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Titolo:
Structure, magnetic properties, and magnetostriction of Sm0.88Dy0.12(Fe1-xMx)(2) (M=Mn, Al) (0 <= x <= 0.2)
Autore:
Guo, ZJ; Busbridge, SC; Wang, BW; Zhang, ZD; Zhao, XG;
Indirizzi:
Acad Sinica, Inst Met Res, Shenyang 110015, Peoples R China Acad Sinica Shenyang Peoples R China 110015 yang 110015, Peoples R China Univ Brighton, Dept Mech & Mfg Engn, Brighton BN2 4GJ, E Sussex, England Univ Brighton Brighton E Sussex England BN2 4GJ N2 4GJ, E Sussex, England Shenyang Inst Technol, Dept Mat Engn, Shenyang 110015, Peoples R China Shenyang Inst Technol Shenyang Peoples R China 110015 5, Peoples R China
Titolo Testata:
JOURNAL OF APPLIED PHYSICS
fascicolo: 9, volume: 85, anno: 1999,
pagine: 6677 - 6681
SICI:
0021-8979(19990501)85:9<6677:SMPAMO>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUBSTITUTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Guo, ZJ Acad Sinica, Inst Met Res, Shenyang 110015, Peoples R China Acad Sinica Shenyang Peoples R China 110015 015, Peoples R China
Citazione:
Z.J. Guo et al., "Structure, magnetic properties, and magnetostriction of Sm0.88Dy0.12(Fe1-xMx)(2) (M=Mn, Al) (0 <= x <= 0.2)", J APPL PHYS, 85(9), 1999, pp. 6677-6681

Abstract

The structure, magnetic properties, and magnetostriction of arc-melted polycrystalline Sm0.88Dy0.12(Fe1-xMx)(2) (M = Mn, Al, 0 less than or equal to x less than or equal to 0.2) alloys were investigated by microscopy, x-ray diffraction, A. C. initial susceptibility, vibrating sample magnetometry, and standard strain gauge techniques. It was found that the matrix consists almost entirely of the MgCu2-type cubic Laves phase, with a small amount ofrare-earth rich phase. The lattice parameter increases approximately linearly with increasing x from 0.740 to 0.750 nm for M = Al. For M = Mn the lattice parameter increases by 0.002 8 nm over the same increase in x. The Curie temperature decreases with increasing x from 670 to 410 and 550 K for M = Al and Mn, respectively. The spontaneous magnetostriction, lambda(111), and polycrystalline magnetostriction, lambda(s), both decrease with increasing Al or Mn substitution for Fe from their initial values of -1452 and -1010 ppm, respectively. Premature disappearance of the splitting of the (440) line and changes in the shape of the magnetostriction curves suggest the substitution of Mn for Fe may produce a change in the anisotropy. No such effects were observed for M = Al. The saturation magnetization, M-S, decreasesapproximately linearly with increasing substitution of Al or Mn. The changes in the magnetization and magnetostriction can be understood on the basisof a decreasing 3d sublattice moment. (C) 1999 American Institute of Physics. [S0021-8979(99)02409-3].

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Documento generato il 30/09/20 alle ore 09:40:53