high pressure effect
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Author(s):  
Nelson Nenuwe ◽  
Ezekiel O Agbalagba

This study examines an effect of pressure up to 50 GPa on the elastic and mechanical properties of wurtzite gallium nitride (w-GaN) by using classical potential within the Atomistic Tool Kit (ATK)-force field. The obtained results show that the elastic constants and other related parameters, such as Young’s modulus, shear modulus, bulk modulus, Poisson’s ratio, Pugh’s ratio, Zener anisotropy factor and Kleinman parameter increase monotonically with increase of pressure up to 32 GPa. Beyond this pressure, we observed a non-linear behavior with increase in pressure. This might be attributed to the phase transition in GaN in the pressure range of 33.4 - 44.6 GPa. The results obtained for zero pressure are consistent with both experimental data and the theoretical data shown in references.


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Haidong Sun ◽  
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Optik ◽  
2021 ◽  
Vol 226 ◽  
pp. 165928
Author(s):  
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Božidar Radenković ◽  
Marijana Despotović-Zrakić ◽  
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Dušan Barać

2020 ◽  
Vol 849 ◽  
pp. 155915
Author(s):  
Shiyu Xie ◽  
Xuerui Cheng ◽  
Chuansheng Hu ◽  
Yajun Tao ◽  
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2020 ◽  
Vol 1218 ◽  
pp. 128515
Author(s):  
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S. Dyussembekova ◽  
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