Effect of phase transition on the piezoelectric properties of scandium-alloyed gallium nitride

• Published in: Journal of applied physics Vol. 135; no. 16
• Main Authors: Hirata, Kenji, Ikemoto, Yu, Uehara, Masato, Yamada, Hiroshi, Anggraini, Sri Ayu, Akiyama, Morito
• Format: Journal Article
• Language: English
• Published: Melville American Institute of Physics 28.04.2024
• Subjects: Bonding strength; Boron nitride; Charged particles; Chemical bonds; Crystal structure; Destabilization; Elastic properties; First principles; Gallium nitrides; Microelectromechanical systems; Phase transitions; Piezoelectricity; Scandium; Softening; Wurtzite

In this study, the piezoelectric properties of scandium-alloyed gallium nitride (ScGaN), which is expected to be applied to microelectromechanical systems devices, are evaluated by first-principles calculations. The piezoelectric constant (d33) of GaN is found to increase by up to approximately 30 t...