Electrical properties and carrier transport mechanism in V/p-GaN Schottky diode at high temperature range

2015 ◽  
Vol 86 ◽  
pp. 157-165 ◽  
Author(s):  
M. Siva Pratap Reddy ◽  
Aylin Bengi ◽  
V. Rajagopal Reddy ◽  
Ja-Soon Jang
2013 ◽  
Vol 13 (6) ◽  
pp. 975-980 ◽  
Author(s):  
A. Ashok Kumar ◽  
L. Dasaradha Rao ◽  
V. Rajagopal Reddy ◽  
Chel-Jong Choi

2014 ◽  
Vol 55 (5) ◽  
pp. 758-762 ◽  
Author(s):  
V. Janardhanam ◽  
I. Jyothi ◽  
Ji-Hyun Lee ◽  
Jae-Yeon Kim ◽  
V. Rajagopal Reddy ◽  
...  

Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 581
Author(s):  
Abdulhakim A. Almajid

This study is focused on the deformation mechanism and behavior of naturally aged 7010 aluminum alloy at elevated temperatures. The specimens were naturally aged for 60 days to reach a saturated hardness state. High-temperature tensile tests for the naturally aged sample were conducted at different temperatures of 573, 623, 673, and 723 K at various strain rates ranging from 5 × 10−5 to 10−2 s−1. The dependency of stress on the strain rate showed a stress exponent, n, of ~6.5 for the low two temperatures and ~4.5 for the high two temperatures. The apparent activation energies of 290 and 165 kJ/mol are observed at the low, and high-temperature range, respectively. These values of activation energies are greater than those of solute/solvent self-diffusion. The stress exponents, n, and activation energy observed are rather high and this indicates the presence of threshold stress. This behavior occurred as a result of the dislocation interaction with the second phase particles that are existed in the alloy at the testing temperatures. The threshold stress decreases in an exponential manner as temperature increases. The true activation energy was computed by incorporating the threshold stress in the power-law relation between the stress and the strain. The magnitude of the true activation energy, Qt dropped to 234 and 102 kJ/mol at the low and high-temperature range, respectively. These values are close to that of diffusion of Zinc in Aluminum and diffusion of Magnesium in Aluminum, respectively. The Zener–Hollomon parameter for the alloy was developed as a function of effective stress. The data in each region (low and high-temperature region) coalescence in a segment line in each region.


RSC Advances ◽  
2016 ◽  
Vol 6 (50) ◽  
pp. 44838-44842 ◽  
Author(s):  
Abdus Salam Sarkar ◽  
Vishwanath Kalyani ◽  
Kenneth E. Gonsalves ◽  
Chullikkattil P. Pradeep ◽  
Suman Kalyan Pal

We elucidate the carrier transport mechanism in a novel polyoxometalate–polymer (POM–MAPDST) hybrid containing molybdenum transition metal.


1965 ◽  
Vol 8 (10) ◽  
pp. 963-965
Author(s):  
L. M. Golub ◽  
V. E. Finkel'shtein ◽  
E. S. Shpigel'man

2018 ◽  
Vol 228 ◽  
pp. 232-234 ◽  
Author(s):  
Seongjun Kim ◽  
Hong-Ki Kim ◽  
Seonghoon Jeong ◽  
Min-Jae Kang ◽  
Min-Sik Kang ◽  
...  

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