The Importance of the Wigner-Seitz Cell Volume in Determining the Cobalt Site Occupancy in Nd₂(Fe,⁵⁷Co)₁₄B

Gary J. Long; Fernande Grandjean

doi:10.1016/S0304-8853(96)00289-2

The Importance of the Wigner-Seitz Cell Volume in Determining the Cobalt Site Occupancy in Nd₂(Fe,⁵⁷Co)₁₄B

Chemistry

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Abstract

The cobalt-57 emission Mössbauer spectrum of Nd ₂ (Fe, ⁵⁷ Co) ₁₄ B has been analyzed with a model previously used to study Nd ₂ Fe ₁₄ B and related compounds. The preferential cobalt occupancies in Nd ₂ Fe ₁₄ B, obtained from the relative intensities of the six sextets used to fit the emission spectrum, show a virtually perfect linear correlation with the Wigner-Seitz cell volume of each of the six iron sites. Thus it would appear that the preferential site substitution of cobalt is controlled by the volume of the crystallographic site and the metallic radius of cobalt. This linear correlation provides support for the assignment of the weak sites in the Mössbauer spectrum of Nd ₂ Fe ₁₄ B.

Original language	American English
Journal	Journal of Magnetism and Magnetic Materials
Volume	162
DOIs	https://doi.org/10.1016/S0304-8853(96)00289-2
State	Published - Sep 1 1996

Keywords

Cobalt
Crystallography
Electronic Structure
Emission Spectroscopy
Mathematical Models
Mössbauer Spectroscopy
Neodymium Alloys
Preferential Cobalt Occupancies
Weak Crystallographic Sites
Wigner-Seitz Cell Volume
Permanent Magnets
Ferromagnetic Materials

Disciplines

Chemistry

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https://doi.org/10.1016/S0304-8853(96)00289-2

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@article{8f95c25c68a0416684d9c82a447a5087,

title = "The Importance of the Wigner-Seitz Cell Volume in Determining the Cobalt Site Occupancy in Nd₂(Fe,⁵⁷Co)₁₄B",

abstract = " The cobalt-57 emission M{\"o}ssbauer spectrum of Nd 2 (Fe, 57 Co) 14 B has been analyzed with a model previously used to study Nd 2 Fe 14 B and related compounds. The preferential cobalt occupancies in Nd 2 Fe 14 B, obtained from the relative intensities of the six sextets used to fit the emission spectrum, show a virtually perfect linear correlation with the Wigner-Seitz cell volume of each of the six iron sites. Thus it would appear that the preferential site substitution of cobalt is controlled by the volume of the crystallographic site and the metallic radius of cobalt. This linear correlation provides support for the assignment of the weak sites in the M{\"o}ssbauer spectrum of Nd 2 Fe 14 B.",

keywords = "Cobalt, Crystallography, Electronic Structure, Emission Spectroscopy, Mathematical Models, M{\"o}ssbauer Spectroscopy, Neodymium Alloys, Preferential Cobalt Occupancies, Weak Crystallographic Sites, Wigner-Seitz Cell Volume, Permanent Magnets, Ferromagnetic Materials",

author = "Long, \{Gary J.\} and Fernande Grandjean",

year = "1996",

month = sep,

day = "1",

doi = "10.1016/S0304-8853(96)00289-2",

language = "American English",

volume = "162",

journal = "Journal of Magnetism and Magnetic Materials",

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TY - JOUR

T1 - The Importance of the Wigner-Seitz Cell Volume in Determining the Cobalt Site Occupancy in Nd₂(Fe,⁵⁷Co)₁₄B

AU - Long, Gary J.

AU - Grandjean, Fernande

PY - 1996/9/1

Y1 - 1996/9/1

N2 - The cobalt-57 emission Mössbauer spectrum of Nd 2 (Fe, 57 Co) 14 B has been analyzed with a model previously used to study Nd 2 Fe 14 B and related compounds. The preferential cobalt occupancies in Nd 2 Fe 14 B, obtained from the relative intensities of the six sextets used to fit the emission spectrum, show a virtually perfect linear correlation with the Wigner-Seitz cell volume of each of the six iron sites. Thus it would appear that the preferential site substitution of cobalt is controlled by the volume of the crystallographic site and the metallic radius of cobalt. This linear correlation provides support for the assignment of the weak sites in the Mössbauer spectrum of Nd 2 Fe 14 B.

AB - The cobalt-57 emission Mössbauer spectrum of Nd 2 (Fe, 57 Co) 14 B has been analyzed with a model previously used to study Nd 2 Fe 14 B and related compounds. The preferential cobalt occupancies in Nd 2 Fe 14 B, obtained from the relative intensities of the six sextets used to fit the emission spectrum, show a virtually perfect linear correlation with the Wigner-Seitz cell volume of each of the six iron sites. Thus it would appear that the preferential site substitution of cobalt is controlled by the volume of the crystallographic site and the metallic radius of cobalt. This linear correlation provides support for the assignment of the weak sites in the Mössbauer spectrum of Nd 2 Fe 14 B.

KW - Cobalt

KW - Crystallography

KW - Electronic Structure

KW - Emission Spectroscopy

KW - Mathematical Models

KW - Mössbauer Spectroscopy

KW - Neodymium Alloys

KW - Preferential Cobalt Occupancies

KW - Weak Crystallographic Sites

KW - Wigner-Seitz Cell Volume

KW - Permanent Magnets

KW - Ferromagnetic Materials

UR - https://scholarsmine.mst.edu/chem_facwork/911

UR - https://doi.org/10.1016/S0304-8853(96)00289-2

U2 - 10.1016/S0304-8853(96)00289-2

DO - 10.1016/S0304-8853(96)00289-2

M3 - Article

VL - 162

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

ER -

The Importance of the Wigner-Seitz Cell Volume in Determining the Cobalt Site Occupancy in Nd₂(Fe,⁵⁷Co)₁₄B

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