Observation of two length scales of magnetic correlations in the Invar alloy above by means of small-angle neutron scattering and neutron depolarization

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Observation of two length scales of magnetic correlations in the Invar alloy above by means of small-angle neutron scattering and neutron depolarization. / Grigoriev, S.; Maleyev, S.; Okorokov, A.; Runov, V.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 58, No. 6, 1998, p. 3206-3211.

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

BibTeX

@article{242f290338cd441c966f5c1d794ec36c,

title = "Observation of two length scales of magnetic correlations in the Invar alloy above by means of small-angle neutron scattering and neutron depolarization",

abstract = "The magnetic phase transition in the iron-nickel fcc alloy (Formula presented) doped by carbon is investigated. Combining neutron depolarization and small-angle neutron scattering analysis, we demonstrate the coexistence of two length scales of magnetic correlations above (Formula presented) in this intrinsically disordered system. A smaller scale length is attributed to the critical fluctuations. The shape of these fluctuations is well described by the Ornstein-Zernike expression. According to the strong depolarization above (Formula presented) the larger-scale correlations with characteristic length (Formula presented) cannot be described by the Ornstein-Zernike expression and its shape could be roughly modeled by the “squared Ornstein-Zernike” formula: (Formula presented).",

author = "S. Grigoriev and S. Maleyev and A. Okorokov and V. Runov",

year = "1998",

doi = "10.1103/PhysRevB.58.3206",

language = "English",

volume = "58",

pages = "3206--3211",

journal = "Physical Review B-Condensed Matter",

issn = "1098-0121",

publisher = "American Physical Society",

number = "6",

}

RIS

TY - JOUR

T1 - Observation of two length scales of magnetic correlations in the Invar alloy above by means of small-angle neutron scattering and neutron depolarization

AU - Grigoriev, S.

AU - Maleyev, S.

AU - Okorokov, A.

AU - Runov, V.

PY - 1998

Y1 - 1998

N2 - The magnetic phase transition in the iron-nickel fcc alloy (Formula presented) doped by carbon is investigated. Combining neutron depolarization and small-angle neutron scattering analysis, we demonstrate the coexistence of two length scales of magnetic correlations above (Formula presented) in this intrinsically disordered system. A smaller scale length is attributed to the critical fluctuations. The shape of these fluctuations is well described by the Ornstein-Zernike expression. According to the strong depolarization above (Formula presented) the larger-scale correlations with characteristic length (Formula presented) cannot be described by the Ornstein-Zernike expression and its shape could be roughly modeled by the “squared Ornstein-Zernike” formula: (Formula presented).

AB - The magnetic phase transition in the iron-nickel fcc alloy (Formula presented) doped by carbon is investigated. Combining neutron depolarization and small-angle neutron scattering analysis, we demonstrate the coexistence of two length scales of magnetic correlations above (Formula presented) in this intrinsically disordered system. A smaller scale length is attributed to the critical fluctuations. The shape of these fluctuations is well described by the Ornstein-Zernike expression. According to the strong depolarization above (Formula presented) the larger-scale correlations with characteristic length (Formula presented) cannot be described by the Ornstein-Zernike expression and its shape could be roughly modeled by the “squared Ornstein-Zernike” formula: (Formula presented).

UR - http://www.scopus.com/inward/record.url?scp=0000386846&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.58.3206

DO - 10.1103/PhysRevB.58.3206

M3 - Article

AN - SCOPUS:0000386846

VL - 58

SP - 3206

EP - 3211

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 6

ER -

ID: 86438316