Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
ISSN-L : 1348-6535
Full papers
Deposition of orientation-controlled thick (K,Na)NbO3 films on metal substrates by repeated hydrothermal deposition technique
Yoshiharu ITOAkinori TATEYAMAYoshiko NAKAMURATakao SHIMIZUMinoru KUROSAWAHiroshi UCHIDATakahisa SHIRAISHITakanori KIGUCHIToyohiko J. KONNOMutsuo ISHIKAWAHiroshi FUNAKUBO
Author information
JOURNALS FREE ACCESS

2019 Volume 127 Issue 7 Pages 478-484

Details
Abstract

(K,Na)NbO3 thick films were grown at 240°C on Ni-based metal substrates by repeated hydrothermal method. The metal substrates were covered with two types of buffer layers; SrRuO3/LaNiO3 and SrRuO3. Film thickness monotonically increased with increasing number of deposition cycles. The 27 µm-thick film was obtained on the metal substrate with SrRuO3/LaNiO3 by four cycles. The obtained films tended to show {100}c orientation and their degree of orientation increased with increasing number of deposition cycles. Films deposited on SrRuO3/LaNiO3-covered metal substrates showed more highly {100}c orientation compared with those on SrRuO3-covered metal substrates. Remnant polarization and coercive field measured at 5 kHz were 12 µC/cm2 and 70 kV/cm, while their effective values of piezoelectric coefficient (d33) was 35–40 pm/V for both films. These properties remained unchanged irrespective of a number of deposition cycles despite the orientation change of films. These results show that repeated hydrothermal deposition technique is one of the effective ways to prepare thick (K,Na)NbO3 films on metal substrates.

Information related to the author
© 2019 The Ceramic Society of Japan
Previous article Next article
feedback
Top