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Titolo:
Structural and magnetic properties of Sm-2(Fe1-xTix)(17) (x=0-0.1) alloys prepared by hydrogenation processes and their nitrides
Autore:
Zhao, XG; Zhang, ZD; Sun, XK; Liu, W; Guo, ZJ; Xiao, QF; Geng, DY;
Indirizzi:
Acad Sinica, Inst Met Res, Shenyang 110015, Peoples R China Acad Sinica Shenyang Peoples R China 110015 yang 110015, Peoples R China Acad Sinica, Int Ctr Mat Phys, Shenyang 110015, Peoples R China Acad Sinica Shenyang Peoples R China 110015 yang 110015, Peoples R China
Titolo Testata:
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
fascicolo: 3, volume: 208, anno: 2000,
pagine: 231 - 238
SICI:
0304-8853(200001)208:3<231:SAMPOS>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
SM-FE-N; PHASE;
Keywords:
hydrogenation; nitrogenation; structures; magnetic properties;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Zhao, XG Acad Sinica, Inst Met Res, Shenyang 110015, Peoples R China Acad Sinica Shenyang Peoples R China 110015 15, Peoples R China
Citazione:
X.G. Zhao et al., "Structural and magnetic properties of Sm-2(Fe1-xTix)(17) (x=0-0.1) alloys prepared by hydrogenation processes and their nitrides", J MAGN MAGN, 208(3), 2000, pp. 231-238

Abstract

Sm-2(Fe1-xTix)(17) alloys (x = 0, 0.02, 0.04, 0.06, 0.08, 0.1) were prepared by are-melting, subsequently annealing, hydrogenation and nitrogenation processes. The phase components, structures and magnetic properties involved in the processes have been investigated systematically. The Sm-2(Fe1-xTix)(17) alloys have different main phases including Sm-2(Fe,Ti)(17) with Th2Zn17-type for x = 0-0.04, Sm-3(Fe, Ti)(29) with Nd-3(Fe,Ti)(29)-type for x =0.06, and Sm(Fe,Ti)(12) with ThMn12-type for x = 0.08-0.1. Curie temperature T-c of the main phase of the alloys increases from 125 degrees C for x =0 to 318 degrees C for x = 0.1. The corresponding hydride phases similar to the main phase structures of the parent alloys were formed after a hydrogen decrepitation (HD) process at 300 degrees C. The hydrogenation at 800 degrees C mainly shows a hydrogenation-disproportionation-desorption-recombination (HDDR) process. The HD and nitrogenation resulted in the Curie temperature increments of alloys by 30-150 degrees C and by 140-350 degrees C dueto lattice expansions, respectively. The magnetic properties achieved for the Ti-containing alloys and their nitrides are lower than those of Sm-2 Fe17Ndelta prepared by the same processes of HD and HDDR. (C) 2000 Elsevier Science B.V. All rights reserved.

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Documento generato il 20/09/20 alle ore 01:09:00