LATTICE DYNAMICS AND IONIC CONDUCTIVITY OF PbF2:6% LiF SUPERIONIC CRYSTALS.

被引：0
|
作者：
Kosacki, I. [1 ]
Hibner, K. [1 ]
Litvinchuk, A.P. [1 ]
Valakh, M.Ya. [1 ]
机构：
[1] Polish Acad of Sciences, warsaw, Pol, Polish Acad of Sciences, warsaw, Pol
来源：
Physica Status Solidi (B) Basic Research | 1986年 / 134卷 / 02期
关键词：
CRYSTALS - Ionic Conduction - LITHIUM COMPOUNDS;
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学科分类号：
摘要：
Temperature studies of lattice dynamics and ionic conductivity, within the temperature range of 100 to 700 K, are performed for PbF//2 and PbF//2. 6% LiF superionic crystals. The doped crystals exhibit a decreased activation energy of the conductivity. A decrease, by about 70 degrees, in the temperature at which the ionic conductivity changes and Raman spectra anomalies occur is observed. It is found that at temperatures significantly lower than that of the superionic state transition, the Raman line form is determined by processes of phonon scattering at thermally excited defects.
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页码：495 / 501
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