In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 43, No. 6R ( 2004-06-01), p. 3367-
Abstract:
Curie temperatures are evaluated using first principles in (K,Zr) 2 S and (K,Nb) 2 S diluted magnetic semiconductors which have been designed as half-metallic and transparent materials with a large magnetoptical effect. From the total energy differences between the ferromagnetic state and the spin-glass state, estimations of Curie temperatures are achieved by mapping to the Heisenberg model within the mean-field approximation. According to the results, it is possible to fabricate transparent, half-metallic and room-temperature ferromagnets with Zr- and Nb-concentrations of around 5 at%. Effects of additional carrier doping for (K,Mo) 2 S are also evaluated and it is found that (K,Mo) 2 S with hole doping (∼5 at%) exhibits transparency, is half-metallic and has room-temperature ferromagnetism.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.43.3367
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2004
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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