共 48 条
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
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.
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页码:553 / 562
页数:10
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