Observation of a Large Magnetic Anisotropy and a Field-Induced Magnetic State in SrCo(VO4)(OH): A Structure with a Quasi One-Dimensional Magnetic Chain

Liurukara D. Sanjeewa; V. Ovidiu Garlea; Randy S. Fishman; Michael A. McGuire; Jie Xing; Huibo Cao; Joseph W. Kolis; Athena S. Sefat

doi:10.1021/acs.inorgchem.9b02427

Observation of a Large Magnetic Anisotropy and a Field-Induced Magnetic State in SrCo(VO₄)(OH): A Structure with a Quasi One-Dimensional Magnetic Chain

Liurukara D. Sanjeewa, V. Ovidiu Garlea, Randy S. Fishman, Michael A. McGuire, Jie Xing, Huibo Cao, Joseph W. Kolis, Athena S. Sefat

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Abstract

A new member of the descloizite family, a cobalt vanadate, SrCo(VO₄)(OH), has been synthesized as large single crystals using higherature and high-pressure hydrothermal methods. SrCo(VO₄)(OH) crystallizes in the orthorhombic crystal system in space group P2₁2₁2₁ with the following unit cell parameters: a = 6.0157(2) Å, b = 7.645(2) Å, c = 9.291(3) Å, V = 427.29(2) Å³, and Z = 4. It contains one-dimensional Co-O-Co chains of edge-sharing CoO₆ octahedra along the a-axis connected to each other via VO₄ tetrahedra along the b-axis forming a three-dimensional structure. The magnetic susceptibility of SrCo(VO₄)(OH) indicates an antiferromagnetic transition at 10 K as well as unusually large spin orbit coupling. Single-crystal magnetic measurements in all three main crystallographic directions displayed a significant anisotropy in both temperature- and field-dependent data. Single-crystal neutron diffraction at 4 K was used to characterize the magnetically ordered state. The Co²⁺ magnetic spins are arranged in a staggered configuration along the chain direction, with a canting angle that follows the tipping of the CoO₆ octahedra. The net magnetization along the chain direction, resulting in ferromagnetic coupling of the a-axis spin components in each chain, is compensated by an antiferromagnetic interaction between nearest neighbor chains. A metamagnetic transition appears in the isothermal magnetization data at 2 K along the chain direction, which seems to correspond to a co-alignment of the spin directions of the nearest neighbor chain. We propose a phenomenological spin Hamiltonian that describes the canted spin configuration of the ground state and the metamagnetic transition in SrCo(VO₄)(OH).

Original language	English
Pages (from-to)	1029-1037
Number of pages	9
Journal	Inorganic Chemistry
Volume	59
Issue number	2
DOIs	https://doi.org/10.1021/acs.inorgchem.9b02427
State	Published - Jan 21 2020

Funding

This work was primarily performed at the Oak Ridge National Laboratory Materials Sciences and Technology Division (physical property measurements) and Scientific User Facilities Division (neutron scattering) funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences. The synthesis and single-crystal X-ray diffraction were performed at Clemson University and funded by the National Science Foundation under Grant DMR-1410727.

Funders	Funder number
Oak Ridge National Laboratory
National Science Foundation	1808371, DMR-1410727
U.S. Department of Energy
Office of Science
Basic Energy Sciences
Clemson University

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10.1021/acs.inorgchem.9b02427

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@article{6db87872d8b14b679f16912c7216fe5e,

title = "Observation of a Large Magnetic Anisotropy and a Field-Induced Magnetic State in SrCo(VO4)(OH): A Structure with a Quasi One-Dimensional Magnetic Chain",

abstract = "A new member of the descloizite family, a cobalt vanadate, SrCo(VO4)(OH), has been synthesized as large single crystals using higherature and high-pressure hydrothermal methods. SrCo(VO4)(OH) crystallizes in the orthorhombic crystal system in space group P212121 with the following unit cell parameters: a = 6.0157(2) {\AA}, b = 7.645(2) {\AA}, c = 9.291(3) {\AA}, V = 427.29(2) {\AA}3, and Z = 4. It contains one-dimensional Co-O-Co chains of edge-sharing CoO6 octahedra along the a-axis connected to each other via VO4 tetrahedra along the b-axis forming a three-dimensional structure. The magnetic susceptibility of SrCo(VO4)(OH) indicates an antiferromagnetic transition at 10 K as well as unusually large spin orbit coupling. Single-crystal magnetic measurements in all three main crystallographic directions displayed a significant anisotropy in both temperature- and field-dependent data. Single-crystal neutron diffraction at 4 K was used to characterize the magnetically ordered state. The Co2+ magnetic spins are arranged in a staggered configuration along the chain direction, with a canting angle that follows the tipping of the CoO6 octahedra. The net magnetization along the chain direction, resulting in ferromagnetic coupling of the a-axis spin components in each chain, is compensated by an antiferromagnetic interaction between nearest neighbor chains. A metamagnetic transition appears in the isothermal magnetization data at 2 K along the chain direction, which seems to correspond to a co-alignment of the spin directions of the nearest neighbor chain. We propose a phenomenological spin Hamiltonian that describes the canted spin configuration of the ground state and the metamagnetic transition in SrCo(VO4)(OH).",

