| 发明名称 | Piezoelectric ceramic, piezoelectric element, ultrasonic motor, and dust removing device | ||
| 摘要 | There is provided a piezoelectric ceramic having a high and stable piezoelectric constant and a high and stable mechanical quality factor in a wide operating temperature range, and a piezoelectric element according to the present invention includes a main component containing a perovskite type metal oxide having the following general formula (1) or (2); and Mn as a first auxiliary component, (Ba1-xCax)a(Ti1-y-zSnyZrz)O3 (1) (0.08≦x≦0.20, 0.01≦y≦0.04, 0<z≦0.04) (Ba1-xCax)a(Ti1-ySny)O3 (2) (0.08≦x≦0.20, 0.01≦y≦0.04) wherein the amount b (mol) of Mn per mole of the metal oxide is in the range of 0.0048≦b≦0.0400, and the value a of the general formula (1) or (2) is in the range of 0.9925+b≦a≦1.0025+b. | ||
| 申请公布号 | US9240542(B2) | 申请公布日期 | 2016.01.19 |
| 申请号 | US201313868428 | 申请日期 | 2013.04.23 |
| 申请人 | Canon Kabushiki Kiasha | 发明人 | Saito Hiroshi;Oshima Kanako;Miura Kaoru;Yabuta Hisato;Hayashi Jumpei |
| 分类号 | H01L41/47;H01L41/187;H01L41/43;H01L41/083;H01L41/047;B41J2/045;H02N2/00;G02B27/00;H04R17/00;H01L41/09;H01L41/273;H02N2/10;H02N2/16 | 主分类号 | H01L41/47 |
| 代理机构 | Canon U.S.A. Inc., IP Division | 代理人 | Canon U.S.A. Inc., IP Division |
| 主权项 | 1. A piezoelectric ceramic, comprising: a main component containing a perovskite type metal oxide having the following general formula (1) or (2); and Mn as a first auxiliary component, (Ba1-xCax)a(Ti1-y-zSnyZrz)O3 (1)(0.08≦x≦0.20, 0.01≦y≦0.04, 0<z≦0.04) (Ba1-xCax)a(Ti1-ySny)O3 (2)(0.08≦x≦0.20, 0.01≦y≦0.04) wherein the amount b (mol) of Mn per mole of the metal oxide is in the range of 0.0048≦b≦0.0400, and the value a of the general formula (1) or (2) is in the range of 0.9925+b≦a≦1.0025+b. | ||
| 地址 | Tokyo JP | ||