TDPAC Study of the In2Se3 Crystal Structure.

reportActive / Technical Report | Accession Number: ADA104729 | Open PDF

Abstract:

The time-differential perturbed angular correlation TDPAC technique has been used to investigate the temperature dependence of the electric field gradient EFG at Cd impurities in the semiconducting compound In2Se3. Between room temperature and the melting point, four different phases could be observed. Most crystal structures which have been proposed for the alpha and beta phases are shown to be incorrect. The beta prime phase 550-720 C has not been reported previously. The data suggests that the beta phase may be a Peierls distortion of the beta prime phase. The EFG in the alpha phase is well described by a simple point charge model suggesting that the electronic part of the EFG is alpha - In2Se3 is small.

Author(s):
Krusch, Karl ; Gardner, John A.
Author Organization(s):
OREGON STATE UNIV CORVALLIS DEPT OF PHYSICS
Descriptive Note:
Technical rept.,
Pagination:
0025

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-3
Contract/Grant Number(s):
N00014-79-C-0668
 Subject Terms
Joint Capability Areas:
JCA_1_Force Support; JCA_1.2_Force Preparation; JCA_1.2.3_Educating; JCA_6.3.3_Spectrum Management; JCA_5_Command and Control; JCA_6.3_Net Management; JCA_6_Net Centric; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_4.6_Engineering
Modernization Areas:
Microelectronics
Communities of Interest:
C4I
Descriptor(s):
*CRYSTAL STRUCTURE, *PHASE STUDIES, *SELENIDES, *INDIUM COMPOUNDS, MEASUREMENT, PHASE TRANSFORMATIONS, ELECTRIC FIELDS, SEMICONDUCTORS, IMPURITIES, CADMIUM, GRADIENTS
Field(s)/Group(s):
Crystallography
Keyword(s):
TDPAC(Time Differential Perturbed Angular Correlation), Electric field gradients, Indium selenides, WUNR056721
Report Date:
1981 Aug 17