Some novel ternary ThMn12-type compounds

Mooij, D.B. de; Buschow, K.H.J.

doi:10.1016/0022-5088(88)90424-9

Cited by 291 publications

(88 citation statements)

References 3 publications

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“…In addition to titanium, V, Cr, Mn, Mo, W, Al, Si serve as stabilizing elements when they substitute the Fe sites. [15][16][17][18][19][20] The concentration range for stability depends on the element (summarized in Fig. 1 of Ref.…”

Section: 12mentioning

confidence: 99%

First-principles study on stability and magnetism of NdFe11M and NdFe11MN for M = Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn

Harashima

Terakura

Kino

et al. 2016

Journal of Applied Physics

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Recently synthesized NdFe 12 N has excellent magnetic properties, while it is thermodynamically unstable. Using first-principles method, we study the effect of substitutional 3d transition metal elements to the mother compound NdFe 12 . We find that Co has positive effect on the stability of the ThMn 12 structure. In contrast with Ti substitution, Co substitution does not reduce the magnetization significantly. The crystal field parameter r 2 A 0 2 is nearly unchanged by Co substitution, and nitrogenation to NdFe 11 Co greatly enhances r 2 A 0 2 . This suggests that Co is a good candidate as a substitutional element for NdFe 12 N.

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Section: 12mentioning

confidence: 99%

First-principles study on stability and magnetism of NdFe11M and NdFe11MN for M = Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn

Harashima

Terakura

Kino

et al. 2016

Journal of Applied Physics

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“…For thermodynamic stability, several substitutional elements are known thus far. Among them, Ti and W have stability region with small x ∼ 1 [4]. Magnetic properties of RFe 11 Ti depends on the rare-earth element R.…”

Section: Introductionmentioning

confidence: 99%

First-Principles Study of Structural and Magnetic Properties of R(Fe,Ti)₁₂ and R(Fe,Ti)₁₂N (R = Nd, Sm, Y)

Harashima

Terakura

Kino³

et al. 2015

Proceedings of Computational Science Workshop 2014 (CSW2014)

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We study the effects of interstitial nitrogenation to magnetic properties of ThMn 12 -type compounds RFe 11 Ti and RFe 12 with R=Nd, Sm, Y by using first-principles technique. The magnetocrystalline anisotropy is estimated from the crystalline-electric-field parameter A 0 2 at the rare-earth site. The change in r 2 A 0 2 by nitrogenation is nearly independent of Ti substitution and has a little dependence on the rare-earth element. NdFe 12 N has considerably larger magnetization and slightly less (but strong enough) uniaxial magnetocrystalline anisotropy compared with NdFe 11 TiN, thereby NdFe 12 N is expected to be a quite high performance permanent magnet material.

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“…This series of intermetallic compounds offers two main advantages as hard magnetic materials; first, a high iron content which yields a high magnetization and, second, a relatively high Curie temperature, especially for the titanium containing compounds. Hence, a good deal of attention has been devoted to these tetragonal compounds [5][6][7] and, because of its excellent properties, SmFe 11 Ti has been identified as potentially the most promising compound. [8][9][10] In general, the insertion of light elements, such as hydrogen, carbon, or nitrogen, into the structure of a rare-earth transition metal intermetallic compound has a dramatic and beneficial effect upon the compound's magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

Magnetic and Mössbauer spectral study of ErFe11Ti and ErFe11TiH

Piquer

Hermann

Grandjean

et al. 2003

Journal of Applied Physics

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X-ray diffraction, isothermal magnetization at 5 and 300 K, ac magnetic susceptibility measurements between 5 and 200 K, and iron-57 Mössbauer spectral measurements between 4.2 and 295 K have been carried out on ErFe 11 Ti and ErFe 11 TiH. Hydrogen uptake has been measured by gravimetric analysis and the insertion of hydrogen into ErFe 11 Ti increases its magnetization, magnetic hyperfine fields, and isomer shifts as a result of the associated lattice expansion. Peaks and steplike changes in both the real and imaginary components of the ac magnetic susceptibility are observed at ϳ50 and 40 K for ErFe 11 Ti and ErFe 11 TiH, respectively, and are assigned to spin-reorientation transitions resulting from the temperature dependence of the sixth-order Stevens crystal-field term of erbium. The Mössbauer spectra have been analyzed with a model which considers both these spin reorientations and the distribution of titanium atoms in the near-neighbor environment of the three crystallographically distinct iron sites. The assignment and the temperature dependencies of the hyperfine fields and isomer shifts are in complete agreement with the WignerSeitz cell analysis of the three iron sites in ErFe 11 Ti and ErFe 11 TiH. The changes in the hyperfine field and isomer shift with the number of titanium near neighbors of the three iron sites are in agreement with the values observed for related titanium-iron intermetallic compounds.

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Some novel ternary ThMn12-type compounds

Cited by 291 publications

References 3 publications

First-principles study on stability and magnetism of NdFe11M and NdFe11MN for M = Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn

First-principles study on stability and magnetism of NdFe11M and NdFe11MN for M = Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn

First-Principles Study of Structural and Magnetic Properties of R(Fe,Ti)₁₂ and R(Fe,Ti)₁₂N (R = Nd, Sm, Y)

Magnetic and Mössbauer spectral study of ErFe11Ti and ErFe11TiH

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Some novel ternary ThMn12-type compounds

Cited by 291 publications

References 3 publications

First-principles study on stability and magnetism of NdFe11M and NdFe11MN for M = Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn

First-principles study on stability and magnetism of NdFe11M and NdFe11MN for M = Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn

First-Principles Study of Structural and Magnetic Properties of R(Fe,Ti)12 and R(Fe,Ti)12N (R = Nd, Sm, Y)

Magnetic and Mössbauer spectral study of ErFe11Ti and ErFe11TiH

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First-Principles Study of Structural and Magnetic Properties of R(Fe,Ti)₁₂ and R(Fe,Ti)₁₂N (R = Nd, Sm, Y)