CALIBRATION OF I(E) INTO V(D)(E) CHARACTERISTICS ON H-SHAPED GUNN DEVICES FOR ALZGA1-XAS ALLOYS UNDER HYDROSTATIC-PRESSURE

Authors
SAXENA AK SHARMA VM SINGH P
Citation
Ak. Saxena et al., CALIBRATION OF I(E) INTO V(D)(E) CHARACTERISTICS ON H-SHAPED GUNN DEVICES FOR ALZGA1-XAS ALLOYS UNDER HYDROSTATIC-PRESSURE, Czechoslovak journal of Physics, 48(1), 1998, pp. 97-101
Citations number
14
Categorie Soggetti
Physics
Journal title
Czechoslovak journal of Physics → ACNP
ISSN journal
00114626
Volume
48
Issue
1
Year of publication
1998
Pages
97 - 101
Database
ISI
SICI code
0011-4626(1998)48:1<97:COIIVC>2.0.ZU;2-F
Abstract
The current-field characteristics for Al-x Ga1-xAs alloys under hydros tatic pressure have been calibrated into velocity-field characteristic s using low field experimental data. The saturated drift velocity for x = 0.29 decreases from 7.8 x 10(6) cm/s at P = 3.5 Kbar to 3.8 x 10(6 ) cm/s at P = 8 Kbar. It is shown that the saturated velocity decrease s from the value of 1.0 x 10(7) cm/s in GaAs to about 3.8 x 10(6) cm/s for x approximate to 0.39. The results should be useful in the design of high field devices of Al-x,Ga1-xAs.