Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Accommodation of Transformation Strains in Transverse Multiferroic Nanostructures CoFe2O4-PbTiO3

Published

Author(s)

Igor Levin, Julia Slutsker, J Li, Z Tan, Alexander L. Roytburd

Abstract

Variable-temperature X-ray diffraction was used to investigate the internal strains that arise from a ferroelectric phase transition in self-assembled multiferroic nanostructures CoFe2O4-PbTiO3 on (001) SrTiO3. The constraints from CoFe2O4 suppressed the c/a ratio in tetragonal PbTiO3 (without affecting its Curie temperature) while the expansion of the out-of-plane lattice parameter in PbTiO3 upon the transition induced tensile out-of-plane strain in CoFe2O4. The transformation strain was partly relieved by the 90 twin domains in PbTiO3 which reduced the net deformation of the component phases. Significant fractions of both c- and a-domains were observed despite the nanoscale of PbTiO3 in the composite films.
Citation
Applied Physics Letters
Volume
91
Issue
6

Keywords

multiferroic, nanostructures, phase transitions, residual stresses, twins

Citation

Levin, I. , Slutsker, J. , Li, J. , Tan, Z. and Roytburd, A. (2007), Accommodation of Transformation Strains in Transverse Multiferroic Nanostructures CoFe<sub>2</sub>O<sub>4-</sub>PbTiO<sub>3</sub>, Applied Physics Letters (Accessed March 28, 2024)
Created August 16, 2007, Updated February 19, 2017