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Titolo:
Anisotropy compensation and spin reorientation in Tb1-xDyx(Fe0.8Co0.2)(2)
Autore:
Guo, ZJ; Zhang, ZD; Wang, BW; Zhao, XG; Geng, DY; Liu, W;
Indirizzi:
Acad Sinica, Inst Met Res, Int Ctr Mat Phys, New Delhi 110016, India Acad Sinica New Delhi India 110016 Ctr Mat Phys, New Delhi 110016, India
Titolo Testata:
JOURNAL OF PHYSICS D-APPLIED PHYSICS
fascicolo: 6, volume: 34, anno: 2001,
pagine: 884 - 888
SICI:
0022-3727(20010321)34:6<884:ACASRI>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
9
Recensione:
Indirizzi per estratti:
Indirizzo: Guo, ZJ Acad Sinica, Inst Met Res, Int Ctr Mat Phys, 72 Wenhua Rd, New Delhi 110016, India Acad Sinica 72 Wenhua Rd New Delhi India 110016 lhi 110016, India
Citazione:
Z.J. Guo et al., "Anisotropy compensation and spin reorientation in Tb1-xDyx(Fe0.8Co0.2)(2)", J PHYS D, 34(6), 2001, pp. 884-888

Abstract

Structure, magnetic properties, magnetostriction and anisotropy compensation of Tb1-xDyx(Fe0.8Co0.2)(2) (0 less than or equal to x less than or equalto 1) have been investigated by means of x-ray diffraction, ac initial susceptibility, SQUID magnetometery, and a standard strain technique. The x-ray diffraction results show that all samples crystallize in a C15 MgCu2-typecompound with a Laves phase cubic structure. The lattice parameter as wellas the Curie temperature almost linearly decreases with increasing Dy content. The spin reorientation transition occurs at low temperatures when x < 0.4, due to the substitution of Co for Fe. The spontaneous magnetostriction<lambda>(111) decreases from 2460 ppm for Tb(Fe0.8Co0.2)(2) to 1900 ppm for Tb0.4Dy0.6(Fe0.8Co0.2)(2) When 0.6 < x <less than or equal to> 1, the splitting of the (440) peaks almost disappears, which indicates that the composition for anisotropy compensation is shifted to the Tb-rich side compared with Terfenol-D. The polycrystalline magnetostriction exhibits similar behaviour to that of hill. The phase diagram for different spin configurations has been given for Tb1-xDyx(Fe0.8Co0.2)(2) according to the experimental results.

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Documento generato il 27/09/20 alle ore 06:15:13