Neutron diffraction study of monoclinic brannerite-type CoV 
                    2O 
                    6

Mikael Markkula; Angel M. Arevalo-Lopez; J. Paul Attfield

doi:10.1016/j.jssc.2012.04.029

Neutron diffraction study of monoclinic brannerite-type CoV ₂O ₆

Mikael Markkula, Angel M. Arevalo-Lopez, J. Paul Attfield^*

^*Corresponding author for this work

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

Abstract / Description of output

A variable-temperature powder neutron diffraction study of the monoclinic brannerite-type CoV2O6 (space group C2/m, a=9.2531(2), b=3.5040(1), c=6.6201(1) Å and β=111.617(1)° at 300 K) is reported. No structural transition is observed down to 4 K, but a magnetostriction accompanying antiferromagnetic order at TN =15 K is discovered. Antiferromagnetic order observed below TN has an a×b×2c supercell in which Co2 moments of magnitude 4.77(4) μB at 4 K lie in the ac plane and are ferromagnetically coupled within chains of edge-sharing CoO6 octahedra parallel to b. Ferromagnetic chains are coupled antiferromagnetically to neighbouring chains in the a and c directions, and a model for the interchain order in the reported 1/3 magnetization plateau region is proposed.

Original language	English
Pages (from-to)	390-393
Number of pages	4
Journal	Journal of Solid State Chemistry
Volume	192
Early online date	3 May 2012
DOIs	https://doi.org/10.1016/j.jssc.2012.04.029
Publication status	Published - 1 Aug 2012

Keywords / Materials (for Non-textual outputs)

Magnetic order
Neutron diffraction
Transition metal oxides

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10.1016/j.jssc.2012.04.029

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@article{3bc7db2022514e378b15c5630380abb6,

title = "Neutron diffraction study of monoclinic brannerite-type CoV 2O 6",

abstract = "A variable-temperature powder neutron diffraction study of the monoclinic brannerite-type CoV2O6 (space group C2/m, a=9.2531(2), b=3.5040(1), c=6.6201(1) {\AA} and β=111.617(1)° at 300 K) is reported. No structural transition is observed down to 4 K, but a magnetostriction accompanying antiferromagnetic order at TN =15 K is discovered. Antiferromagnetic order observed below TN has an a×b×2c supercell in which Co2 moments of magnitude 4.77(4) μB at 4 K lie in the ac plane and are ferromagnetically coupled within chains of edge-sharing CoO6 octahedra parallel to b. Ferromagnetic chains are coupled antiferromagnetically to neighbouring chains in the a and c directions, and a model for the interchain order in the reported 1/3 magnetization plateau region is proposed.",

keywords = "Magnetic order, Neutron diffraction, Transition metal oxides",

author = "Mikael Markkula and Arevalo-Lopez, {Angel M.} and Attfield, {J. Paul}",

year = "2012",

month = aug,

day = "1",

doi = "10.1016/j.jssc.2012.04.029",

language = "English",

volume = "192",

pages = "390--393",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press",

}

TY - JOUR

T1 - Neutron diffraction study of monoclinic brannerite-type CoV 2O 6

AU - Markkula, Mikael

AU - Arevalo-Lopez, Angel M.

AU - Attfield, J. Paul

PY - 2012/8/1

Y1 - 2012/8/1

N2 - A variable-temperature powder neutron diffraction study of the monoclinic brannerite-type CoV2O6 (space group C2/m, a=9.2531(2), b=3.5040(1), c=6.6201(1) Å and β=111.617(1)° at 300 K) is reported. No structural transition is observed down to 4 K, but a magnetostriction accompanying antiferromagnetic order at TN =15 K is discovered. Antiferromagnetic order observed below TN has an a×b×2c supercell in which Co2 moments of magnitude 4.77(4) μB at 4 K lie in the ac plane and are ferromagnetically coupled within chains of edge-sharing CoO6 octahedra parallel to b. Ferromagnetic chains are coupled antiferromagnetically to neighbouring chains in the a and c directions, and a model for the interchain order in the reported 1/3 magnetization plateau region is proposed.

AB - A variable-temperature powder neutron diffraction study of the monoclinic brannerite-type CoV2O6 (space group C2/m, a=9.2531(2), b=3.5040(1), c=6.6201(1) Å and β=111.617(1)° at 300 K) is reported. No structural transition is observed down to 4 K, but a magnetostriction accompanying antiferromagnetic order at TN =15 K is discovered. Antiferromagnetic order observed below TN has an a×b×2c supercell in which Co2 moments of magnitude 4.77(4) μB at 4 K lie in the ac plane and are ferromagnetically coupled within chains of edge-sharing CoO6 octahedra parallel to b. Ferromagnetic chains are coupled antiferromagnetically to neighbouring chains in the a and c directions, and a model for the interchain order in the reported 1/3 magnetization plateau region is proposed.

KW - Magnetic order

KW - Neutron diffraction

KW - Transition metal oxides

UR - http://www.scopus.com/inward/record.url?scp=84864145176&partnerID=8YFLogxK

U2 - 10.1016/j.jssc.2012.04.029

DO - 10.1016/j.jssc.2012.04.029

M3 - Article

AN - SCOPUS:84864145176

SN - 0022-4596

VL - 192

SP - 390

EP - 393

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

ER -

Neutron diffraction study of monoclinic brannerite-type CoV ₂O ₆

Abstract / Description of output

Keywords / Materials (for Non-textual outputs)

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