TY - JOUR
T1 - Synthesis and electrical properties of Ba2Nb5-xZrxO9
AU - Iwasaki, Kouta
AU - Takizawa, Hirotsugu
AU - Uheda, Kyota
AU - Endo, Tadashi
AU - Shimada, Masahiko
N1 - Funding Information:
This work has been supported in part by a Grant-in Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture, Japan. The authors are indebted to Mr. Yuji Yaegashi, Tohoku Electric Power Co., for magnetic measurements.
PY - 2000/8/10
Y1 - 2000/8/10
N2 - The Ba2Nb5-xZrxO9 solid solution was first synthesized by the solid state reaction, and Zr proved to be substituted selectively for Nb in the preferred site of Ba2Nb5O9. The structure of Ba2Nb5-xZrxO9 consists of a NbO layer sandwiched by two Ba(Nb, Zr)O3 perovskite blocks. The limit of Zr-substitution was estimated to be x = 1.0, according to the change of c axis parameter against x. SEM observation showed that platy agglomerates preferred the orientation of the 00l plane, and the particle size was reduced by up to 1/10 on the addition of Zr. The solid solution showed a metallic conductivity with a temperature independent magnetic susceptibility. Substitution of Zr for Nb appeared to cause a change in electron density as a result of contraction of the Nb(2)-O(3) distance, leading to the increase of electrical resistivity.
AB - The Ba2Nb5-xZrxO9 solid solution was first synthesized by the solid state reaction, and Zr proved to be substituted selectively for Nb in the preferred site of Ba2Nb5O9. The structure of Ba2Nb5-xZrxO9 consists of a NbO layer sandwiched by two Ba(Nb, Zr)O3 perovskite blocks. The limit of Zr-substitution was estimated to be x = 1.0, according to the change of c axis parameter against x. SEM observation showed that platy agglomerates preferred the orientation of the 00l plane, and the particle size was reduced by up to 1/10 on the addition of Zr. The solid solution showed a metallic conductivity with a temperature independent magnetic susceptibility. Substitution of Zr for Nb appeared to cause a change in electron density as a result of contraction of the Nb(2)-O(3) distance, leading to the increase of electrical resistivity.
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U2 - 10.1016/S0925-8388(00)00904-X
DO - 10.1016/S0925-8388(00)00904-X
M3 - Article
AN - SCOPUS:0034250291
VL - 308
SP - 109
EP - 114
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
IS - 1-2
ER -