Title:
半導体磁器組成物とその製造方法
Document Type and Number:
Japanese Patent JP5228917
Kind Code:
B2
Abstract:
It is intended to provide a Pb-free semiconductor ceramic composition capable of shifting its Curie temperature toward a positive direction and capable of enhancing its jump characteristic while minimizing the increase in the resistivity at room temperature. There is provided a semiconductor ceramic composition in which a part of Ba of BaTiO 3 is substituted with Bi-Na, the semiconductor ceramic composition being obtained by sintering a mixed calcined powder containing a calcined BT powder containing a calcined powder of (BaR)TiO 3 or a calcined powder of Ba(TiM)O 3 (in which R and M each are a semiconductor dopant), and a calcined BNT powder containing a calcined powder of (BiNa)TiO 3 ; in which BaCO 3 and/or TiO 2 is/are added to the calcined BT powder or the calcined BNT powder or to the mixed calcined powder.
Inventors:
Takeshi Shimada
Kazuya Taji
Kazuya Taji
Application Number:
JP2008541043A
Publication Date:
July 03, 2013
Filing Date:
October 26, 2007
Export Citation:
Assignee:
Hitachi Metals Co., Ltd.
International Classes:
C04B35/468; H01C7/02
Foreign References:
| WO2006106910A1 | 2006-10-12 |
Other References:
JPN6012050585; Ｗｅｉｒｏｎｇ Ｈｕｏ ｅｔ ａｌ．: 'Ｅｆｆｅｃｔｓ ｏｆ Ｂｉ１／２Ｎａ１／２ＴｉＯ３ ｏｎ ｔｈｅ Ｃｕｒｉｅ ｔｅｍｐｅｒａｔｕｒｅ ａｎｄ ｔｈｅ ＰＴＣ ｅｆｆｅｃｔｓ ｏｆ ＢａＴｉＯ３-Ｂａｓｅｄ ｐｏｓｉｔｉｖｅ ｔｅｍｐ' Ｓｅｎｓｏｒｓ ａｎｄ Ａｃｔｕａｔｏｒｓ Ａ Ｖｏｌ．１２８（２００６）, 20030220, ｐｐ．２６５-２６９
Attorney, Agent or Firm:
Shinei Patent Office
Teruo Naito
Teruo Naito