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Polarization Enhancement of Nd-Modified Bismuth Titanate Prepared by Pulsed Laser Deposition at Low Temperature

Published online by Cambridge University Press:  01 February 2011

Wu Wenbiao ,
Shibuya Akira ,
Noda Minoru  and
Okuyama Masanori
Wu Wenbiao
Affiliation:
Graduate School of Engineering Science, Osaka University, Toyonaka, JP
Shibuya Akira
Affiliation:
Graduate School of Engineering Science, Osaka University, Toyonaka, JP
Noda Minoru
Affiliation:
Graduate School of Engineering Science, Osaka University, Toyonaka, JP
Okuyama Masanori
Affiliation:
Graduate School of Engineering Science, Osaka University, Toyonaka, JP
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Abstract

Neodymium-modified Bi4Ti3O12(BNdT) thin films have been prepared by pulsed laser deposition (PLD), aiming to realize enhanced ferroelectric properties by a low temperature treatment. When deposited at 500°C, the film shows P-E hysteresis having twice remanent polarization 2Pr of 78.8 μC/cm-2, coercive force Ec of about 250 kV/cm, and leakage current of less than 10-7 A/cm2 from -50 to +50 kV/cm. Good fatigue properties of BNdT films deposited at 5 Hz have been obtained up to 1010 cycles of 500 kHz bipolar square pulses, with less than 25% decrease of +Pr and -Pr.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 784: Symposium C – Ferroelectric Thin Films XII , 2003 , C11.39
Copyright
Copyright © Materials Research Society 2004

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REFERENCES

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