Near equiatomic FeCo nanocrystalline alloy embedded in an alumina aerogel matrix: microstructural features and related magnetic properties

CASULA, MARIA FRANCESCA;CONCAS, GIORGIO;CONGIU, FRANCESCO;CORRIAS, ANNA;FALQUI, ANDREA;
2005-01-01

Abstract

FeCo-Al(2)O(3) nanocomposite aerogels were studied by high-resolution electron microscopy, energy filtered transmission electron microscopy, Mossbauer spectroscopy, and measurements of static magnetizations and hysteretic behavior. The combined use of such techniques provided insights on the formation of bcc FeCo nanocrystalline particles inside the alumina matrix, which is promoted by thermal treatment under hydrogen flow of the parent aerogel. Sample characteristics such as alloy composition and crystallinity, influence of the matrix on the structural evolution, and resulting magnetic properties were investigated as a function of the temperature and time of the reduction treatment.
2005
109
50
23888
23895
8
WOS:000234119100017
2-s2.0-30644461548
http://pubs.acs.org/doi/abs/10.1021/jp0546554
PACS numbers: 75.50.Gg, 75.50.Tt, 76.80.+y, 81.07.Bc
Casula, MARIA FRANCESCA; Concas, Giorgio; Congiu, Francesco; Corrias, Anna; Falqui, Andrea; Spano, G.
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
6
none
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