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Titolo:
Influence of aluminum additions on exchange interaction and magneto striction of Sm0.9Pr0.1Fe2
Autore:
Guo, ZJ; Zhang, ZD; Zhao, XG; Liu, W; Jin, XM; Geng, DY; Liu, JP; Busbridge, SC;
Indirizzi:
Acad Sinica, Inst Met Res, Int Ctr Mat Phys, Shenyang 110015, Peoples R China Acad Sinica Shenyang Peoples R China 110015 yang 110015, Peoples R China Louisiana Tech Univ, Inst Micromfg, Ruston, LA 71272 USA Louisiana Tech Univ Ruston LA USA 71272 st Micromfg, Ruston, LA 71272 USA Univ Brighton, Sch Engn, Brighton BN2 4GJ, E Sussex, England Univ Brighton Brighton E Sussex England BN2 4GJ N2 4GJ, E Sussex, England
Titolo Testata:
IEEE TRANSACTIONS ON MAGNETICS
fascicolo: 4, volume: 37, anno: 2001,
parte:, 1
pagine: 2693 - 2695
SICI:
0018-9464(200107)37:4<2693:IOAAOE>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAGNETOSTRICTION; INTERMETALLICS; ALLOYS;
Keywords:
exchange interaction; intersublattice coupling; magnetostriction; molecular field;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Guo, ZJ Acad Sinica, Inst Met Res, Int Ctr Mat Phys, Shenyang 110015, Peoples R China Acad Sinica Shenyang Peoples R China 110015 015, Peoples R China
Citazione:
Z.J. Guo et al., "Influence of aluminum additions on exchange interaction and magneto striction of Sm0.9Pr0.1Fe2", IEEE MAGNET, 37(4), 2001, pp. 2693-2695

Abstract

Structure, exchange interaction, magnetic properties and magnetostriction of a series of cubic C15 MgCu2-type rare-earth transition-metal (R-T) compounds of Sm0.9Pr0.1 (Fe1-xAlx)(2) (0 less than or equal to x less than or equal to 0.2) have been studied by x-ray diffraction, A. C. initial susceptibility, vibrating samples magnetometer and standard strain technology. The substitution of Al for Fe leads to an expansion of the lattice parameter a by 5.1%. Curie temperature T-c is reduced continuously by replacing Fe with Al, which is ascribed to the decrease of the R-T coupling strength. The intersublattice coupling constant J(RT), molecular field coefficient n(RT), and exchange field B-ex, are evaluated by a molecular field model. The decrease of J(RT) with increasing Al content is related to the decrease of the number of (Sm, Pr)-Fe interacting pairs. Both the magnetostriction constant lambda (111) and the polycrystalline saturation magnetostriction lambda (s) at room temperature decrease with the Al addition, which can be ascribed tothe decrease of the coupling strength.

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Documento generato il 25/09/20 alle ore 22:48:38