Structure and magnetic properties of RFe10V2Nx compounds

Y. Z. Wang; G. C. Hadjipanayis; A. Kim; D. J. Sellmyer; W. B. Yelon

doi:10.1016/0304-8853(92)90519-T

Structure and magnetic properties of RFe₁₀V₂N_x compounds

Y. Z. Wang, G. C. Hadjipanayis, A. Kim, D. J. Sellmyer, W. B. Yelon

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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Abstract

In this paper a systematic study is undertaken of the structure and magnetic properties of RFe₁₀V₂ nitrides using X-ray diffraction, thermomagnetic analysis, SQUID magnetometry and neutron diffraction. The RFe₁₀V₂N_x compounds were prepared by heat-treating fine powders of single-phase RFe₁₀V₂ alloys in N₂ gas. These studies showed that the interstitial nitrogen atoms expand the crystal lattice of ThMn₁₂-type crystal structure, resulting in a substantial increase of Curie temperature. The average increase of Curie temperature across the series is about 200 K. The absorption of nitrogen also introduces a significant change in the magnetocrystalline anisotropy from "weak uniaxial"-type to "strong uniaxial"-type for NdFe₁₀V₂N_x and from "uniaxial" to "planar" in SmFe₁₀V₂N_x.

Original language	English (US)
Pages (from-to)	1132-1134
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	104-107
Issue number	PART 2
DOIs	https://doi.org/10.1016/0304-8853(92)90519-T
State	Published - Feb 2 1992

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Structure and magnetic properties of RFe10V2Nx compounds",

abstract = "In this paper a systematic study is undertaken of the structure and magnetic properties of RFe10V2 nitrides using X-ray diffraction, thermomagnetic analysis, SQUID magnetometry and neutron diffraction. The RFe10V2Nx compounds were prepared by heat-treating fine powders of single-phase RFe10V2 alloys in N2 gas. These studies showed that the interstitial nitrogen atoms expand the crystal lattice of ThMn12-type crystal structure, resulting in a substantial increase of Curie temperature. The average increase of Curie temperature across the series is about 200 K. The absorption of nitrogen also introduces a significant change in the magnetocrystalline anisotropy from {"}weak uniaxial{"}-type to {"}strong uniaxial{"}-type for NdFe10V2Nx and from {"}uniaxial{"} to {"}planar{"} in SmFe10V2Nx.",

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T1 - Structure and magnetic properties of RFe10V2Nx compounds

AU - Wang, Y. Z.

AU - Hadjipanayis, G. C.

AU - Kim, A.

AU - Sellmyer, D. J.

AU - Yelon, W. B.

PY - 1992/2/2

Y1 - 1992/2/2

N2 - In this paper a systematic study is undertaken of the structure and magnetic properties of RFe10V2 nitrides using X-ray diffraction, thermomagnetic analysis, SQUID magnetometry and neutron diffraction. The RFe10V2Nx compounds were prepared by heat-treating fine powders of single-phase RFe10V2 alloys in N2 gas. These studies showed that the interstitial nitrogen atoms expand the crystal lattice of ThMn12-type crystal structure, resulting in a substantial increase of Curie temperature. The average increase of Curie temperature across the series is about 200 K. The absorption of nitrogen also introduces a significant change in the magnetocrystalline anisotropy from "weak uniaxial"-type to "strong uniaxial"-type for NdFe10V2Nx and from "uniaxial" to "planar" in SmFe10V2Nx.

AB - In this paper a systematic study is undertaken of the structure and magnetic properties of RFe10V2 nitrides using X-ray diffraction, thermomagnetic analysis, SQUID magnetometry and neutron diffraction. The RFe10V2Nx compounds were prepared by heat-treating fine powders of single-phase RFe10V2 alloys in N2 gas. These studies showed that the interstitial nitrogen atoms expand the crystal lattice of ThMn12-type crystal structure, resulting in a substantial increase of Curie temperature. The average increase of Curie temperature across the series is about 200 K. The absorption of nitrogen also introduces a significant change in the magnetocrystalline anisotropy from "weak uniaxial"-type to "strong uniaxial"-type for NdFe10V2Nx and from "uniaxial" to "planar" in SmFe10V2Nx.

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Structure and magnetic properties of RFe₁₀V₂N_x compounds

Abstract

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