Manganese-containing complex oxide, and process for preparing co

Details Manganese-containing complex oxide, and process for preparing co Manganese-containing complex oxide, and process for preparing co

1998-02-27

1999-05-18

Straub, Gary P.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423592, 423593, 423594, 423599, 423606, 423622, 429224, C01B13/14

Patent

active

059049111

ABSTRACT:
There are herein disclosed a raw material for a complex perovskite ceramic composition which is intended to uniformly disperse a trace amount of an addition component (manganese) therein, and a process for preparing the ceramic composition.
A manganese-containing composite oxide is represented by the general formula (Mn.sub.a MeI.sub.1-a)MeII.sub.b O.sub.c wherein a is a value in the range of 0<a.ltoreq.0.3; MeI is at least one of Mg, Ni and Zn; MeII is one of Nb, Ta and W; when MeII is Nb or Ta, b is 2 and c is 6, or when MeII is W, b is 1 and c is 4. By the use of a raw material containing this manganese-containing complex oxide, there can be prepared an Mn-containing complex perovskite compound composition which contains Mn and at least one of complex perovskite compounds represented by the general formula Pb(BIBII)O.sub.3 wherein BI is one of Mg, Ni and Zn; and BII is one of Nb, Ta and W.

REFERENCES:
patent: 5262369 (1993-11-01), Mori et al.
patent: 5275988 (1994-01-01), Mori et al.
patent: 5506077 (1996-04-01), Koksbang
patent: 5672329 (1997-09-01), Okada et al.
S.L. Swartz et al., "Fabrication of Perovskite Lead Magnesium Niobate", Mat. Res. Bull., vol. 17, No. 10, 1982, pp. 1245-1250.

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