Conductive electrique caracterisation cristallographique des composes de type perovskite NdCu3RuxTi4−xO12(1 < x < 4) etNd(2+x)/3Cu3RuxTi4−xO12 (x < 1)
Conductive electrique caracterisation cristallographique des composes de type perovskite NdCu3RuxTi4−xO12(1 < x < 4) etNd(2+x)/3Cu3RuxTi4−xO12 (x < 1)
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钙钛矿型 NdCu3RuxTi4−xO12(1 < x < 4) etNd(2+x)/3Cu3RuxTi4−xO12 (x < 1) 组成的导电晶体学特征
DOI：
10.1016/0025-5408(86)90230-8
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发表时间：
1986
影响因子：
5.4
通讯作者：
J. Joubert
中科院分区：
文献类型：
--
作者：
J. Muller;A. Haouzi;C. Laviron;M. Labeau;J. Joubert
在类钙钛矿化合物NdCu/sub 3/Ru/sub x/Ti/sub 4-x/O/sub 12/（1当x = 2（ρ = 2.10/sup-3/.欧米加角cm）。对具有组成NdCu/sub 3/Ru/sub 4/O/sub 12/的单晶的结构精修表明，最小Cu-O距离比其它类钙钛矿化合物ACu/sub 3/B/sub 4/O/sub 12/中的最小Cu-O距离短。这似乎是一个特殊性的阶段。
Substitution of Ru by Ti in the perovskite-like compounds NdCu/sub 3/Ru/sub x/Ti/sub 4-x/O/sub 12/ (1 < x < 4) and Nd/sub (2+x)/3/Cu/sub 3/Ru/sub x/Ti/sub 4-x/O/sub 12/(x < 1) leads to a continuous change in the electrical behavior from metallic type to semiconductor type, as x decreases. The resistivity is temperature-independent for x = 2 (rho = 2.10/sup -3/ ..cap omega...cm). A structural refinement on a single crystal with composition NdCu/sub 3/Ru/sub 4/O/sub 12/ shows that the smallest Cu-O distances are shorter than in the other perovskite-like compounds ACu/sub 3/B/sub 4/O/sub 12/. This seems to be a particularity of the ruthenate phases.