Metal niobates and/or tantalates, their preparation and perovski

Details Metal niobates and/or tantalates, their preparation and perovski Metal niobates and/or tantalates, their preparation and perovski

1995-09-28

1998-02-24

Jones, Deborah

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

501135, C04B 3500

Patent

active

057211825

ABSTRACT:
Highly reactive metal niobates and/or metal tantalates of the general formula Me(II)A.sub.2 O.sub.6 or Me(III)AO.sub.4, a method for the preparation thereof, their further processing to form perovskites of the general formula X(B'B")O.sub.3 wherein X signifies Pb and/or Ba, B' signifies Mg, Fe, Co, Ni, Cr, Mn, Cd, Ti, Zr and/or Zn and B" signifies Nb and/or Ta, as well as these perovskites are provided through the present invention. An additive of Li, Na and/or K is provided to the niobates/tantalates in 0.1 to 20 mol-%.

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