Phase formation sequence in the Pd-GaAs system
Conference
·
OSTI ID:6047731
The morphological aspects of ternary phase formation during the Pd-GaAs reaction have been studied by application of transmission electron microscopy (TEM) and Rutherford backscattering (RBS) techniques. The TEM images show that the first product phase, ''phase I'', forms during deposition of Pd onto (100) GaAs and exhibits the preferred orientation (0001)/sub I/ approx. // (01 anti 1)/sub GaAs/. In the presence of unreacted Pd, the second phase, ''phase II'', nucleates at large-angle grain boundaries in the phase I film as the annealing temperature increases above approx.250C. Energy dispersive analysis of x-rays and RBS suggest the nominal compositions Pd3GaAs and Pd4GaAs for phases I and II, respectively.
- Research Organization:
- Bell Communications Research, Inc., Murray Hill, NJ (USA); Lawrence Berkeley Lab., CA (USA); Cornell Univ., Ithaca, NY (USA). Dept. of Materials Science and Engineering
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6047731
- Report Number(s):
- LBL-20611; CONF-851217-41; ON: DE86006286
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
ANNEALING
ARSENIC COMPOUNDS
ARSENIDES
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
ELASTIC SCATTERING
ELECTRON MICROSCOPY
ELEMENTS
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
GRAIN BOUNDARIES
HEAT TREATMENTS
HIGH TEMPERATURE
METALS
MICROSCOPY
MICROSTRUCTURE
PALLADIUM
PHASE STUDIES
PLATINUM METALS
PNICTIDES
RUTHERFORD SCATTERING
SCATTERING
TRANSITION ELEMENTS
TRANSMISSION ELECTRON MICROSCOPY
360602* -- Other Materials-- Structure & Phase Studies
ANNEALING
ARSENIC COMPOUNDS
ARSENIDES
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
ELASTIC SCATTERING
ELECTRON MICROSCOPY
ELEMENTS
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
GRAIN BOUNDARIES
HEAT TREATMENTS
HIGH TEMPERATURE
METALS
MICROSCOPY
MICROSTRUCTURE
PALLADIUM
PHASE STUDIES
PLATINUM METALS
PNICTIDES
RUTHERFORD SCATTERING
SCATTERING
TRANSITION ELEMENTS
TRANSMISSION ELECTRON MICROSCOPY