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Critical scattering of polarized neutrons in the invar Fe 65Ni35 alloy. / Grigoriev, S. V.; Maleyev, S. V.; Okorokov, A. I.; Eckerlebe, H.; Van Dijk, N. H.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 69, No. 13, 134417, 04.2004, p. 134417-1-134417-12.

Research output: Contribution to journalArticlepeer-review

Harvard

Grigoriev, SV, Maleyev, SV, Okorokov, AI, Eckerlebe, H & Van Dijk, NH 2004, 'Critical scattering of polarized neutrons in the invar Fe 65Ni35 alloy', Physical Review B - Condensed Matter and Materials Physics, vol. 69, no. 13, 134417, pp. 134417-1-134417-12. https://doi.org/10.1103/PhysRevB.69.134417

APA

Grigoriev, S. V., Maleyev, S. V., Okorokov, A. I., Eckerlebe, H., & Van Dijk, N. H. (2004). Critical scattering of polarized neutrons in the invar Fe 65Ni35 alloy. Physical Review B - Condensed Matter and Materials Physics, 69(13), 134417-1-134417-12. [134417]. https://doi.org/10.1103/PhysRevB.69.134417

Vancouver

Grigoriev SV, Maleyev SV, Okorokov AI, Eckerlebe H, Van Dijk NH. Critical scattering of polarized neutrons in the invar Fe 65Ni35 alloy. Physical Review B - Condensed Matter and Materials Physics. 2004 Apr;69(13):134417-1-134417-12. 134417. https://doi.org/10.1103/PhysRevB.69.134417

Author

Grigoriev, S. V. ; Maleyev, S. V. ; Okorokov, A. I. ; Eckerlebe, H. ; Van Dijk, N. H. / Critical scattering of polarized neutrons in the invar Fe 65Ni35 alloy. In: Physical Review B - Condensed Matter and Materials Physics. 2004 ; Vol. 69, No. 13. pp. 134417-1-134417-12.

BibTeX

@article{f1f4fb7a38e54dca833cfa4ef4b4fea1,
title = "Critical scattering of polarized neutrons in the invar Fe 65Ni35 alloy",
abstract = "The magnetic phase transition in the invar Fe65Ni35 alloy has been investigated by small-angle polarized-neutron scattering (SAPNS) along with both three-dimensional neutron depolarization and thermal-expansion measurements. The data give evidence for a smeared phase transition. A spatial distribution in the Curie temperature TC is introduced to explain the experimental data. The local TC variations are described by the standard deviation of the transition temperature ΔTC and by the characteristic length of the TC variations, R0. The deduced parameters are (TC) = 485 ± 0.5 K, ΔT C = 12.5 ± 0.2 K, and R0≈300 nm. The critical SAPNS experiment was performed in a special inclined geometry (H → is inclined to the wave vector k→). Two different contributions to the critical scattering were analyzed in the magnetic-field range (1-1000 G) and the temperature range (TC ± 0.1TC) of interest. First, the two-spin-correlation function was studied. Second, the dynamical three-spin-correlation function, or the so-called dynamical chirality of the system, was investigated by extracting the asymmetric part of the polarization-dependent scattering. We distinguish two contributions in the chiral scattering, which stem from the spin waves in the large magnetic inhomogeneities and from the three-spin-correlation function of the critical fluctuations. The data are interpreted in terms of the static and dynamic scaling theory accounting for the concept of local TC variations.",
author = "Grigoriev, {S. V.} and Maleyev, {S. V.} and Okorokov, {A. I.} and H. Eckerlebe and {Van Dijk}, {N. H.}",
year = "2004",
month = apr,
doi = "10.1103/PhysRevB.69.134417",
language = "English",
volume = "69",
pages = "134417--1--134417--12",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "13",

}

RIS

TY - JOUR

T1 - Critical scattering of polarized neutrons in the invar Fe 65Ni35 alloy

AU - Grigoriev, S. V.

AU - Maleyev, S. V.

AU - Okorokov, A. I.

AU - Eckerlebe, H.

AU - Van Dijk, N. H.

PY - 2004/4

Y1 - 2004/4

N2 - The magnetic phase transition in the invar Fe65Ni35 alloy has been investigated by small-angle polarized-neutron scattering (SAPNS) along with both three-dimensional neutron depolarization and thermal-expansion measurements. The data give evidence for a smeared phase transition. A spatial distribution in the Curie temperature TC is introduced to explain the experimental data. The local TC variations are described by the standard deviation of the transition temperature ΔTC and by the characteristic length of the TC variations, R0. The deduced parameters are (TC) = 485 ± 0.5 K, ΔT C = 12.5 ± 0.2 K, and R0≈300 nm. The critical SAPNS experiment was performed in a special inclined geometry (H → is inclined to the wave vector k→). Two different contributions to the critical scattering were analyzed in the magnetic-field range (1-1000 G) and the temperature range (TC ± 0.1TC) of interest. First, the two-spin-correlation function was studied. Second, the dynamical three-spin-correlation function, or the so-called dynamical chirality of the system, was investigated by extracting the asymmetric part of the polarization-dependent scattering. We distinguish two contributions in the chiral scattering, which stem from the spin waves in the large magnetic inhomogeneities and from the three-spin-correlation function of the critical fluctuations. The data are interpreted in terms of the static and dynamic scaling theory accounting for the concept of local TC variations.

AB - The magnetic phase transition in the invar Fe65Ni35 alloy has been investigated by small-angle polarized-neutron scattering (SAPNS) along with both three-dimensional neutron depolarization and thermal-expansion measurements. The data give evidence for a smeared phase transition. A spatial distribution in the Curie temperature TC is introduced to explain the experimental data. The local TC variations are described by the standard deviation of the transition temperature ΔTC and by the characteristic length of the TC variations, R0. The deduced parameters are (TC) = 485 ± 0.5 K, ΔT C = 12.5 ± 0.2 K, and R0≈300 nm. The critical SAPNS experiment was performed in a special inclined geometry (H → is inclined to the wave vector k→). Two different contributions to the critical scattering were analyzed in the magnetic-field range (1-1000 G) and the temperature range (TC ± 0.1TC) of interest. First, the two-spin-correlation function was studied. Second, the dynamical three-spin-correlation function, or the so-called dynamical chirality of the system, was investigated by extracting the asymmetric part of the polarization-dependent scattering. We distinguish two contributions in the chiral scattering, which stem from the spin waves in the large magnetic inhomogeneities and from the three-spin-correlation function of the critical fluctuations. The data are interpreted in terms of the static and dynamic scaling theory accounting for the concept of local TC variations.

UR - http://www.scopus.com/inward/record.url?scp=42749104406&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.69.134417

DO - 10.1103/PhysRevB.69.134417

M3 - Article

AN - SCOPUS:42749104406

VL - 69

SP - 134417-1-134417-12

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 13

M1 - 134417

ER -

ID: 86433070