| 摘要 |
A substituted barium-neodymium-titanium-perovskite which has a defect structure and which has the following general composition:[A'alml+ A''a2n2+ . . . An'annn++570 an+1] [B'b1m1+ B''b2m2 + . . . Bm'bmmn+] O3, wherein the cations A'a1n1+ A''a2n2+ . . . An'annn+ at least comprise Ba2+, Nd3+ and, optionally, one or more cations of the group consisting of Cs1+, Rb1+, Tl1+, K1+, Pb2+, Ag1+, Sr2+, Na1+, Bi3+, La3+, Ca2+, Ce3+, Cd2+, Pr3+, Sm3+, Eu3+, Gd3+, Th4+, Tb3+, Mn2+, Li1+, Dy3+, U4+, Y3+, Fe2+, Ho3+, Ce4+, Co2+, Zn2+, Er3+, Tm3+, Yb3+, and/or Lu3+, and the cations B'b1m1+ B''b2m2+ . . . Bm'bmmn+ at least comprise titanium Ti4+ and, optionally, one or more cations of the group consisting of Mn2+, Cr2+, In3+, V2+, Fe2+, Pb4+, Li1+, Zr4+, Co2+, Sc3+, Zn2+, Cu2+, U6+, Mg2+, Hf4+, Mo3+, Sn4+, Ni2+, Nb4+, Ti3+, W4+, Mo4+, Fe3+, Mn3+, V3+, Re4+, Ir4+, Ru4+, W5+, Ta5+, Cr3+, Ga3+, Co3+, Mo5+, Ni3+, Sb5+, W6+, Nb5+, Mo6+, Fe4+, Re5+, V4+, Te6+, V5+, Cu3+, Al3+, Mn4+, Ge4+, and/or Re7+ and +570 are cation vacancies, and a1+a2+. . . +an+1=1, 0.17<an+1<0.30, b1+b2+. . . +bn=1 and a1*n1+a2*n2+. . . +an*nn+b1*m1+b2*m2+ . . . +b m*mm=6, is an improved dielectric, ceramic material whose dielectric properties can be reliably reproduced and optimized for specific fields of application. A dielectric, ceramic composition comprising said substituted barium-neodymium-titanium-perovskite can suitably be used as the dielectric material in capacitors, for example NPO-capacitors, and microwave components, in particular dielectric resonators.
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