Synthesis, crystal structure, Mossbauer spectrum, and magnetic susceptibility of new pyrochlore compound CaNdFe1/2Nb3/2O7

被引：2

作者：

Zhao, XH

Ruan, SK

Du, J

Liu, ML

Jin, MZ

Li, XL

Xiong, H

Song, YW

Jia, YQ ^{[1
]}

机构：

[1] E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

[2] Beijing Normal Univ, Dept Chem, Beijing 100875, Peoples R China

[3] Peking Univ, Dept Chem, Beijing 100871, Peoples R China

[4] Jilin Univ, Anal Test Ctr, Changchun 130023, Peoples R China

[5] Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2000年 / 154卷 / 02期

关键词：

pyrochlore compound; wet chemical synthesis; crystal structure; Mossbauer spectrum; magnetic susceptibility;

D O I：

10.1006/jssc.2000.8868

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new pyrochlore compound CaNdFe1/2Nb3/2O7 was synthesized by a wet chemical method. The Rietveld method is used to determine the crystal structure of the compound. The crystal structure of CaNdFe1/2Nb3/2O7 belongs to cubic system with a cubic face-centered cell and a = 1.04138 nm, Mossbauer spectrum of the Fe-57 nucleus in the compound shows the absence of the internal magnetic field in the compound and the low spin state of the trivalent iron ion. The temperature dependence of the magnetic susceptibility indicates the paramagnetic property of CaNdFe1/2Nb3/2O7. There may be translation from the Fe-III ion in a low spin state to the Fe3+ ion in a high spin state in the compound when the temperature is higher. (C) 2000 Academic Press.

引用

页码：483 / 487

页数：5

共 8 条

[1] APPLICATIONS OF MOSSBAUER EFFECT TO SILICATE MINERALOGY .I. IRON SILICATES OF KNOWN CRYSTAL STRUCTURE [J].