Temperature evolution of diffuse scattering in Sr0.6Ba0.4Nb2O6 single crystal in the relaxor state

Temperature evolution of diffuse scattering in Sr0.6Ba0.4Nb2O6 single crystal in the relaxor state

Temperature dependences of diffuse scattering of synchrotron radiation on model relaxor single crystal Sr0.6Ba0.4Nb2O6 have been studied in the temperature interval 90 – 290 K in the vicinities of lattice points (3 3 2), (4 1 2) and (0 0 2) in the directions [0 0 1], [0 1 0] and [1 -1 0]. It is sho...

Full description

Bibliographic Details
Main Authors: Vanina Polina, Silin Nikita, Bosak Alexey, Chernyshov Dmitry, Naberezhnov Alexander
Format: Article
Language:English
Published: Peter the Great St.Petersburg Polytechnic University 2020-12-01
Series:St. Petersburg Polytechnical University Journal: Physics and Mathematics
Subjects:
diffuse scattering
synchrotron radiation
relaxor
strontium-barium niobate
crystal structure
Online Access:https://physmath.spbstu.ru/article/2020.50.02/
Description
Summary:Temperature dependences of diffuse scattering of synchrotron radiation on model relaxor single crystal Sr0.6Ba0.4Nb2O6 have been studied in the temperature interval 90 – 290 K in the vicinities of lattice points (3 3 2), (4 1 2) and (0 0 2) in the directions [0 0 1], [0 1 0] and [1 -1 0]. It is shown, that this diffuse scattering (DS) is a strongly anisotropic. Its intensity IDS(T,q) is proportional q-α, where q is a reduce wavevector. The temperature dependences of the parameters α have been obtained, and it is established, that the microscopic modification of structure in Sr0.6Ba0.4Nb2O6 continues on cooling below a transition in the relaxor state.
ISSN:2405-7223

Similar Items