Patent ID: 7205256

Claim:
An oxide material having a perovskite structure comprising an oxide represented by a formula selected from the group consisting of ABO 3 , (Bi 2 O 2 ) 2+ (A m−1 B m O 3m+1 ) 2− , wherein A represents one kind or two or more kinds of ions selected from the group consisting of Li + , Na + , K + , Pb 2+ , Ca 2+ , Sr 2+ , Bi 3+ , Y 3+ , Mn 3+ and La 3+ , B represents one kind or two or more kinds of ions selected from the group consisting of Ru 3+ , Fe 3+ , Ti 4+ , Zr 4+ , Cu 4+ , Nb 5+ , Ta 5+ , V 5+ , W 6+ and Mo 6+ , and m represents a natural number of 1 or more, LnBa 2 Cu 3 O 7 , Z 2 Ba 2 Ca n−1 Cu n O 2n+4 and ZBa 2 Ca n−1 Cu n O 2n+3 , wherein Ln represents one kind or two or more kinds of ions selected from the group consisting of Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, Z represents one kind or two or more kinds of ions selected from the group consisting of Bi, Tl and Hg, and n represents a natural number of from 1 to 5; wherein the oxide material is partially substituted with a catalytic substance containing Si.