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Scandium‐Doped AlN 1D Hexagonal Nanoprisms: A Class of Room‐Temperature Ferromagnetic Materials
Author(s) -
Lei Weiwei,
Liu Dan,
Ma Yanming,
Chen Xin,
Tian Fubo,
Zhu Pinwen,
Chen Xiaohui,
Cui Qiliang,
Zou Guangtian
Publication year - 2010
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200905634
Subject(s) - scandium , materials science , ferromagnetism , doping , vacancy defect , condensed matter physics , hexagonal crystal system , magnetic semiconductor , ion , aluminium , crystallography , optoelectronics , metallurgy , chemistry , physics , organic chemistry
Pretty vacancy : The formation energy of Al vacancies in aluminum nitride is decreased by doping with nonmagnetic scandium ions. These vacancies are shown to be the cause of the room‐temperature ferromagnetism in the resulting 1D hexagonal nanoprisms of AlN:Sc (see micrograph), a result that is confirmed by first‐principles calculations. The doping approach provides a new route to dilute magnetic semiconductor materials.