Ferroelectric Bi4-x Smx Ti3 O12 Thin Films Fabricated by Pulsed Laser Deposition for Nv-RAM Applications
Title:
Ferroelectric Bi4-x Smx Ti3 O12 Thin Films Fabricated by Pulsed Laser Deposition for Nv-RAM Applications
Author:
Hu, X. B. Garg, A. Wang, J. Barber, Z. H.
Appeared in:
Integrated ferroelectrics
Paging:
Volume 61 (2004) nr. 1 pages 123-127
Year:
2004
Contents:
Ferroelectric Bi4-xSmxTi3O12 (BSmT) thin films have been fabricated on Pt/TiOx/SiO2/Si substrates by pulsed laser deposition (PLD) and their ferroelectric properties have been characterised. The remanent polarisation (2Pr) was 17.5 μ C/cm2, 41.8 μ C/cm2, 9.3 μ C/cm2, for x = 0.55, 0.70, and 1.00, respectively, at an applied maximum field of 450 kV/cm. The polarisation of the BSmT (x = 0.70) film decreased to 86% of the initial value after 5.0× 108 switching cycles.