N S Gajbhiye and Sayan Bhattacharyya 2005 Nanotechnology 16 2012 doi:10.1088/0957-4484/16/10/005
N S Gajbhiye1,2,3 and Sayan Bhattacharyya1
Show affiliationsε-Fe3N–GaN core–shell nanowires are synthesized by the wet chemical route and by nitridation of the Fe–Ga-oxide nanowires in flowing NH3 (g). The encapsulation by the GaN shell protects the ε-Fe3N core and spin-glass-like cooperative ordering is observed at low temperatures. Magnetic disorder occurs at the ε-Fe3N–GaN interface, giving rise to the spin-glass-like state below 50 K because of the presence of anti-ferromagnetic (AF) mixed oxynitrides and ferromagnetic (FM) ε-Fe3N nitride and the random distribution of ε-Fe3N in the interface region. The spin-glass-like ordering is probed by relaxation and ac susceptibility experiments.
75.75.+a Magnetic properties of nanostructures
75.70.Cn Magnetic properties of interfaces (multilayers, superlattices, heterostructures)
Issue 10 (October 2005)
Received 8 April 2005, in final form 5 June 2005
Published 3 August 2005
N S Gajbhiye and Sayan Bhattacharyya 2005 Nanotechnology 16 2012
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