Magnetoelectric CoV2O6—Role of Fe inter-play in Co-based Ising spin chain interactions
CoV2O6, a Brannerite-type material, exists in both monoclinic (α) and triclinic (γ) forms. α- CoV2O6 exhibits quasi-1D ferromagnetic chains of octahedrally-coordinated Co2+ions in the higher spin state. Fe2+ doped α-CoV2O6 (3 mol%) single crystals were synthesized using high temperature melt method....
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2024-02-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/9.0000833 |
| _version_ | 1797278214644563968 |
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| author | Preethi Meher K.R.S. Antoine Maignan D. Pelloquin Ch. Simon |
| author_facet | Preethi Meher K.R.S. Antoine Maignan D. Pelloquin Ch. Simon |
| author_sort | Preethi Meher K.R.S. |
| collection | DOAJ |
| description | CoV2O6, a Brannerite-type material, exists in both monoclinic (α) and triclinic (γ) forms. α- CoV2O6 exhibits quasi-1D ferromagnetic chains of octahedrally-coordinated Co2+ions in the higher spin state. Fe2+ doped α-CoV2O6 (3 mol%) single crystals were synthesized using high temperature melt method. The motivation is to investigate whether disruption of 1D Co2+ ferromagnetic chains by small Fe3+ substitution alters the antiferromagnetic ground state and lead to stronger spin-frustration. In this paper, we report the magnetic and magnetodielectric properties of Fe doped α-CoV2O6 in detail. The strongly anisotropic nature of magnetic and magnetodielectric characteristics were captured well in the data through orientation dependent measurements with H being parallel to a and c axes of the crystal. Relative dielectric permittivity (εr) exhibited sharp peaks coinciding with the plateau edges Hc1 ∼2.2 T and Hc2 ∼4.4 T in the magnetization curves (M-H) for applied H parallel to a-axis. For dielectric measurements under applied H parallel to c-axis, relative dielectric permittivity exhibited sharp peak around Hc2 ∼3.1 T, again coinciding with the M-H behavior. Such closely related magnetic field induced dielectric transitions reflected in both M(H) and εr(H) measurements is a rare phenomenon and representative of strong spin-lattice coupling in this phase. |
| first_indexed | 2024-03-07T16:00:06Z |
| format | Article |
| id | doaj.art-7be6af0c9031417cb8be6d6532fc75f8 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-03-07T16:00:06Z |
| publishDate | 2024-02-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-7be6af0c9031417cb8be6d6532fc75f82024-03-04T21:29:34ZengAIP Publishing LLCAIP Advances2158-32262024-02-01142025313025313-510.1063/9.0000833Magnetoelectric CoV2O6—Role of Fe inter-play in Co-based Ising spin chain interactionsPreethi Meher K.R.S.0Antoine Maignan1D. Pelloquin2Ch. Simon3Department of Materials Science, School of Technology, Central University of Tamil Nadu, Neelakudi Campus, Thiruvarur 610005, IndiaLaboratoire CRISMAT, UMR 6508 CNRS/ENSICAEN, 6 Bd du Marechal Juin, F-14050 CAEN Cedex 4, FranceLaboratoire CRISMAT, UMR 6508 CNRS/ENSICAEN, 6 Bd du Marechal Juin, F-14050 CAEN Cedex 4, FranceLaboratoire CRISMAT, UMR 6508 CNRS/ENSICAEN, 6 Bd du Marechal Juin, F-14050 CAEN Cedex 4, FranceCoV2O6, a Brannerite-type material, exists in both monoclinic (α) and triclinic (γ) forms. α- CoV2O6 exhibits quasi-1D ferromagnetic chains of octahedrally-coordinated Co2+ions in the higher spin state. Fe2+ doped α-CoV2O6 (3 mol%) single crystals were synthesized using high temperature melt method. The motivation is to investigate whether disruption of 1D Co2+ ferromagnetic chains by small Fe3+ substitution alters the antiferromagnetic ground state and lead to stronger spin-frustration. In this paper, we report the magnetic and magnetodielectric properties of Fe doped α-CoV2O6 in detail. The strongly anisotropic nature of magnetic and magnetodielectric characteristics were captured well in the data through orientation dependent measurements with H being parallel to a and c axes of the crystal. Relative dielectric permittivity (εr) exhibited sharp peaks coinciding with the plateau edges Hc1 ∼2.2 T and Hc2 ∼4.4 T in the magnetization curves (M-H) for applied H parallel to a-axis. For dielectric measurements under applied H parallel to c-axis, relative dielectric permittivity exhibited sharp peak around Hc2 ∼3.1 T, again coinciding with the M-H behavior. Such closely related magnetic field induced dielectric transitions reflected in both M(H) and εr(H) measurements is a rare phenomenon and representative of strong spin-lattice coupling in this phase.http://dx.doi.org/10.1063/9.0000833 |
| spellingShingle | Preethi Meher K.R.S. Antoine Maignan D. Pelloquin Ch. Simon Magnetoelectric CoV2O6—Role of Fe inter-play in Co-based Ising spin chain interactions AIP Advances |
| title | Magnetoelectric CoV2O6—Role of Fe inter-play in Co-based Ising spin chain interactions |
| title_full | Magnetoelectric CoV2O6—Role of Fe inter-play in Co-based Ising spin chain interactions |
| title_fullStr | Magnetoelectric CoV2O6—Role of Fe inter-play in Co-based Ising spin chain interactions |
| title_full_unstemmed | Magnetoelectric CoV2O6—Role of Fe inter-play in Co-based Ising spin chain interactions |
| title_short | Magnetoelectric CoV2O6—Role of Fe inter-play in Co-based Ising spin chain interactions |
| title_sort | magnetoelectric cov2o6 role of fe inter play in co based ising spin chain interactions |
| url | http://dx.doi.org/10.1063/9.0000833 |
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