Incommensurate-commensurate magnetic phase transition in double tungstate Li2Co(WO4)2

Xiyu Chen; Ning Ding; Meifeng Liu; Tao Zou; V. Ovidiu Garlea; Jingwen Gong; Fei Liu; Yunlong Xie; Lun Yang; Shuhan Zheng; Xiuzhang Wang; Shuai Dong; T. Charlton; Jun Ming Liu

doi:10.1088/1674-1056/ac3818

Incommensurate-commensurate magnetic phase transition in double tungstate Li₂Co(WO₄)₂

Xiyu Chen, Ning Ding, Meifeng Liu, Tao Zou, V. Ovidiu Garlea, Jingwen Gong, Fei Liu, Yunlong Xie, Lun Yang, Shuhan Zheng, Xiuzhang Wang, Shuai Dong, T. Charlton, Jun Ming Liu

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

1 Scopus citations

Abstract

Magnetic susceptibility, specific heat, and neutron powder diffraction measurements have been performed on polycrystalline Li2Co(WO4)2 samples. Under zero magnetic field, two successive magnetic transitions at TN1 ∼ 9.4 K and TN2 ∼ 7.4 K are observed. The magnetic ordering temperatures gradually decrease as the magnetic field increases. Neutron diffraction reveals that Li2Co(WO4)2 enters an incommensurate magnetic state with a temperature dependent k between TN1 and TN2. The magnetic propagation vector locks-in to a commensurate value k = (1/2,1/4,1/4) below TN2. The antiferromagnetic structure is refined at 1.7 K with Co2+ magnetic moment 2.8(1) μB, consistent with our first-principles calculations.

Original language	English
Article number	047501
Journal	Chinese Physics B
Volume	31
Issue number	4
DOIs	https://doi.org/10.1088/1674-1056/ac3818
State	Published - Mar 2022

Funding

The research at Oak Ridge National Laboratory’s High Flux Isotope Reactor was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy. Most calculations were supported by National Supercomputer Center in Guangzhou (Tianhe II). Project supported by the National Natural Science Foundation of China (Grant Nos. 11834002, 12074111, and 11704109) and the National Key R&D Project of China (Grant No. 2016YFA0300101).

Keywords

LiCo(WO)
incommensurate-commensurate magnetic transition

Access to Document

10.1088/1674-1056/ac3818

Cite this

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title = "Incommensurate-commensurate magnetic phase transition in double tungstate Li2Co(WO4)2",

abstract = "Magnetic susceptibility, specific heat, and neutron powder diffraction measurements have been performed on polycrystalline Li2Co(WO4)2 samples. Under zero magnetic field, two successive magnetic transitions at TN1 ∼ 9.4 K and TN2 ∼ 7.4 K are observed. The magnetic ordering temperatures gradually decrease as the magnetic field increases. Neutron diffraction reveals that Li2Co(WO4)2 enters an incommensurate magnetic state with a temperature dependent k between TN1 and TN2. The magnetic propagation vector locks-in to a commensurate value k = (1/2,1/4,1/4) below TN2. The antiferromagnetic structure is refined at 1.7 K with Co2+ magnetic moment 2.8(1) μB, consistent with our first-principles calculations.",

keywords = "LiCo(WO), incommensurate-commensurate magnetic transition",

author = "Xiyu Chen and Ning Ding and Meifeng Liu and Tao Zou and Garlea, {V. Ovidiu} and Jingwen Gong and Fei Liu and Yunlong Xie and Lun Yang and Shuhan Zheng and Xiuzhang Wang and Shuai Dong and T. Charlton and Liu, {Jun Ming}",

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doi = "10.1088/1674-1056/ac3818",

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T1 - Incommensurate-commensurate magnetic phase transition in double tungstate Li2Co(WO4)2

AU - Chen, Xiyu

AU - Ding, Ning

AU - Liu, Meifeng

AU - Zou, Tao

AU - Garlea, V. Ovidiu

AU - Gong, Jingwen

AU - Liu, Fei

AU - Xie, Yunlong

AU - Yang, Lun

AU - Zheng, Shuhan

AU - Wang, Xiuzhang

AU - Dong, Shuai

AU - Charlton, T.

AU - Liu, Jun Ming

PY - 2022/3

Y1 - 2022/3

N2 - Magnetic susceptibility, specific heat, and neutron powder diffraction measurements have been performed on polycrystalline Li2Co(WO4)2 samples. Under zero magnetic field, two successive magnetic transitions at TN1 ∼ 9.4 K and TN2 ∼ 7.4 K are observed. The magnetic ordering temperatures gradually decrease as the magnetic field increases. Neutron diffraction reveals that Li2Co(WO4)2 enters an incommensurate magnetic state with a temperature dependent k between TN1 and TN2. The magnetic propagation vector locks-in to a commensurate value k = (1/2,1/4,1/4) below TN2. The antiferromagnetic structure is refined at 1.7 K with Co2+ magnetic moment 2.8(1) μB, consistent with our first-principles calculations.

AB - Magnetic susceptibility, specific heat, and neutron powder diffraction measurements have been performed on polycrystalline Li2Co(WO4)2 samples. Under zero magnetic field, two successive magnetic transitions at TN1 ∼ 9.4 K and TN2 ∼ 7.4 K are observed. The magnetic ordering temperatures gradually decrease as the magnetic field increases. Neutron diffraction reveals that Li2Co(WO4)2 enters an incommensurate magnetic state with a temperature dependent k between TN1 and TN2. The magnetic propagation vector locks-in to a commensurate value k = (1/2,1/4,1/4) below TN2. The antiferromagnetic structure is refined at 1.7 K with Co2+ magnetic moment 2.8(1) μB, consistent with our first-principles calculations.

KW - LiCo(WO)

KW - incommensurate-commensurate magnetic transition

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