Large magnetic anisotropy of a decorated spin-chain system K2Co3(MoO4)3(OH)2

Bhakti K. Patel; Feng Ye; W. L.N.C. Liyanage; C. Charlotte Buchanan; Dustin A. Gilbert; Joseph W. Kolis; Liurukara D. Sanjeewa

doi:10.1039/d4dt00203b

Large magnetic anisotropy of a decorated spin-chain system K₂Co₃(MoO₄)₃(OH)₂

Bhakti K. Patel, Feng Ye, W. L.N.C. Liyanage, C. Charlotte Buchanan, Dustin A. Gilbert, Joseph W. Kolis, Liurukara D. Sanjeewa

Single Crystal Diffraction

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

Abstract

The magnetic structure of K₂Co₃(MoO₄)₃(OH)₂ is studied in detail. The material has a half-sawtooth one-dimensional (1-D) structure containing two unique Co²⁺ ions, one in the chain backbone and one on the apex of the sawtooth creating a series of isosceles triangles along the b-axis. These triangles can be a source of magnetic frustration. The ability to grow large single crystals enables detailed magnetic measurements with the crystals oriented in a magnetic field along the respective axes. It has a Curie-Weiss temperature θ_CW of 5.3(2) K with an effective magnetic moment of 4.8(3)μ_B/Co. The material is highly anisotropic with a sharp antiferromagnetic ordering transition at 7 K with a metamagnetic transition at 2 kOe. Neutron diffraction was used to determine the magnetic structure and revealed a magnetic structure with canted spins along the backbone of the chain while spins along the sawtooth caps maintained a colinear orientation, arranging antiferromagnetically relative to the backbone spins. The parallel chains arrange antiferromagnetically relative to each other along the c-axis and ferromagnetically along the a-axis.

Original language	English
Pages (from-to)	6592-6600
Number of pages	9
Journal	Dalton Transactions
Volume	53
Issue number	15
DOIs	https://doi.org/10.1039/d4dt00203b
State	Published - Feb 15 2024

Funding

This research used resources at the Missouri University Research Reactor (MURR). This research used resources at the Spallation Neutron Source, which is a Department of Energy Office of Science User Facilities operated by the Oak Ridge National Laboratory. The work at University of Missouri and Clemson University was supported by awards from the NSF DMR - 2219129. Magnetic measurements taken at the University of Tennessee were supported by the DOE Early Career Program, Award DE-SC0021344. This research used resources at the Missouri University Research Reactor (MURR). This research used resources at the Spallation Neutron Source, which is a Department of Energy Office of Science User Facilities operated by the Oak Ridge National Laboratory. The work at University of Missouri and Clemson University was supported by awards from the NSF DMR \u2013 2219129. Magnetic measurements taken at the University of Tennessee were supported by the DOE Early Career Program, Award DE-SC0021344.

Funders	Funder number
Oak Ridge National Laboratory
University of Missouri
Office of Science
National Science Foundation	DMR – 2219129
U.S. Department of Energy	DE-SC0021344

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title = "Large magnetic anisotropy of a decorated spin-chain system K2Co3(MoO4)3(OH)2",

abstract = "The magnetic structure of K2Co3(MoO4)3(OH)2 is studied in detail. The material has a half-sawtooth one-dimensional (1-D) structure containing two unique Co2+ ions, one in the chain backbone and one on the apex of the sawtooth creating a series of isosceles triangles along the b-axis. These triangles can be a source of magnetic frustration. The ability to grow large single crystals enables detailed magnetic measurements with the crystals oriented in a magnetic field along the respective axes. It has a Curie-Weiss temperature θCW of 5.3(2) K with an effective magnetic moment of 4.8(3)μB/Co. The material is highly anisotropic with a sharp antiferromagnetic ordering transition at 7 K with a metamagnetic transition at 2 kOe. Neutron diffraction was used to determine the magnetic structure and revealed a magnetic structure with canted spins along the backbone of the chain while spins along the sawtooth caps maintained a colinear orientation, arranging antiferromagnetically relative to the backbone spins. The parallel chains arrange antiferromagnetically relative to each other along the c-axis and ferromagnetically along the a-axis.",

author = "Patel, {Bhakti K.} and Feng Ye and Liyanage, {W. L.N.C.} and Buchanan, {C. Charlotte} and Gilbert, {Dustin A.} and Kolis, {Joseph W.} and Sanjeewa, {Liurukara D.}",

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AU - Patel, Bhakti K.

AU - Ye, Feng

AU - Liyanage, W. L.N.C.

AU - Buchanan, C. Charlotte

AU - Gilbert, Dustin A.

AU - Kolis, Joseph W.

AU - Sanjeewa, Liurukara D.

PY - 2024/2/15

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N2 - The magnetic structure of K2Co3(MoO4)3(OH)2 is studied in detail. The material has a half-sawtooth one-dimensional (1-D) structure containing two unique Co2+ ions, one in the chain backbone and one on the apex of the sawtooth creating a series of isosceles triangles along the b-axis. These triangles can be a source of magnetic frustration. The ability to grow large single crystals enables detailed magnetic measurements with the crystals oriented in a magnetic field along the respective axes. It has a Curie-Weiss temperature θCW of 5.3(2) K with an effective magnetic moment of 4.8(3)μB/Co. The material is highly anisotropic with a sharp antiferromagnetic ordering transition at 7 K with a metamagnetic transition at 2 kOe. Neutron diffraction was used to determine the magnetic structure and revealed a magnetic structure with canted spins along the backbone of the chain while spins along the sawtooth caps maintained a colinear orientation, arranging antiferromagnetically relative to the backbone spins. The parallel chains arrange antiferromagnetically relative to each other along the c-axis and ferromagnetically along the a-axis.

AB - The magnetic structure of K2Co3(MoO4)3(OH)2 is studied in detail. The material has a half-sawtooth one-dimensional (1-D) structure containing two unique Co2+ ions, one in the chain backbone and one on the apex of the sawtooth creating a series of isosceles triangles along the b-axis. These triangles can be a source of magnetic frustration. The ability to grow large single crystals enables detailed magnetic measurements with the crystals oriented in a magnetic field along the respective axes. It has a Curie-Weiss temperature θCW of 5.3(2) K with an effective magnetic moment of 4.8(3)μB/Co. The material is highly anisotropic with a sharp antiferromagnetic ordering transition at 7 K with a metamagnetic transition at 2 kOe. Neutron diffraction was used to determine the magnetic structure and revealed a magnetic structure with canted spins along the backbone of the chain while spins along the sawtooth caps maintained a colinear orientation, arranging antiferromagnetically relative to the backbone spins. The parallel chains arrange antiferromagnetically relative to each other along the c-axis and ferromagnetically along the a-axis.

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Large magnetic anisotropy of a decorated spin-chain system K₂Co₃(MoO₄)₃(OH)₂

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