-75) ceramics and thin films with the structure of an unfilled tetragonal tungsten bronze have been presented. The existence of orientation domains in the SBN-75 film with rotation in the interface plane only by angles of ± 18.4° relative to the axes of the MgO substrate is revealed. In the tetragonal approximation, the unit cell parameters of the film (c = 3.948 Å and a = 12.49 Å) and its strain in comparison with the cell parameters of the ceramic sample have been determined.