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

页码：553 / 562

页数：10

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