The Changes of Thermal, Dielectric, and Optical Properties at Insertion of Small Concentrations of Ammonium to K3H(SO4)2 Crystals

被引：5
|
作者：
Selezneva, E. V. [1 ]
Makarova, I. P. [1 ]
Grebenev, V. V. [1 ]
Malyshkina, I. A. [2 ]
Komornikov, V. A. [1 ]
Gavrilova, N. D. [2 ]
Chitra, R. [3 ]
Choudhury, R. R. [3 ]
机构：
[1] Russian Acad Sci, Fed Sci Res Ctr Crystallog & Photon, Shubnikov Inst Crystallog, Moscow 119333, Russia
[2] Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119991, Russia
[3] Bhabha Atom Res Ctr, Div Solid State Phys, Bombay 400085, Maharashtra, India
来源：
CRYSTALLOGRAPHY REPORTS | 2018年 / 63卷 / 04期
基金：
俄罗斯基础研究基金会;
关键词：
PHASE-TRANSITIONS; SUBSTITUTION; SYSTEM;
D O I：
10.1134/S1063774518040247
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The structure of (K1-x (NH4) (x) )(3)H(SO4)(2) crystals with a low ammonium concentration and the behavior of their thermal, optical, and dielectric properties in a temperature range of 275-500 K have been investigated to clarify the influence of doping on the phase transition kinetics. An examination of unit-cell parameters of (K1 - x (NH4) (x) )(3)H(SO4)(2) single crystals has confirmed the existence of a superprotonic phase transition at a temperature of ae450K. The conducting properties of single-crystal and polycrystalline samples have been studied.
引用
收藏
页码：553 / 562
页数：10
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