PREPARATION, NEUTRON STRUCTURAL STUDY AND CHARACTERIZATION OF BANBO3 - A PAULI-LIKE METALLIC PEROVSKITE

被引：51

作者：

CASAIS, MT ^{[1
]}

ALONSO, JA ^{[1
]}

RASINES, I ^{[1
]}

HIDALGO, MA ^{[1
]}

机构：

[1] UNIV ALCALA DE HENARES,FAC CIENCIAS,DEPT FIS,E-28871 ALCALA DE HENARES,SPAIN

来源：

MATERIALS RESEARCH BULLETIN | 1995年 / 30卷 / 02期

关键词：

BARIUM; NIOBIUM; OXIDE; PEROVSKITE;

D O I：

10.1016/0025-5408(94)00116-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The cubic perovskite BaNbO3 has been prepared in sealed ampoules from mixtures of BaO, NbO2 and Nb, in different ratios. The Ba and O contents, determined by thermogravimetry, X-ray and neutron diffraction, are always close to the stoichiometric values. Resistivity and magnetic measurements indicate that BaNbO3 behaves as a metal, showing a high room-temperature resistivity and a Pauli-like behavior. This suggests an important electronic delocalization in this system. The enhanced value of the Pauli susceptibility indicates a relatively strong correlation among the 4d electrons in narrow pi* conduction bands of T2g parentage.

引用

页码：201 / 208

页数：8

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