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Atomistic Understanding of the Ferroelectric Properties of a Wurtzite‐Structure (AlN) n /(ScN) m Superlattice
Author(s) -
Ye Kun Hee,
Han Gyuseung,
Yeu In Won,
Hwang Cheol Seong,
Choi Jung-Hae
Publication year - 2021
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.202170019
Subject(s) - wurtzite crystal structure , superlattice , ferroelectricity , materials science , condensed matter physics , ab initio , polarization (electrochemistry) , crystallography , chemistry , physics , hexagonal crystal system , optoelectronics , dielectric , quantum mechanics
In article number 2100009 , the ab initio calculations by Cheol Seong Hwang, Jung‐Hae Choi, and co‐workers show that wurtzite‐type AlN can have a suitable range of ferroelectric switching barrier ( E a) and spontaneous polarization ( P s) by forming superlattice structures with ScN. The E a is dominated by the local structure instability, while the P s is significantly affected by the structural parameters and the Born effective charge.