公开(公告)号：US20240317646A1

公开(公告)日：2024-09-26

申请号：US18578172

申请日：2022-05-24

Applicant: NITERRA CO., LTD.

Inventor： Yoshinobu HIROSE ,  Ryosuke KOBAYASHI ,  Takashi KASASHIMA ,  Masato YAMAZAKI

IPC: C04B35/49 ,  H10N30/853

CPC classification number: C04B35/49 ,  H10N30/8542 ,  C04B2235/3249 ,  C04B2235/3255 ,  C04B2235/768 ,  C04B2235/785 ,  C04B2235/786

Abstract: A lead-free piezoelectric ceramic composition which includes a primary phase formed of an alkali niobate-based perovskite oxide represented by a compositional formula (A1aM1b)c(Nbd1, Mnd2, M2d3)O3+e (in which element A1 represents at least one species among the alkali metals; element M1 represents at least one species among Ba, Ca, and Sr; element M2 represents at least one species of Ti and Zr; the following conditions: 0 1.0.