Journal ArticleDOI
Magnetic properties of a new series of rare-earth iron nitrides: R2Fe17Ny(y approximately 2.6)
TLDR
A series of interstitial ternary nitrides R2Fe17Ny with 23 <y<29 has been prepared for R=Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Lu and Y as mentioned in this paper.Abstract:
A series of interstitial ternary nitrides R2Fe17Ny with 23<y<29 has been prepared for R=Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Lu and Y The nitrides have structures related to those of Th2Zn17 or Th2Ni17, but the unit cell volumes are 6-7% greater, and the magnetic ordering temperatures some 400 K higher than for the 2:17 parent compounds The Fe-Fe exchange interactions are more than doubled by nitrogenation, whereas the R-Fe exchange interactions are little changed All compounds exhibit easy-plane anisotropy at room temperature, except for Sm2Fe17Ny, which is easy-axisread more
Citations
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Journal ArticleDOI
New developments in hard magnetic materials
TL;DR: A review of the formation, the crystal structure and the magnetic properties of several classes of rare earth based intermetallic compounds that lend themselves as starting materials of permanent magnets is given in this article.
Journal ArticleDOI
Structural and hard magnetic properties of rapidly solidified Sm-Fe-N
TL;DR: In this article, a hexagonal TbCu7-type phase of the binary Sm-Fe alloys has been investigated in the as-quenched state and after nitriding, and the Curie temperature and the saturation polarization of this new phase is 210 °C and 1.25 T, respectively.
Journal ArticleDOI
Gas-phase carbonation of R2Fe17; R=Y, Sm
TL;DR: Carbides of composition R 2 Fe 17 C x (x ≈2; R = Y, Sm) are formed by reaction of a powder of the 2:17 parent alloy in a hydrocarbon gas (methane, acetylene, butane) at around 550°C as discussed by the authors.
Journal ArticleDOI
Structure and magnetic properties of Sm2Fe14Ga3Cx (x=0–2.5) compounds prepared by arc melting
TL;DR: In this article, the substitution of Ga is found to play an important role in the stability of high carbon rare-earth iron compounds with 2:17-type structure, and a novel hard magnetic compound series with composition Sm2Fe14Ga3Cx (x=0, 0.5, 1.0, 1 5, 2.5) was prepared by arc melting.
Journal ArticleDOI
Magnetic properties of a new family of ternary rare‐earth iron nitrides R2Fe17N3−δ (invited)
TL;DR: A series of interstitial ternary nitrides R2Fe17N3−δ has been prepared via a gas solid reaction for R=Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y as discussed by the authors.
References
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Journal ArticleDOI
Intermetallic compounds of rare-earth and 3d transition metals
TL;DR: A survey of the physical properties, composition and crystal structure of intermetallic compounds formed between rare-earth elements and 3D transition elements is given in this article.Apart from binary compounds, the results of pseudobinary series are also considered.
Journal ArticleDOI
Magnetic transition and anomalous thermal expansion in R 2 Fe 17 compounds
D. Givord,R. Lemaire +1 more
TL;DR: In this article, the magnetic properties of R-Fe compounds are determined by the Fe-Fe interatomic distances and the number of Fe nearest neighbors and negative interactions occuring mainly in the substitution zones are deduced.
Journal ArticleDOI
Evidence in rare‐earth (R)–transition metal (M) intermetallics for a systematic dependence of R‐M exchange interactions on the nature of the R atom
TL;DR: In this paper, the molecular field coefficient nRM has been obtained for a number of series of rare earth-transition metal compounds, and the analysis reveals that nRM is not a constant going across a given serie.
Journal ArticleDOI
Easy directions of magnetization in ternary R 2 (Co, Fe) 17 phases
TL;DR: The magnetocrystalline symmetry and the Curie temperature of six families of quasi-binary rare earth-cobalt-iron intermetallic phases were studied in this article.
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