Neutron Diffraction and Mössbauer Effect Study of Several Nd₂Fe₁₇₋ₓAlₓ Solid Solutions

William B. Yelon; H. Xie; Gary J. Long; Oran Allan Pringle; Fernande Grandjean; K. H. J. Buschow

doi:10.1063/1.353459

Neutron Diffraction and Mössbauer Effect Study of Several Nd₂Fe₁₇₋ₓAlₓ Solid Solutions

William B. Yelon
, H. Xie
, Gary J. Long
, Oran Allan Pringle
, Fernande Grandjean
, K. H. J. Buschow

Missouri University of Science and Technology

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

Abstract

Aluminum-substituted Nd ₂ Fe _17-x Al _x solid solutions with x=2.30, 4.44, 6.13, 8.00, and 9.40 have been studied by neutron diffraction and Mössbauer spectroscopy. A Rietveld analysis of the neutron scattering indicates that the aluminum atoms have a high initial affinity for the 18h site, show a high affinity for the 6c site at high aluminum concentrations, and are absent from the 9d site at all aluminum concentrations. The Mössbauer spectra show a maximum in both the maximum and weighted average hyperfine field for x≅2. This indicates that the lattice expansion which occurs with aluminum substitution is sufficient, at least for small values of x, where magnetic dilution is small, to enhance the intrasublattice coupling between the iron moments, and to increase the magnetic hyperfine fields.

Original language	American English
Journal	Journal of Applied Physics
Volume	73
DOIs	https://doi.org/10.1063/1.353459
State	Published - Nov 1 1994

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Chemistry
Physics

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Neutron Diffraction and M ssbauer Effect Study of Several Nd Fe Final published version, 607 KBLicense: CC BY

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title = "Neutron Diffraction and M{\"o}ssbauer Effect Study of Several Nd₂Fe₁₇₋ₓAlₓ Solid Solutions",

abstract = " Aluminum-substituted Nd 2 Fe 17-x Al x solid solutions with x=2.30, 4.44, 6.13, 8.00, and 9.40 have been studied by neutron diffraction and M{\"o}ssbauer spectroscopy. A Rietveld analysis of the neutron scattering indicates that the aluminum atoms have a high initial affinity for the 18h site, show a high affinity for the 6c site at high aluminum concentrations, and are absent from the 9d site at all aluminum concentrations. The M{\"o}ssbauer spectra show a maximum in both the maximum and weighted average hyperfine field for x≅2. This indicates that the lattice expansion which occurs with aluminum substitution is sufficient, at least for small values of x, where magnetic dilution is small, to enhance the intrasublattice coupling between the iron moments, and to increase the magnetic hyperfine fields.",

author = "Yelon, \{William B.\} and H. Xie and Long, \{Gary J.\} and Pringle, \{Oran Allan\} and Fernande Grandjean and Buschow, \{K. H. J.\}",

year = "1994",

month = nov,

day = "1",

doi = "10.1063/1.353459",

language = "American English",

volume = "73",

journal = "Journal of Applied Physics",

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TY - JOUR

T1 - Neutron Diffraction and Mössbauer Effect Study of Several Nd₂Fe₁₇₋ₓAlₓ Solid Solutions

AU - Yelon, William B.

AU - Xie, H.

AU - Long, Gary J.

AU - Pringle, Oran Allan

AU - Grandjean, Fernande

AU - Buschow, K. H. J.

PY - 1994/11/1

Y1 - 1994/11/1

N2 - Aluminum-substituted Nd 2 Fe 17-x Al x solid solutions with x=2.30, 4.44, 6.13, 8.00, and 9.40 have been studied by neutron diffraction and Mössbauer spectroscopy. A Rietveld analysis of the neutron scattering indicates that the aluminum atoms have a high initial affinity for the 18h site, show a high affinity for the 6c site at high aluminum concentrations, and are absent from the 9d site at all aluminum concentrations. The Mössbauer spectra show a maximum in both the maximum and weighted average hyperfine field for x≅2. This indicates that the lattice expansion which occurs with aluminum substitution is sufficient, at least for small values of x, where magnetic dilution is small, to enhance the intrasublattice coupling between the iron moments, and to increase the magnetic hyperfine fields.

AB - Aluminum-substituted Nd 2 Fe 17-x Al x solid solutions with x=2.30, 4.44, 6.13, 8.00, and 9.40 have been studied by neutron diffraction and Mössbauer spectroscopy. A Rietveld analysis of the neutron scattering indicates that the aluminum atoms have a high initial affinity for the 18h site, show a high affinity for the 6c site at high aluminum concentrations, and are absent from the 9d site at all aluminum concentrations. The Mössbauer spectra show a maximum in both the maximum and weighted average hyperfine field for x≅2. This indicates that the lattice expansion which occurs with aluminum substitution is sufficient, at least for small values of x, where magnetic dilution is small, to enhance the intrasublattice coupling between the iron moments, and to increase the magnetic hyperfine fields.

UR - https://scholarsmine.mst.edu/phys_facwork/184

U2 - 10.1063/1.353459

DO - 10.1063/1.353459

M3 - Article

SN - 1089-7550

VL - 73

JO - Journal of Applied Physics

JF - Journal of Applied Physics

ER -

Neutron Diffraction and Mössbauer Effect Study of Several Nd₂Fe₁₇₋ₓAlₓ Solid Solutions

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