Effect of internal friction on transformation twin dynamics in perovskite SrxBa1-xSnO~3 (x=0.6,0.8)

Daraktchiev, M. and Salje, E. K. H. and Lee, W. T. and Redfern, S. A. T. (2007) Effect of internal friction on transformation twin dynamics in perovskite SrxBa1-xSnO~3 (x=0.6,0.8). Physical Review B, 75. p. 134102. DOI 10.1103/PhysRevB.75.134102

[img] PDF
Daraktchiev_et_Phys_Rev_B_2007.pdf
Restricted to Registered users only

Download (585kB)

Abstract

The dynamics of transformation twins in SrxBa1−xSnO3 (x=0.6,0.8) perovskite has been studied by dynamical mechanical analysis in three-point bend geometry. This material undergoes phase transitions from orthorhombic to tetragonal and cubic structures on heating. The mechanical loss signatures of the transformation twins include relaxation and frequency-independent peaks in the orthorhombic, and tetragonal phases, with no observed energy dissipation in the cubic phase. The macroscopic shape, orientation, and relative displacements of twin walls have been calculated from bending and anisotropy energies. The mechanical loss angle and distribution of relaxation time are discussed in terms of bending modes of domain walls.

Item Type: Article
Uncontrolled Keywords: 2007 AREP IA54 2007 P
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
Journal or Publication Title: Physical Review B
Volume: 75
Page Range: p. 134102
Identification Number: 10.1103/PhysRevB.75.134102
Depositing User: Sarah Humbert
Date Deposited: 16 Feb 2009 13:02
Last Modified: 23 Jul 2013 10:06
URI: http://eprints.esc.cam.ac.uk/id/eprint/234

Actions (login required)

View Item View Item

About cookies