Synthesis and characterization of the wide band-gap compound Pr2Te4O11

被引：22

作者：

Ljjaali, I ^{[1
]}

Flaschenriem, C ^{[1
]}

Ibers, JA ^{[1
]}

机构：

[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2003年 / 354卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

synthesis; crystal structure; solid-state compound; praseodyinitun; tellurite;

D O I：

10.1016/S0925-8388(03)00190-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Single crystals of Pr2Te4O11 have been grown through the reaction of Pr6O11 and TeO2 in a CsCl flux at 1123 K. This compound, which is isostructural with Nd2Te4O11 and Ho2Te4O11, crystallizes in space group C2/c of the monoclinic system with four formula units in a cell of dimensions at 153 K of a = 12.6880(6) Angstrom, b =5.2361(3) Angstrom, c = 16.2920(8) Angstrom, beta = 106.052(1)degrees, and V = 1040.17(9) Angstrom(3). The three dimensional structure is made from the interconnection between (2)(infinity)[Pr2O1014-] and (2)(infinity)[Te4O116-] networks. Pr2Te4O11 is a Curie-Weiss paramagnetic with an effective magnetic moment of 3.59(2) mu(B). Optical diffuse reflectance spectroscopy shows typical 4f-4f optical transitions for Pr(III), in addition to a wide band gap of 3.65 eV. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：115 / 119

页数：5

共 32 条

[21] SYNTHESIS, CHARACTERIZATION AND MAGNETIC-PROPERTIES OF LA2TE4O11, NO2TE4O11, SM2TE4O11, EU2TE4O11, GD2TE4O11, HO2TE4O11 [J].