Partial frustration of magnetic order in synthetic angelellite Fe4As2O11

Jon P.  Wright; Abbie McLaughlin; J P  Attfield

doi:10.1039/B005350N

Partial frustration of magnetic order in synthetic angelellite Fe4As2O11

Jon P. Wright, Abbie McLaughlin, J P Attfield

Chemistry

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

7 Citations (Scopus)

Abstract

The antiferromagnetic structure of Fe4As2O11 has been solved from neutron powder diffraction data below the Neel temperature of 159 K. A 2a x b x c magnetic supercell is adopted and the two crystallographically distinct Fe3+ sites order with different critical exponents and with saturated magnetic moments of 3.34(2) and 4.37(2) mu(B). The large difference between these magnetic moments reflects differing degrees of frustration at the two sites. Structural refinement using high resolution powder neutron diffraction data confirms the structural model previously reported and no evidence for the presence of an OH group associated with a very short Fe-O distance of 1.76(2) Angstrom is found.

Original language	English
Pages (from-to)	3663-3668
Number of pages	6
Journal	Journal of the Chemical Society, Dalton Transactions
Issue number	20
DOIs	https://doi.org/10.1039/B005350N
Publication status	Published - 2000

Keywords

FEASO4

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title = "Partial frustration of magnetic order in synthetic angelellite Fe4As2O11",

abstract = "The antiferromagnetic structure of Fe4As2O11 has been solved from neutron powder diffraction data below the Neel temperature of 159 K. A 2a x b x c magnetic supercell is adopted and the two crystallographically distinct Fe3+ sites order with different critical exponents and with saturated magnetic moments of 3.34(2) and 4.37(2) mu(B). The large difference between these magnetic moments reflects differing degrees of frustration at the two sites. Structural refinement using high resolution powder neutron diffraction data confirms the structural model previously reported and no evidence for the presence of an OH group associated with a very short Fe-O distance of 1.76(2) Angstrom is found.",

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T1 - Partial frustration of magnetic order in synthetic angelellite Fe4As2O11

AU - Wright, Jon P.

AU - McLaughlin, Abbie

AU - Attfield, J P

PY - 2000

Y1 - 2000

N2 - The antiferromagnetic structure of Fe4As2O11 has been solved from neutron powder diffraction data below the Neel temperature of 159 K. A 2a x b x c magnetic supercell is adopted and the two crystallographically distinct Fe3+ sites order with different critical exponents and with saturated magnetic moments of 3.34(2) and 4.37(2) mu(B). The large difference between these magnetic moments reflects differing degrees of frustration at the two sites. Structural refinement using high resolution powder neutron diffraction data confirms the structural model previously reported and no evidence for the presence of an OH group associated with a very short Fe-O distance of 1.76(2) Angstrom is found.

AB - The antiferromagnetic structure of Fe4As2O11 has been solved from neutron powder diffraction data below the Neel temperature of 159 K. A 2a x b x c magnetic supercell is adopted and the two crystallographically distinct Fe3+ sites order with different critical exponents and with saturated magnetic moments of 3.34(2) and 4.37(2) mu(B). The large difference between these magnetic moments reflects differing degrees of frustration at the two sites. Structural refinement using high resolution powder neutron diffraction data confirms the structural model previously reported and no evidence for the presence of an OH group associated with a very short Fe-O distance of 1.76(2) Angstrom is found.

KW - FEASO4

U2 - 10.1039/B005350N

DO - 10.1039/B005350N

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SP - 3663

EP - 3668

JO - Journal of the Chemical Society, Dalton Transactions

JF - Journal of the Chemical Society, Dalton Transactions

IS - 20

ER -

Partial frustration of magnetic order in synthetic angelellite Fe4As2O11

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Keywords

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