A Comparative Mössbauer Spectral Study of the Electronic and Magnetic Properties of Nd₆Fe₁₃Ag and Nd₆Fe₁₃AgH₁₃

Dimitri Hautot; Gary J. Long; Fernande Grandjean; K. H. J. Buschow

doi:10.1016/j.jallcom.2004.07.017

A Comparative Mössbauer Spectral Study of the Electronic and Magnetic Properties of Nd₆Fe₁₃Ag and Nd₆Fe₁₃AgH₁₃

Dimitri Hautot
, Gary J. Long
, Fernande Grandjean
, K. H. J. Buschow

Chemistry

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

Abstract

The Mössbauer spectra of Nd ₆ Fe ₁₃ Ag and Nd ₆ Fe ₁₃ AgH ₁₃ have been measured between 85 and 295 K and analyzed with a model that takes into account the basal magnetic anisotropy, the iron and hydrogen near-neighbor environments of the five crystallographically and magnetically inequivalent 4d, 16k, 16k', 16l ₁ , and 16l ₂ iron sites in the former and the six crystallographically and magnetically inequivalent 4d, 16k, 16k', 16l ₁ , 16l _2-1 and 16l _2-2 iron sites in the latter, where the additional site results from a predominance of hydrogen as near-neighbors on the iron 16l ₂ site. The increases in hyperfine field and isomer shift observed upon hydrogenation are in agreement with the increase in Wigner-Seitz cell volumes of each site and the changes in the near-neighbor environments.

Original language	American English
Journal	Journal of Alloys and Compounds
Volume	388
DOIs	https://doi.org/10.1016/j.jallcom.2004.07.017
State	Published - Feb 1 2005

Keywords

Hard Magnetic Materials
Hydrogen Storage Materials
Hyperfine Particles
Magnetic Spin Orientation
Crystal Structure
Hydrogenation
Intermetallics
Isomers
Magnetic Anisotropy
Mössbauer Spectroscopy
Neodymium Compounds
X Ray Crystallography
Magnetic Materials

Disciplines

Chemistry

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https://doi.org/10.1016/j.jallcom.2004.07.017

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title = "A Comparative M{\"o}ssbauer Spectral Study of the Electronic and Magnetic Properties of Nd₆Fe₁₃Ag and Nd₆Fe₁₃AgH₁₃",

abstract = " The M{\"o}ssbauer spectra of Nd 6 Fe 13 Ag and Nd 6 Fe 13 AgH 13 have been measured between 85 and 295 K and analyzed with a model that takes into account the basal magnetic anisotropy, the iron and hydrogen near-neighbor environments of the five crystallographically and magnetically inequivalent 4d, 16k, 16k', 16l 1 , and 16l 2 iron sites in the former and the six crystallographically and magnetically inequivalent 4d, 16k, 16k', 16l 1 , 16l 2-1 and 16l 2-2 iron sites in the latter, where the additional site results from a predominance of hydrogen as near-neighbors on the iron 16l 2 site. The increases in hyperfine field and isomer shift observed upon hydrogenation are in agreement with the increase in Wigner-Seitz cell volumes of each site and the changes in the near-neighbor environments.",

keywords = "Hard Magnetic Materials, Hydrogen Storage Materials, Hyperfine Particles, Magnetic Spin Orientation, Crystal Structure, Hydrogenation, Intermetallics, Isomers, Magnetic Anisotropy, M{\"o}ssbauer Spectroscopy, Neodymium Compounds, X Ray Crystallography, Magnetic Materials",

author = "Dimitri Hautot and Long, \{Gary J.\} and Fernande Grandjean and Buschow, \{K. H. J.\}",

year = "2005",

month = feb,

day = "1",

doi = "10.1016/j.jallcom.2004.07.017",

language = "American English",

volume = "388",

journal = "Journal of Alloys and Compounds",

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T1 - A Comparative Mössbauer Spectral Study of the Electronic and Magnetic Properties of Nd₆Fe₁₃Ag and Nd₆Fe₁₃AgH₁₃

AU - Hautot, Dimitri

AU - Long, Gary J.

AU - Grandjean, Fernande

AU - Buschow, K. H. J.

PY - 2005/2/1

Y1 - 2005/2/1

N2 - The Mössbauer spectra of Nd 6 Fe 13 Ag and Nd 6 Fe 13 AgH 13 have been measured between 85 and 295 K and analyzed with a model that takes into account the basal magnetic anisotropy, the iron and hydrogen near-neighbor environments of the five crystallographically and magnetically inequivalent 4d, 16k, 16k', 16l 1 , and 16l 2 iron sites in the former and the six crystallographically and magnetically inequivalent 4d, 16k, 16k', 16l 1 , 16l 2-1 and 16l 2-2 iron sites in the latter, where the additional site results from a predominance of hydrogen as near-neighbors on the iron 16l 2 site. The increases in hyperfine field and isomer shift observed upon hydrogenation are in agreement with the increase in Wigner-Seitz cell volumes of each site and the changes in the near-neighbor environments.

AB - The Mössbauer spectra of Nd 6 Fe 13 Ag and Nd 6 Fe 13 AgH 13 have been measured between 85 and 295 K and analyzed with a model that takes into account the basal magnetic anisotropy, the iron and hydrogen near-neighbor environments of the five crystallographically and magnetically inequivalent 4d, 16k, 16k', 16l 1 , and 16l 2 iron sites in the former and the six crystallographically and magnetically inequivalent 4d, 16k, 16k', 16l 1 , 16l 2-1 and 16l 2-2 iron sites in the latter, where the additional site results from a predominance of hydrogen as near-neighbors on the iron 16l 2 site. The increases in hyperfine field and isomer shift observed upon hydrogenation are in agreement with the increase in Wigner-Seitz cell volumes of each site and the changes in the near-neighbor environments.

KW - Hard Magnetic Materials

KW - Hydrogen Storage Materials

KW - Hyperfine Particles

KW - Magnetic Spin Orientation

KW - Crystal Structure

KW - Hydrogenation

KW - Intermetallics

KW - Isomers

KW - Magnetic Anisotropy

KW - Mössbauer Spectroscopy

KW - Neodymium Compounds

KW - X Ray Crystallography

KW - Magnetic Materials

UR - https://scholarsmine.mst.edu/chem_facwork/886

UR - https://doi.org/10.1016/j.jallcom.2004.07.017

U2 - 10.1016/j.jallcom.2004.07.017

DO - 10.1016/j.jallcom.2004.07.017

M3 - Article

VL - 388

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

A Comparative Mössbauer Spectral Study of the Electronic and Magnetic Properties of Nd₆Fe₁₃Ag and Nd₆Fe₁₃AgH₁₃

Abstract

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