Dielectric properties of (NH4)3H(SO4)2 crystals in room- and high-temperature phases

被引：2

作者：

Sobiestianskas, Ricardas ^{[1
]}

Banys, Joras

Brilingas, Algirdas

Grigas, Jonas

Pawlowski, Antoni

Hilczer, Bozena

机构：

[1] Vilnius State Univ, Fac Phys, LT-10222 Vilnius, Lithuania

[2] Polish Acad Sci, Inst Mol Phys, PL-60179 Poznan, Poland

来源：

FERROELECTRICS | 2007年 / 348卷

关键词：

letovicite; ionic conductivity; dielectric response; distribution of relaxation times;

D O I：

10.1080/00150190701196187

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dielectric/impedance spectra of (NH4)(3)H(SO4)(2) crystal has been studied in room- and high-temperature phases at frequencies up to 3 GHz. The results are analyzed by calculating the distribution function g(tau) of the relaxation times. The splitting of the spectrum into two relaxators on approaching phase transition temperature indicates possible two paths for protons contributing to conductivity in high-temperature phase. Results support idea of involvement in superionic transport of ammonium N(1)H-4 protons along with protons in H-bonds between the apical oxygen atoms of sulfate tetrahedra.

引用

页码：477 / 483

页数：7

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