Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Structure, magnetic properties, and magnetostriction of (Tb1-xNdx)(Fe0.4Co0.6)(1.9)
Autore:
Guo, ZJ; Busbridge, SC; Wang, BW; Zhang, ZD; Zhao, XG; Geng, DY;
Indirizzi:
Univ Brighton, Sch Engn, Brighton BN2 4GJ, E Sussex, England Univ Brighton Brighton E Sussex England BN2 4GJ N2 4GJ, E Sussex, England 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 APPLIED PHYSICS
fascicolo: 11, volume: 86, anno: 1999,
pagine: 6310 - 6314
SICI:
0021-8979(199912)86:11<6310:SMPAMO>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAGNETOELASTIC PROPERTIES; ALLOYS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Busbridge, SC Univ Brighton, Sch Engn, Brighton BN2 4GJ, E Sussex, EnglandUniv Brighton Brighton E Sussex England BN2 4GJ ex, England
Citazione:
Z.J. Guo et al., "Structure, magnetic properties, and magnetostriction of (Tb1-xNdx)(Fe0.4Co0.6)(1.9)", J APPL PHYS, 86(11), 1999, pp. 6310-6314

Abstract

The structure and magnetostriction of (Tb1-xNdx)(Fe0.4Co0.6)(1.9) (0 < x <1) alloys have been investigated at room temperature and the magnetic properties determined over the temperature range 1.5-300 K. It was found that the matrix of (Tb1-xNdx)(Fe0.4Co0.6)(1.9) is essentially that of a (Tb,Nd) (Fe,Co)(2) phase with a MgCu2-type cubic Laves structure for all values of x. The lattice parameter of the Laves phase increases from 0.7297 to 0.7363 nm as x increases from 0 to 1 and obeys Vegard's law. We have measured the Curie temperature to decrease with increasing x from 667 K for Tb(Fe0.4Co0.6)Fe-1.9 to 454 K for Nd(Fe0.4Co0.6)Fe-1.9. The resultant macroscopic magnetization becomes zero when x = 0.45 at a temperature of 1.5 K. At 300 K, a slightly smaller value of x is found to produce no resultant magnetization,and the spontaneous magnetostriction constant lambda(111) decreases slowlywith increasing Nd content and vanishes abruptly from a value of 1630 x 10(-6) when x > 0.65. The polycrystalline isofield magnetostriction curves exhibit a minimum at x = 0.45 and a peak at x = 0.65. The observed behavior can be explained on the basis of opposing rare-earth Tb and Nd moments and an anisotropy minimum close to x = 0.65. As the temperature is reduced below300 K, the spin reorientation occurs at greater Nd concentrations. (C) 1999 American Institute of Physics. [S0021-8979(99)05423-7].

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 05:32:24