Room-temperature ferromagnetism with high magnetic moment in Cu-doped AlN single crystal whiskers*
Jiang Liang-Bao, Liu Yu, Zuo Si-Bin, Wang Wen-Jun†
       
(a) Typical SEM image of S1. Inset: the high-magnification SEM image of a single Cu-doped AlN whisker of S1. (b) The HRTEM image of S1. Inset: the SAED pattern of S1. (c) Raman spectra of S1, S2, and undoped AlN whiskers.