Structural and ferroelectric properties of 0.9PMN-0.1PT thin films. Issue 1 (14th July 2016)

• Record Type: Journal Article
• Authors: Mietschke, M.; Engelhardt, S.; Fähler, S.; Molin, C.; Gebhardt, S.; Schultz, L.; Hühne, R.
• Is Part Of: Ferroelectrics. Volume 499:Issue 1(2016)
• Page Start: 57
• Page End: 63
• Publication Date: 2016-07-14
• Subjects: PMN-PT films -- epitaxial growth -- perovskite phase -- pulsed laser deposition; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2016.1171984
• Languages: English
• ISSNs: 0015-0193

Abstract

ABSTRACT: Epitaxial films are a useful tool to study the interplay between the microstructure and the electrocaloric properties in order to optimize the performance of these materials. Therefore, epitaxial 0.9Pb(Mg1/3 Nb2/3 )O3 -0.1PbTiO3 (PMN-PT) films were grown by pulsed laser deposition on (001)-oriented single crystalline SrTiO3 (STO) substrates using an epitaxial La0.7 Sr0.3 CoO3 buffer as bottom electrode and additional Au top electrodes on the surface of the PMN-PT layer. The main goal of our study was to characterize the influence of the laser fluence on the structural properties. Our data show that pyrochlore-free PMN-PT films can be realized for low fluences. The relative permittivity and the polarization were determined as a function of temperature to verify the ferroelectric quality of our films.