The present invention provides a metal oxide material volume decreases in the temperature range practical. The general formula (1) A'A 3 B 4 O 12 (1) (Wherein, A 'A and an element occupying the A site of the perovskite oxide, A' La, Bi, Y, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er is shows the at least one metal element selected from the group consisting of Tm, Yb, Lu, Ca, Sr, Ba, Pb, and K and Na, A transition of at least one member selected from the group consisting of Cu, Mn, and Ni and Fe shows a metallic element, B is an element occupying the B-site of the perovskite oxide, and is selected from the group consisting of Fe, Ti, V, Cr, Cu, Mn, Co, Ni, Ge, Sn, and Ru Zr . indicating the transition metal element of at least one) perovskite oxide represented by the formula.
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机译：本发明提供了在实际温度范围内金属氧化物材料体积减小的方法。通式（1）A'A 3 B 4 O 12 （1）（其中，A'A和占据A的元素钙钛矿氧化物的位点，A'La，Bi，Y，Pr，Nd，Sm，Eu，Gd，Tb，Dy，Ho，Er显示了选自Tm，Yb，Lu的至少一种金属元素，Ca，Sr，Ba，Pb，K和Na，选自Cu，Mn，Ni和Fe的至少一种元素的过渡态表示金属元素，B是占据B的B位的元素。钙钛矿氧化物，并且选自Fe，Ti，V，Cr，Cu，Mn，Co，Ni，Ge，Sn和Ru Zr，其表示至少一种由以下代表的钙钛矿氧化物的过渡金属元素。公式。
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