Magnetic, ferroelectric, and dielectric properties of Bi(Sc0.5Fe0.5)O-3-PbTiO3 thin films

Abstract

Bi(Sc0.5Fe0.5)O-3-PbTiO3 (BSF-PT) thin films with a composition in the vicinity of a morphotropic phase boundary (MPB) between rhombohedral and tetragonal phases have been grown on LaNiO3/SiO2/Si substrates at 550 degrees C and 150 mTorr by pulsed laser deposition. The dielectric properties of the film were enhanced due to high crystallinity, low porosity, and the vicinity of the MPB. A saturated ferroelectric hysteresis loop was obtained with 2P(r)=76 mu C/cm, and the leakage current was minimized by cooling the samples, postdeposition in O-2. Magnetic measurements revealed that BSF-PT thin films were antiferromagnetic confirming their anticipated multiferroic nature. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3093691]

Description
Keywords
CHARGE-LIMITED CURRENTS, MULTIFERROICS, Physics, Applied, Physics
Citation
Yan, F., Sterianou, I., Miao, S., Reaney, I., Lai, M., Lu, L. (2009): Magnetic, ferroelectric, and dielectric properties of Bi(Sc0.5Fe0.5)O3–PbTiO3 thin films. Journal of Applied Physics, 105 (7). DOI: 10.1063/1.3093691