Polarized neutron measurement of ''forbidden'' magnon scattering in Pt 3Mn

W. H. Li; C. H. Perry; J. B. Sokoloff; J. W. Lynn; R. M. Nicklow

doi:10.1063/1.334960

Polarized neutron measurement of ''forbidden'' magnon scattering in Pt ₃Mn

W. H. Li, C. H. Perry, J. B. Sokoloff, J. W. Lynn, R. M. Nicklow

Department of Physics

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2 Scopus citations

Abstract

We have employed inelastic scattering of polarized neutrons to study the nature of the magnetic response in the vicinity of the Curie temperature (T _C=493 K) for the intermetallic ferromagnet Pt₃Mn. The measurements were taken on the HB-1 triple-axis spectrometer at ORNL, with a field of 10 kOe applied along the scattering vector Q. For 0.9T_C <T<1.2T_C we observed underdamped magnons not only with the conventional (+) spin-wave polarization but also with the ''forbidden'' (-) polarization, with an intensity difference I(+)-I(-) which is approximately proportional to the magnetization. Both these observations are in agreement with the slowly fluctuating spin-density theory of itinerant ferromagnetism.

Original language	English
Pages (from-to)	3751-3752
Number of pages	2
Journal	Journal of Applied Physics
Volume	57
Issue number	8
DOIs	https://doi.org/10.1063/1.334960
State	Published - 1985

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title = "Polarized neutron measurement of ''forbidden'' magnon scattering in Pt 3Mn",

abstract = "We have employed inelastic scattering of polarized neutrons to study the nature of the magnetic response in the vicinity of the Curie temperature (T C=493 K) for the intermetallic ferromagnet Pt3Mn. The measurements were taken on the HB-1 triple-axis spectrometer at ORNL, with a field of 10 kOe applied along the scattering vector Q. For 0.9TC <T<1.2TC we observed underdamped magnons not only with the conventional (+) spin-wave polarization but also with the ''forbidden'' (-) polarization, with an intensity difference I(+)-I(-) which is approximately proportional to the magnetization. Both these observations are in agreement with the slowly fluctuating spin-density theory of itinerant ferromagnetism.",

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T1 - Polarized neutron measurement of ''forbidden'' magnon scattering in Pt 3Mn

AU - Li, W. H.

AU - Perry, C. H.

AU - Sokoloff, J. B.

AU - Lynn, J. W.

AU - Nicklow, R. M.

PY - 1985

Y1 - 1985

N2 - We have employed inelastic scattering of polarized neutrons to study the nature of the magnetic response in the vicinity of the Curie temperature (T C=493 K) for the intermetallic ferromagnet Pt3Mn. The measurements were taken on the HB-1 triple-axis spectrometer at ORNL, with a field of 10 kOe applied along the scattering vector Q. For 0.9TC <T<1.2TC we observed underdamped magnons not only with the conventional (+) spin-wave polarization but also with the ''forbidden'' (-) polarization, with an intensity difference I(+)-I(-) which is approximately proportional to the magnetization. Both these observations are in agreement with the slowly fluctuating spin-density theory of itinerant ferromagnetism.

AB - We have employed inelastic scattering of polarized neutrons to study the nature of the magnetic response in the vicinity of the Curie temperature (T C=493 K) for the intermetallic ferromagnet Pt3Mn. The measurements were taken on the HB-1 triple-axis spectrometer at ORNL, with a field of 10 kOe applied along the scattering vector Q. For 0.9TC <T<1.2TC we observed underdamped magnons not only with the conventional (+) spin-wave polarization but also with the ''forbidden'' (-) polarization, with an intensity difference I(+)-I(-) which is approximately proportional to the magnetization. Both these observations are in agreement with the slowly fluctuating spin-density theory of itinerant ferromagnetism.

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DO - 10.1063/1.334960

M3 - 期刊論文

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JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 8

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Polarized neutron measurement of ''forbidden'' magnon scattering in Pt 3Mn

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Polarized neutron measurement of ''forbidden'' magnon scattering in Pt ₃Mn