Canon Kabushiki Kaisha

Tokyo Institute of Technology

Sophia School Corporation

Shintaro Yasui

Hiroshi Funakubo

Makoto Kubota

Hiroshi Uchida

Jumpei Hayashi

Takayuki Watanabe

Hisato Yabuta

Kaoru Miura

Jun-ichi Nagata

Kenichi Takeda

Tetsuro Fukui

Hideaki Takahashi

Katsumi Aoki

Tomoaki Yamada

Keisuke Yazawa

Ken Nishida

Takahiro Oikawa

Jyunichi Nagata

Provided is a Bi-based piezoelectric material having good piezoelectric properties. The piezoelectric material includes a perovskite-type metal oxide represented by the following general formula (1):A(ZnTi)(MgTi)MO&#x2003;&#x2003;General formula (1)where: A represents a Bi element, or one or more kinds of elements selected from the group consisting of trivalent metal elements and containing at least a Bi element; M represents at least one kind of an element selected from the group consisting of Fe, Al, Sc, Mn, Y, Ga, and Yb; and 0.9&#x2266;x&#x2266;1.25, 0.4&#x2266;j&#x2266;0.6, 0.4&#x2266;k&#x2266;0.6, 0.09&#x2266;l&#x2266;0.49, 0.19&#x2266;m&#x2266;0.64, 0.13&#x2266;n&#x2266;0.48, and l+m+n=1 are satisfied.

Piezoelectric material and devices using the same

The piezoelectric element includes, on a substrate: a piezoelectric film; and a pair of electrodes provided in contact with the piezoelectric film; in which the piezoelectric film contains a perovskite-type metal oxide represented by the general formula (1) as a main component:A(ZnTi)(MgTi)MO&#x2003;&#x2003;General Formula (1)wherein the perovskite-type metal oxide is uniaxially (111)-oriented in pseudo-cubic notation in a thickness direction, of the pair of electrodes, a lower electrode provided on the substrate side is a multilayer electrode including at least a first electrode layer in contact with the substrate and a second electrode layer in contact with the piezoelectric film, and the second electrode layer is a perovskite-type metal oxide electrode which is uniaxially (111)-oriented in pseudo-cubic notation in a thickness direction.

Piezoelectric element, liquid discharge head and liquid discharge apparatus

The present invention provides a piezoelectric element and having a piezoelectric body and a pair of electrodes being contact with the piezoelectric body, wherein the piezoelectric body consists of an ABOperovskite oxide in which an A-site atom consists of Bi and a B-site atom is composed of an atom of at least two types of elements.

Piezoelectric body and liquid discharge head

Growing community of inventors

Yokohama, Japan

Shintaro Yasui