Ionic and electronic transport in In2S3 studied via perturbed angular correlation spectroscopy

被引：0
|
作者：
M. Uhrmacher
L. Aldon
P. Schaaf
H. Metzner
J. Olivier-Fourcade
J.-C. Jumas
机构：
[1] Universität Göttingen,II. Physikalisches Institut
[2] Université de Montpellier 2,Laboratoire de Physico
来源：
Hyperfine Interactions | 1999年 / 120-121卷
关键词：
Angular Correlation; Perturbation Function; 111In Probe; 111Cd Probe; Perturbed Angular Correlation Measurement;
D O I：
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学科分类号：
摘要：
We report on Perturbed Angular Correlation measurements in polycrystalline In2S3 samples in the temperature range from 8 K to 1000 K where two different crystallographic phases β and α occur. As probes, implanted 111In nuclei have been used. The three observed EFGs are attributed to probes residing substitutionally in the different sulfur-octahedra and -tetrahedra of β-In2S3. A strong damping between 150 K and 300 K has been attributed to EFG fluctuations following the 111In(EC)111Cd decay. The α-phase (above 680 K) is characterized by a different dynamical damping of the perturbation functions, caused by mobile In atoms. Therefore, the semiconductor In2S3 shows, in two different temperature ranges, dynamical PAC-spectra which correspond to different types of mobile charge carriers. Since 111In is a self atom in In2S3, this compound is an ideal substance to study the charge transport phenomena by the PAC technique.
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页码：371 / 375
页数：4
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