Structural and magnetic investigations on Cu-doped MnV2O6 compound: Experiment and theory

N. Khamaru; S. De; A. Das; Vijay Singh; Dan Thomas Major; P. Dasgupta; D. Das; S. Chatterjee

doi:10.1016/j.jmmm.2019.165995

Structural and magnetic investigations on Cu-doped MnV₂O₆ compound: Experiment and theory

N. Khamaru, S. De, A. Das, Vijay Singh, Dan Thomas Major, P. Dasgupta, D. Das, S. Chatterjee

Department of Chemistry

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

5 Scopus citations

Abstract

Effects of Cu-doping on the structural and magnetic properties of spin chain compound MnV₂O₆ have been investigated through experimental and theoretical techniques. Significant change in magnetic properties with Cu-doping have been observed. Increasing defects and disorders with Cu-doping which often results in a breaking of infinite chains along b-axis into finite segments play pivotal role towards the decrease in the intrachain exchange interaction. Defects, disorders and hence the chain breaking also affects the magnetic susceptibility of the compound and an increasing Curie tail has been observed. In addition, increasing contribution of orbital moment has been observed with doping. Observation of metamagnetism in both pure and doped compounds is the another key feature observed. First-principles electronic structure calculations have been employed to understand the observed increase in the effective magnetic moment as well as metamagnetism in both pure and doped system.

Original language	English
Article number	165995
Journal	Journal of Magnetism and Magnetic Materials
Volume	497
DOIs	https://doi.org/10.1016/j.jmmm.2019.165995
State	Published - 1 Mar 2020

Bibliographical note

Publisher Copyright:
© 2019 Elsevier B.V.

Funding

NK and SD would like to thank UGC and CSIR, India for their research fellowship respectively. AD would like to thank UGC, India for research fellowship. PD is thankful to DST, India for the financial support through Women Scientist Project (project no: SR/WOS-A/PM-24/2017). Authors would like to thank Department of Science and Technology, India for low temperature and high magnetic field facilities at UGC-DAE Consortium for Scientific Research, Kolkata Centre (project no: IR/S2/PU-06/2006). Authors would also like to thank Mr. Anish Karmahapatra for helping us in carrying out XRD measurements at Saha Institute of Nuclear Physics, India. NK and SD would like to thank UGC and CSIR, India for their research fellowship respectively. AD would like to thank UGC, India for research fellowship. PD is thankful to DST , India for the financial support through Women Scientist Project (project no: SR/WOS-A/PM-24/2017 ). Authors would like to thank Department of Science and Technology, India for low temperature and high magnetic field facilities at UGC-DAE Consortium for Scientific Research, Kolkata Centre (project no: IR/S2/PU-06/2006). Authors would also like to thank Mr. Anish Karmahapatra for helping us in carrying out XRD measurements at Saha Institute of Nuclear Physics, India.

Funders	Funder number
Kolkata Centre	IR/S2/PU-06/2006
Women Scientist Project	SR/WOS-A/PM-24/2017
Department of Science and Technology, Ministry of Science and Technology, India
Council of Scientific and Industrial Research, India
University Grants Committee
Department of Science and Technology, Government of Kerala

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10.1016/j.jmmm.2019.165995

Cite this

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title = "Structural and magnetic investigations on Cu-doped MnV2O6 compound: Experiment and theory",

abstract = "Effects of Cu-doping on the structural and magnetic properties of spin chain compound MnV2O6 have been investigated through experimental and theoretical techniques. Significant change in magnetic properties with Cu-doping have been observed. Increasing defects and disorders with Cu-doping which often results in a breaking of infinite chains along b-axis into finite segments play pivotal role towards the decrease in the intrachain exchange interaction. Defects, disorders and hence the chain breaking also affects the magnetic susceptibility of the compound and an increasing Curie tail has been observed. In addition, increasing contribution of orbital moment has been observed with doping. Observation of metamagnetism in both pure and doped compounds is the another key feature observed. First-principles electronic structure calculations have been employed to understand the observed increase in the effective magnetic moment as well as metamagnetism in both pure and doped system.",

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T2 - Experiment and theory

AU - Khamaru, N.

AU - De, S.

AU - Das, A.

AU - Singh, Vijay

AU - Major, Dan Thomas

AU - Dasgupta, P.

AU - Das, D.

AU - Chatterjee, S.

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AB - Effects of Cu-doping on the structural and magnetic properties of spin chain compound MnV2O6 have been investigated through experimental and theoretical techniques. Significant change in magnetic properties with Cu-doping have been observed. Increasing defects and disorders with Cu-doping which often results in a breaking of infinite chains along b-axis into finite segments play pivotal role towards the decrease in the intrachain exchange interaction. Defects, disorders and hence the chain breaking also affects the magnetic susceptibility of the compound and an increasing Curie tail has been observed. In addition, increasing contribution of orbital moment has been observed with doping. Observation of metamagnetism in both pure and doped compounds is the another key feature observed. First-principles electronic structure calculations have been employed to understand the observed increase in the effective magnetic moment as well as metamagnetism in both pure and doped system.

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