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Titolo: Structure and magnetostriction of PrxDy1xFe2 and Pr0.4Dy0.6(Fe1yMy)(2) alloys (M = Co, Ni)
Autore: Wang, BW; Guo, ZJ; Zhang, ZD; Zhao, XG; Busbridge, SC;
 Indirizzi:
 Acad Sinica, Inst Met Res, Shenyang 110015, Peoples R China Acad Sinica Shenyang Peoples R China 110015 yang 110015, Peoples R China Shenyang Inst Technol, Dept Mat Engn, Shenyang 110015, Peoples R China Shenyang Inst Technol Shenyang Peoples R China 110015 5, 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 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
 Titolo Testata:
 JOURNAL OF APPLIED PHYSICS
fascicolo: 5,
volume: 85,
anno: 1999,
pagine: 2805  2809
 SICI:
 00218979(19990301)85:5<2805:SAMOPA>2.0.ZU;24
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 ANISOTROPY;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Physical, Chemical & Earth Sciences
 discip_EC
 Citazioni:
 19
 Recensione:
 Indirizzi per estratti:
 Indirizzo: Wang, BW Acad Sinica, Inst Met Res, Shenyang 110015, Peoples R China Acad Sinica Shenyang Peoples R China 110015 15, Peoples R China



 Citazione:
 B.W. Wang et al., "Structure and magnetostriction of PrxDy1xFe2 and Pr0.4Dy0.6(Fe1yMy)(2) alloys (M = Co, Ni)", J APPL PHYS, 85(5), 1999, pp. 28052809
Abstract
The structure, Curie temperature and magnetostriction of PrxDy1xFe2 (0 less than or equal to x less than or equal to 0.5) and Pr0.Dy4(0.6)(Fe1yMy)(2) (0 less than or equal to y less than or equal to 0.6) alloys (M = Co, Ni) have been investigated using optical microscopy, xray diffraction, ac initial susceptibility and standard strain gauge techniques. The matrix of homogenized PrxDy1xFe2 alloys is a cubic Laves phase (Pr, Dy)Fe2 with MgCu2type structure, with a small amount of second phase (Pr, Dy)Fe3 when x less than or equal to 0.2. The amount of (Pr, Dy)Fe3 phase increases with the increase of Pr content, and it becomes the main phase when x = 0.4. When x = 0.5, the matrix is found to be the (Pr, Dy)(2)Fe17 phase coexisting with a small amount of phases (Pr, Dy)Fe2, (Pr, Dy)Fe3 and rareearth rich phases. For Pr0.Dy4(0.6)(Fe1yCoy)(2) alloys, the amount of (Pr, Dy) (Fe, Co)(2) phase increases with increasing Co content and the phase (Pr, Dy)(Fe, Co)(2) becomes the main phase when y = 0.6. However, the substitutionof Ni for Fe up to 60 at % Ni in Pr0.4Dy0.6Fe2 alloys does not favor the formation of the cubic Laves phase (Pr, Dy) (Fe, Ni)(2). The lattice constant of PrxDy1xFe2 alloys decreases with increasing x, whereas the Curie temperature Tc increases. The magnetostriction of PrxDy1xFe2 alloys at room temperature exhibits a peak at x = 0.3. The lattice constant of Dy0.6Pr0.4(Fe1yCoy)(2) alloys decreases slowly with increasing y; Tc shows a peak when y = 0.45, and the room temperature magnetostriction becomes negative whenx > 0.45. The Curie temperature of Dy0.6Pr0.4(Fe1yNiy)(2) alloys decreases with the increase of Ni content. The room temperature magnetostriction ofDy0.6Pr0.4(Fe1yNiy)(2) also becomes negative when x.0.45. (C) 1999 American Institute of Physics. [S00218979(99)048057].
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 13:36:33