author = "Sanjeewa, {Liurukara D.} and Garlea, {V. Ovidiu} and Fishman, {Randy S.} and McGuire, {Michael A.} and Jie Xing and Huibo Cao and Kolis, {Joseph W.} and Sefat, {Athena S.}",

note = "Publisher Copyright: Copyright {\textcopyright} 2019 American Chemical Society.",

year = "2020",

month = jan,

day = "21",

doi = "10.1021/acs.inorgchem.9b02427",

language = "English",

volume = "59",

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journal = "Inorganic Chemistry",

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T1 - Observation of a Large Magnetic Anisotropy and a Field-Induced Magnetic State in SrCo(VO4)(OH)

T2 - A Structure with a Quasi One-Dimensional Magnetic Chain

AU - Sanjeewa, Liurukara D.

AU - Garlea, V. Ovidiu

AU - Fishman, Randy S.

AU - McGuire, Michael A.

AU - Xing, Jie

AU - Cao, Huibo

AU - Kolis, Joseph W.

AU - Sefat, Athena S.

PY - 2020/1/21

Y1 - 2020/1/21

N2 - A new member of the descloizite family, a cobalt vanadate, SrCo(VO4)(OH), has been synthesized as large single crystals using higherature and high-pressure hydrothermal methods. SrCo(VO4)(OH) crystallizes in the orthorhombic crystal system in space group P212121 with the following unit cell parameters: a = 6.0157(2) Å, b = 7.645(2) Å, c = 9.291(3) Å, V = 427.29(2) Å3, and Z = 4. It contains one-dimensional Co-O-Co chains of edge-sharing CoO6 octahedra along the a-axis connected to each other via VO4 tetrahedra along the b-axis forming a three-dimensional structure. The magnetic susceptibility of SrCo(VO4)(OH) indicates an antiferromagnetic transition at 10 K as well as unusually large spin orbit coupling. Single-crystal magnetic measurements in all three main crystallographic directions displayed a significant anisotropy in both temperature- and field-dependent data. Single-crystal neutron diffraction at 4 K was used to characterize the magnetically ordered state. The Co2+ magnetic spins are arranged in a staggered configuration along the chain direction, with a canting angle that follows the tipping of the CoO6 octahedra. The net magnetization along the chain direction, resulting in ferromagnetic coupling of the a-axis spin components in each chain, is compensated by an antiferromagnetic interaction between nearest neighbor chains. A metamagnetic transition appears in the isothermal magnetization data at 2 K along the chain direction, which seems to correspond to a co-alignment of the spin directions of the nearest neighbor chain. We propose a phenomenological spin Hamiltonian that describes the canted spin configuration of the ground state and the metamagnetic transition in SrCo(VO4)(OH).

AB - A new member of the descloizite family, a cobalt vanadate, SrCo(VO4)(OH), has been synthesized as large single crystals using higherature and high-pressure hydrothermal methods. SrCo(VO4)(OH) crystallizes in the orthorhombic crystal system in space group P212121 with the following unit cell parameters: a = 6.0157(2) Å, b = 7.645(2) Å, c = 9.291(3) Å, V = 427.29(2) Å3, and Z = 4. It contains one-dimensional Co-O-Co chains of edge-sharing CoO6 octahedra along the a-axis connected to each other via VO4 tetrahedra along the b-axis forming a three-dimensional structure. The magnetic susceptibility of SrCo(VO4)(OH) indicates an antiferromagnetic transition at 10 K as well as unusually large spin orbit coupling. Single-crystal magnetic measurements in all three main crystallographic directions displayed a significant anisotropy in both temperature- and field-dependent data. Single-crystal neutron diffraction at 4 K was used to characterize the magnetically ordered state. The Co2+ magnetic spins are arranged in a staggered configuration along the chain direction, with a canting angle that follows the tipping of the CoO6 octahedra. The net magnetization along the chain direction, resulting in ferromagnetic coupling of the a-axis spin components in each chain, is compensated by an antiferromagnetic interaction between nearest neighbor chains. A metamagnetic transition appears in the isothermal magnetization data at 2 K along the chain direction, which seems to correspond to a co-alignment of the spin directions of the nearest neighbor chain. We propose a phenomenological spin Hamiltonian that describes the canted spin configuration of the ground state and the metamagnetic transition in SrCo(VO4)(OH).

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U2 - 10.1021/acs.inorgchem.9b02427

DO - 10.1021/acs.inorgchem.9b02427

M3 - Article

C2 - 31845582

AN - SCOPUS:85076962497

SN - 0020-1669

VL - 59

SP - 1029

EP - 1037

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 2

ER -

Observation of a Large Magnetic Anisotropy and a Field-Induced Magnetic State in SrCo(VO₄)(OH): A Structure with a Quasi One-Dimensional Magnetic Chain

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