Impact of palladium substitution for copper in Bi2CuO4 synthesized via sol-gel method
Impact of palladium substitution for copper in Bi2CuO4 synthesized via sol-gel method
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DOI：
10.1051/epjap/2010100205
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发表时间：
2011
影响因子：
1
通讯作者：
E. Chater;M. Sellami;N. Bettahar
中科院分区：
文献类型：
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作者：
E. Chater;M. Sellami;N. Bettahar
通过用Pd+2取代Bi2CuO4化合物中的Cu2+，合成了一种广泛的新固溶体[J.C.Boivin等，C.R.Hebd.先知阿卡德。科学，爵士。C 276、1105(1973)]。以(铋，铜，钯)硝酸盐和纯柠檬酸为原料，采用溶胶-凝胶法制备了Bi2Cu1-x$PdxO4多晶陶瓷粉末。X-射线衍射图显示单相具有四方对称性，空间群为P4/Ncc(编号130)。在某些情况下，四方晶胞参数c，从而金属-金属距离(dM-M=c/2)随着钯浓度的增加而线性增加。电导率测量表明，随着Pd~(2+)的取代，其电阻率呈规律性下降。有可能获得室温电导率在10-6至10-3 S厘米-1范围内的材料。
An extensive new solid solution was synthesized by substitution of Pd +2 for Cu +2 in Bi 2 CuO 4 compound [J.-C. Boivin et al., C.R. Hebd. Seances Acad. Sci., Ser. C 276 , 1105 (1973)]. Polycrystalline ceramic powder with formula Bi 2 Cu $_{1-x}$ Pd x O 4 were prepared by sol-gel method using (Bi, Cu, Pd) nitrates and pure citric acid. X-ray patterns show a single phase with tetragonal symmetry and space group P 4 /ncc (No. 130). In cases, the tetragonal cell c parameter and therefore the metal-metal distance ( d M-M = c /2) increases linearly with increasing palladium concentration. Electrical conductivity measurements show that the resistivity decreases regularly with pd 2+ substitution. It is possible to obtain materials with an ambient temperature conductivity ranging from 10 -6 to 10 -3 S cm -1 .