title: Functional complex point-defect structure in a huge-size-mismatch system.
abstract: Cubic boron nitride is a promising system for photonics and optoelectronics. Determining the inclusion mechanisms for dopants with a large size mismatch, such as luminous rare-earth elements, is prerequisite to understanding their functional properties and to effective doping control. Combining evidence from subangstrom resolution scanning transmission electron microscopy, imaging simulations, and first-principles calculations, we show that cationic Ce(3+) single dopants are not located at cationic B sites but rather at anionic N sites surrounded by B-site vacancies.
authors: Institute of Engineering Innovation, University of Tokyo, 2-11-16, Yayoi, Bunkyo, Tokyo 113-8656, Japan.
authors: Ryo
authors: R
authors: Ishikawa
authors: Naoya
authors: N
authors: Shibata
authors: Fumiyasu
authors: F
authors: Oba
authors: Takashi
authors: T
authors: Taniguchi
authors: Scott D
authors: SD
authors: Findlay
authors: Isao
authors: I
authors: Tanaka
authors: Yuichi
authors: Y
authors: Ikuhara