The (SmZr)Co $_3$ Phase in Sm(CoFeCuZr) $\\rm _ z$ Magnets

Author

de Campos, Marcos F. ; Neiva, A.C. ; Romero, S.A. ; Murakami, R.K. ; Rechenberg, H.R. ; Missell, F.P.

Author_Institution

Inst. Nacional de Metrologia, Normalizacao, e Qualidade Ind.-Inmetro, Duque De Caxias

Volume

42

Issue

11

fYear

2006

Firstpage

3770

Lastpage

3772

Abstract

Detailed microstructural characterization of magnets and homogenized as-cast alloys, which included X-ray diffraction Rietveld analysis, has indicated that the so-called platelet or lamellae phase is (SmZr)₁(CoFeCu)₃ with the PuNi₃ structure and lattice parameters a~0.5 nm and c~2.4 nm. The structural and magnetic properties of the (SmZr)Co₃ phase were investigated. The microstructure shows two phases differing in their Zr/Sm ratio. Magnetization curves for the samples (Sm_0.33Zr _0.67)Co₃, (Sm_0.33Zr_0.67)Co _2.97Fe_0.03, and (Sm_0.67Zr_0.33)Co₃ are consistent with the two-phase microstructure observed. Room temperature coercivity values of these samples are low (ap1 kOe.)

Keywords

X-ray diffraction; cobalt alloys; heat treatment; magnetisation; magnets; plutonium alloys; samarium alloys; zirconium alloys; (SmZr)Co₃; PuNi₃; Rietveld analysis; X-ray diffraction; homogenized as-cast alloys; lamellae phase; magnetization curves; microstructural characterization; platelet phase; Iron; Lattices; Magnetic analysis; Magnetic properties; Magnetization; Magnets; Microstructure; X-ray diffraction; X-ray imaging; Zirconium; (SmZr)Co; Platelet phase; Sm(CoFeCuZr); SmCo magnets;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.884058

Filename

1715690

The (SmZr)Co Phase in Sm(CoFeCuZr) Magnets

de Campos, Marcos F. ; Neiva, A.C. ; Romero, S.A. ; Murakami, R.K. ; Rechenberg, H.R. ; Missell, F.P.

jour

The (SmZr)Co $_3$ Phase in Sm(CoFeCuZr) $\\rm _ z$ Magnets