Synthesis and Electrical Conductivity of Nanocrystalline Scandium Fluoride

被引：1
|
作者：
Sorokin, N. I. [1 ]
Buchinskaya, I. I. [1 ]
机构：
[1] Russian Acad Sci, Shubnikov Inst Crystallog, Fed Sci Res Ctr Crystallog & Photon, Moscow 119333, Russia
来源：
INORGANIC MATERIALS | 2023年 / 59卷 / 08期
关键词：
scandium fluoride; nanocrystals; ionic conductivity; X-ray powder diffraction; impedance spectroscopy; SOLID ELECTROLYTES R; IONIC-CONDUCTIVITY; LA; ND; TRANSPORT; CHEMISTRY; CERAMICS; POWDERS; RF3; CA;
D O I：
10.1134/S0020168523080150
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Phase-pure ScF3 nanocrystals (ReO3 structure, sp. gr. Pm (3) over barm) with an average grain size of similar to 20 nm and unit-cell parameter a = 4.0054 +/- 0.0002 angstrom were prepared by a mild chemical method (precipitation from aqueous ScCl3 by HF). The nanopowders were cold-pressed into ceramic compacts and their ionic conductivity was measured and determined to be 1.0 x 10(-5) S/cm at 673 K. The activation energy for ion transport in the ceramics is 1.09 +/- 0.05 eV. The electrical conductivity of nanocrystalline ScF3 exceeds that of microcrystalline and single-crystal scandium fluoride by 25 and 250 times, respectively.
引用
收藏
页码：858 / 865
页数：8
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