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Effects of substrate temperature on the microstructure and ferroelectric properties of Aurivillius Bi6Ti3Fe2O18 thin films

Effects of substrate temperature on the microstructure and ferroelectric properties of Aurivillius Bi6Ti3Fe2O18 thin films

Authors :
Zhenxiang Cheng
Hideo Kimura
Tingting Jia
Hongyang Zhao
Source :
Journal of Alloys and Compounds. 632:473-477
Publication Year :
2015
Publisher :
Elsevier BV, 2015.

Abstract

Aurivillius Bi6Ti3Fe2O18 thin films were deposited by pulsed laser deposition (PLD). X-ray diffraction patterns indicated that the obtained thin films were polycrystalline and belong to orthorhombic F2mm(42) space group. Ferroelectric measurements of as-obtained Bi6Ti3Fe2O18 thin films present an increasement of polarization with increasing substrate temperature which is result from a decrease of leakage current in the films. The positive-up-negative-down (PUND) measurements show switched and non-switched polarization in all of the Bi6Ti3Fe2O18 thin films, which manifest the ferroelectricity in as-deposited thin films. Fatigue-free behavior was obtained in Pt/Bi6Ti3Fe2O18/Pt capacitors. Piezoresponse force microscopy (PFM) measurements show out-of-plane piezoelectric response and demonstrate the ferroelectric polarizability.

Details

ISSN :
09258388
Volume :
632
Database :
OpenAIRE
Journal :
Journal of Alloys and Compounds
Accession number :
edsair.doi...........73fdc96089aef6b28ab392f398dc7e79
Full Text :
https://doi.org/10.1016/j.jallcom.2015.01.251