Noncollinear spin structure in F e3+x C o3-x T i2 (x=0,2,3) from neutron diffraction

Haohan Wang, Balamurugan Balasubramanian, Rabindra Pahari, Ralph Skomski, Yaohua Liu, Ashfia Huq, D. J. Sellmyer, Xiaoshan Xu

Research output: Contribution to journalArticle

Abstract

Neutron powder diffraction has been used to investigate the spin structure of the hard-magnetic alloy Fe3+xCo3-xTi2 (x=0,2,3). The materials are produced by rapid quenching from the melt, they possess a hexagonal crystal structure, and they are nanocrystalline with crystallite sizes D of the order of 40 nm. Projections of the magnetic moment onto both the crystalline c axis and the basal plane were observed. The corresponding misalignment angle exhibits a nonlinear decrease with x, which we explain as a micromagnetic effect caused by Fe-Co site disorder. The underlying physics is a special kind of random-anisotropy magnetism that leads to the prediction of 1/D1/4 power-law dependence of the misalignment angle on the crystallite size.

Original languageEnglish (US)
Article number064403
JournalPhysical Review Materials
Volume3
Issue number6
DOIs
StatePublished - Jun 4 2019

Fingerprint

Neutron diffraction
Crystallite size
misalignment
neutron diffraction
Rapid quenching
Neutron powder diffraction
Magnetism
Magnetic moments
Anisotropy
Physics
magnetic moments
Crystal structure
projection
disorders
Crystalline materials
neutrons
anisotropy
crystal structure
physics
predictions

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Wang, H., Balasubramanian, B., Pahari, R., Skomski, R., Liu, Y., Huq, A., ... Xu, X. (2019). Noncollinear spin structure in F e3+x C o3-x T i2 (x=0,2,3) from neutron diffraction. Physical Review Materials, 3(6), [064403]. https://doi.org/10.1103/PhysRevMaterials.3.064403

Noncollinear spin structure in F e3+x C o3-x T i2 (x=0,2,3) from neutron diffraction. / Wang, Haohan; Balasubramanian, Balamurugan; Pahari, Rabindra; Skomski, Ralph; Liu, Yaohua; Huq, Ashfia; Sellmyer, D. J.; Xu, Xiaoshan.

In: Physical Review Materials, Vol. 3, No. 6, 064403, 04.06.2019.

Research output: Contribution to journalArticle

Wang, Haohan ; Balasubramanian, Balamurugan ; Pahari, Rabindra ; Skomski, Ralph ; Liu, Yaohua ; Huq, Ashfia ; Sellmyer, D. J. ; Xu, Xiaoshan. / Noncollinear spin structure in F e3+x C o3-x T i2 (x=0,2,3) from neutron diffraction. In: Physical Review Materials. 2019 ; Vol. 3, No. 6.
@article{0cc0e598ed284113942a5ec4cefc638f,
title = "Noncollinear spin structure in F e3+x C o3-x T i2 (x=0,2,3) from neutron diffraction",
abstract = "Neutron powder diffraction has been used to investigate the spin structure of the hard-magnetic alloy Fe3+xCo3-xTi2 (x=0,2,3). The materials are produced by rapid quenching from the melt, they possess a hexagonal crystal structure, and they are nanocrystalline with crystallite sizes D of the order of 40 nm. Projections of the magnetic moment onto both the crystalline c axis and the basal plane were observed. The corresponding misalignment angle exhibits a nonlinear decrease with x, which we explain as a micromagnetic effect caused by Fe-Co site disorder. The underlying physics is a special kind of random-anisotropy magnetism that leads to the prediction of 1/D1/4 power-law dependence of the misalignment angle on the crystallite size.",
author = "Haohan Wang and Balamurugan Balasubramanian and Rabindra Pahari and Ralph Skomski and Yaohua Liu and Ashfia Huq and Sellmyer, {D. J.} and Xiaoshan Xu",
year = "2019",
month = "6",
day = "4",
doi = "10.1103/PhysRevMaterials.3.064403",
language = "English (US)",
volume = "3",
journal = "Physical Review Materials",
issn = "2475-9953",
publisher = "American Physical Society",
number = "6",

}

TY - JOUR

T1 - Noncollinear spin structure in F e3+x C o3-x T i2 (x=0,2,3) from neutron diffraction

AU - Wang, Haohan

AU - Balasubramanian, Balamurugan

AU - Pahari, Rabindra

AU - Skomski, Ralph

AU - Liu, Yaohua

AU - Huq, Ashfia

AU - Sellmyer, D. J.

AU - Xu, Xiaoshan

PY - 2019/6/4

Y1 - 2019/6/4

N2 - Neutron powder diffraction has been used to investigate the spin structure of the hard-magnetic alloy Fe3+xCo3-xTi2 (x=0,2,3). The materials are produced by rapid quenching from the melt, they possess a hexagonal crystal structure, and they are nanocrystalline with crystallite sizes D of the order of 40 nm. Projections of the magnetic moment onto both the crystalline c axis and the basal plane were observed. The corresponding misalignment angle exhibits a nonlinear decrease with x, which we explain as a micromagnetic effect caused by Fe-Co site disorder. The underlying physics is a special kind of random-anisotropy magnetism that leads to the prediction of 1/D1/4 power-law dependence of the misalignment angle on the crystallite size.

AB - Neutron powder diffraction has been used to investigate the spin structure of the hard-magnetic alloy Fe3+xCo3-xTi2 (x=0,2,3). The materials are produced by rapid quenching from the melt, they possess a hexagonal crystal structure, and they are nanocrystalline with crystallite sizes D of the order of 40 nm. Projections of the magnetic moment onto both the crystalline c axis and the basal plane were observed. The corresponding misalignment angle exhibits a nonlinear decrease with x, which we explain as a micromagnetic effect caused by Fe-Co site disorder. The underlying physics is a special kind of random-anisotropy magnetism that leads to the prediction of 1/D1/4 power-law dependence of the misalignment angle on the crystallite size.

UR - http://www.scopus.com/inward/record.url?scp=85067362748&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85067362748&partnerID=8YFLogxK

U2 - 10.1103/PhysRevMaterials.3.064403

DO - 10.1103/PhysRevMaterials.3.064403

M3 - Article

AN - SCOPUS:85067362748

VL - 3

JO - Physical Review Materials

JF - Physical Review Materials

SN - 2475-9953

IS - 6

M1 - 064403

ER -