Magnetic order in single crystals of Na3Co2SbO6 with a honeycomb arrangement of 3d7Co2+ ions

Yan, Jiaqiang; Okamoto, Satoshi; Wu, Yan; Zheng, Qiang; Zhou, Haidong; Cao, Huibo; McGuire, Michael A.

doi:10.1103/PhysRevMaterials.3.074405

Title: Magnetic order in single crystals of Na₃Co₂SbO₆ with a honeycomb arrangement of 3d⁷Co²⁺ ions

Abstract

We have synthesized single crystals of Na₃Co₂SbO₆ and characterized the structure and magnetic order by measuring anisotropic magnetic properties, heat capacity, and x-ray and neutron single crystal diffraction. Magnetic properties and specific heat of polycrystalline Na₃Co₂SbO₆ were also measured for comparison. Na₃Co₂SbO₆ crystallizes in a monoclinic structure (space group C₂/m) with [Co₂SbO₆]^3- layers separated by Na⁺ ions. The temperature dependence of magnetic susceptibility shows significant anisotropic behavior in the whole temperature range 2–350 K investigated in this work. An effective moment of about 5.5μ_B/Co²⁺ from a Curie-Weiss fitting of the magnetic susceptibility is larger than the spin only value and signals significant orbital contribution. Na₃Co₂SbO₆ single crystal undergoes a transition into a long-range antiferromagnetically ordered state below T_N = 5K. Neutron single crystal diffraction confirmed the zigzag magnetic structure with a propagation vector k = (0.5,0.5,0). The ordered moment is found to be 0.9 μ_B at 4 K and align along the crystallographic b axis. Density functional theory calculations suggest that the experimentally observed zigzag order is energetically competing with the Néel order. Furthermore, it is also found that the covalency between Co d and O p is quite strong and competes with the local spin-orbit coupling, suggesting a J_effmore »« less

Authors:

^[1];

^[1]; Zhou, Haidong ^[2];

^[1];

^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Univ. of Tennessee, Knoxville, TN (United States)

Publication Date:: Mon Jul 15 00:00:00 EDT 2019

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1543231

Alternate Identifier(s):: OSTI ID: 1546438

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Materials

Additional Journal Information:: Journal Volume: 3; Journal Issue: 7; Journal ID: ISSN 2475-9953

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Yan, Jiaqiang, Okamoto, Satoshi, Wu, Yan, Zheng, Qiang, Zhou, Haidong, Cao, Huibo, and McGuire, Michael A. Magnetic order in single crystals of Na3Co2SbO6 with a honeycomb arrangement of 3d7Co2+ ions.  United States: N. p., 2019. 
Web.  doi:10.1103/PhysRevMaterials.3.074405.

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                    Yan, Jiaqiang, Okamoto, Satoshi, Wu, Yan, Zheng, Qiang, Zhou, Haidong, Cao, Huibo, & McGuire, Michael A. Magnetic order in single crystals of Na3Co2SbO6 with a honeycomb arrangement of 3d7Co2+ ions.  United States.  https://doi.org/10.1103/PhysRevMaterials.3.074405

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                    Yan, Jiaqiang, Okamoto, Satoshi, Wu, Yan, Zheng, Qiang, Zhou, Haidong, Cao, Huibo, and McGuire, Michael A. Mon .  
"Magnetic order in single crystals of Na3Co2SbO6 with a honeycomb arrangement of 3d7Co2+ ions".  United States.  https://doi.org/10.1103/PhysRevMaterials.3.074405.  https://www.osti.gov/servlets/purl/1543231.

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@article{osti_1543231,

  title        = {Magnetic order in single crystals of Na3Co2SbO6 with a honeycomb arrangement of 3d7Co2+ ions},

  author       = {Yan, Jiaqiang and Okamoto, Satoshi and Wu, Yan and Zheng, Qiang and Zhou, Haidong and Cao, Huibo and McGuire, Michael A.},

  abstractNote = {We have synthesized single crystals of Na3Co2SbO6 and characterized the structure and magnetic order by measuring anisotropic magnetic properties, heat capacity, and x-ray and neutron single crystal diffraction. Magnetic properties and specific heat of polycrystalline Na3Co2SbO6 were also measured for comparison. Na3Co2SbO6 crystallizes in a monoclinic structure (space group C2/m) with [Co2SbO6]3- layers separated by Na+ ions. The temperature dependence of magnetic susceptibility shows significant anisotropic behavior in the whole temperature range 2–350 K investigated in this work. An effective moment of about 5.5μB/Co2+ from a Curie-Weiss fitting of the magnetic susceptibility is larger than the spin only value and signals significant orbital contribution. Na3Co2SbO6 single crystal undergoes a transition into a long-range antiferromagnetically ordered state below TN = 5K. Neutron single crystal diffraction confirmed the zigzag magnetic structure with a propagation vector k = (0.5,0.5,0). The ordered moment is found to be 0.9 μB at 4 K and align along the crystallographic b axis. Density functional theory calculations suggest that the experimentally observed zigzag order is energetically competing with the Néel order. Furthermore, it is also found that the covalency between Co d and O p is quite strong and competes with the local spin-orbit coupling, suggesting a Jeff = 1/2 ground state may not be realized in this compound.},

  doi          = {10.1103/PhysRevMaterials.3.074405},

  journal      = {Physical Review Materials},

  number       = 7,

  volume       = 3,

  place        = {United States},

  year         = {Mon Jul 15 00:00:00 EDT 2019},

  month        = {Mon Jul 15 00:00:00 EDT 2019}

}

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https://doi.org/10.1103/PhysRevMaterials.3.074405

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Cited by: 34 works

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Figures / Tables:

FIG. 1: Crystal structure of Na₃Co₂SbO₆ (a) the honeycomb arrangement of Co ions in ab-plane, and (b) the honeycomb layers are separated by Na layers.

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Works referencing / citing this record:

Weak-field induced nonmagnetic state in a Co-based honeycomb
journal, January 2020

Zhong, Ruidan; Gao, Tong; Ong, Nai Phuan
Science Advances, Vol. 6, Issue 4
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Title: Magnetic order in single crystals of Na3Co2SbO6 with a honeycomb arrangement of 3d7Co2+ ions

Abstract

Citation Formats

Figures / Tables:

Short-range quasistatic order and critical spin correlations in α − Ru 1 − x Ir x Cl 3 journal, July 2018

Generalized Gradient Approximation Made Simple journal, October 1996

Pseudospin exchange interactions in d 7 cobalt compounds: Possible realization of the Kitaev model journal, January 2018

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Gapless Spin Excitations in the Field-Induced Quantum Spin Liquid Phase of α − RuCl 3 journal, December 2017

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Influence of uniaxial single-ion anisotropy on the magnetic and thermal properties of Heisenberg antiferromagnets within unified molecular field theory journal, March 2017

Electronic structure and bonding properties of cobalt oxide in the spinel structure journal, June 2011

Anisotropic g -Factors of Co 2+ Ion in Complex Salts journal, June 1976

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Voltage- and time-dependent valence state transition in cobalt oxide catalysts during the oxygen evolution reaction journal, April 2020

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Title: Magnetic order in single crystals of Na₃Co₂SbO₆ with a honeycomb arrangement of 3d⁷Co²⁺ ions

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Generalized Gradient Approximation Made Simple
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Phase diagram of $α - {RuCl}_{3}$ in an in-plane magnetic field
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Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
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