3R-CuCrO2 delafosite: crystal growth, crystal structure, dielectric and DC conductivity properties
Abstract Single-crystal samples of the 3R-CuCrO2 phase (R3m, a = 2.9613(2) Å, c = 17.098(2) Å) with a delafossite structure were grown by the flux method. Structural parameters were refined by X-ray structural analysis. The elemental composition of the grown crystals was confirmed by Auger electron...
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| Language: | English |
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Springer
2024-11-01
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| Series: | Discover Materials |
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| Online Access: | https://doi.org/10.1007/s43939-024-00145-y |
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| author | Anton Matasov Alexander Bush Vladislav Kozlov Adam Stash |
| author_facet | Anton Matasov Alexander Bush Vladislav Kozlov Adam Stash |
| author_sort | Anton Matasov |
| collection | DOAJ |
| description | Abstract Single-crystal samples of the 3R-CuCrO2 phase (R3m, a = 2.9613(2) Å, c = 17.098(2) Å) with a delafossite structure were grown by the flux method. Structural parameters were refined by X-ray structural analysis. The elemental composition of the grown crystals was confirmed by Auger electron spectroscopy. A threshold electric field switching effect from a high-resistance to a low-resistance state was discovered. The effect is characterized by a jump in electrical resistance (up to 5 orders of magnitude at E = 4.7 kV/cm, T = 120 K) and S-shaped current–voltage characteristics with a region of negative differential resistance. The temperature dependences of dielectric permittivity and dielectric loss tangent exhibit a Debye-type relaxation process with an activation energy of 0.51(3) eV. The observed features of dc conductivity, current–voltage characteristics, and dielectric properties interpreted on the basis of the existence of charge carriers in a small polaron state and the destruction of this state by the electric field. |
| format | Article |
| id | doaj-art-febdbe560d394e2b82e4e45ed6d3b087 |
| institution | Kabale University |
| issn | 2730-7727 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Springer |
| record_format | Article |
| series | Discover Materials |
| spelling | doaj-art-febdbe560d394e2b82e4e45ed6d3b0872024-11-17T12:53:27ZengSpringerDiscover Materials2730-77272024-11-014111110.1007/s43939-024-00145-y3R-CuCrO2 delafosite: crystal growth, crystal structure, dielectric and DC conductivity propertiesAnton Matasov0Alexander Bush1Vladislav Kozlov2Adam Stash3Department of Physics and Technologies of Electrical Materials and Components, National Research University “MPEI”Research Institute of Solid-State Electronics Materials, MIREA, Russian Technological UniversityResearch Institute of Solid-State Electronics Materials, MIREA, Russian Technological UniversityNesmeyanov Institute of Organoelement Compounds, Russian Academy of SciencesAbstract Single-crystal samples of the 3R-CuCrO2 phase (R3m, a = 2.9613(2) Å, c = 17.098(2) Å) with a delafossite structure were grown by the flux method. Structural parameters were refined by X-ray structural analysis. The elemental composition of the grown crystals was confirmed by Auger electron spectroscopy. A threshold electric field switching effect from a high-resistance to a low-resistance state was discovered. The effect is characterized by a jump in electrical resistance (up to 5 orders of magnitude at E = 4.7 kV/cm, T = 120 K) and S-shaped current–voltage characteristics with a region of negative differential resistance. The temperature dependences of dielectric permittivity and dielectric loss tangent exhibit a Debye-type relaxation process with an activation energy of 0.51(3) eV. The observed features of dc conductivity, current–voltage characteristics, and dielectric properties interpreted on the basis of the existence of charge carriers in a small polaron state and the destruction of this state by the electric field.https://doi.org/10.1007/s43939-024-00145-yElectrical conductivity3R-CuCrO2Delafossite structureNonlinear electrical propertiesElectric field switching |
| spellingShingle | Anton Matasov Alexander Bush Vladislav Kozlov Adam Stash 3R-CuCrO2 delafosite: crystal growth, crystal structure, dielectric and DC conductivity properties Discover Materials Electrical conductivity 3R-CuCrO2 Delafossite structure Nonlinear electrical properties Electric field switching |
| title | 3R-CuCrO2 delafosite: crystal growth, crystal structure, dielectric and DC conductivity properties |
| title_full | 3R-CuCrO2 delafosite: crystal growth, crystal structure, dielectric and DC conductivity properties |
| title_fullStr | 3R-CuCrO2 delafosite: crystal growth, crystal structure, dielectric and DC conductivity properties |
| title_full_unstemmed | 3R-CuCrO2 delafosite: crystal growth, crystal structure, dielectric and DC conductivity properties |
| title_short | 3R-CuCrO2 delafosite: crystal growth, crystal structure, dielectric and DC conductivity properties |
| title_sort | 3r cucro2 delafosite crystal growth crystal structure dielectric and dc conductivity properties |
| topic | Electrical conductivity 3R-CuCrO2 Delafossite structure Nonlinear electrical properties Electric field switching |
| url | https://doi.org/10.1007/s43939-024-00145-y |
| work_keys_str_mv | AT antonmatasov 3rcucro2delafositecrystalgrowthcrystalstructuredielectricanddcconductivityproperties AT alexanderbush 3rcucro2delafositecrystalgrowthcrystalstructuredielectricanddcconductivityproperties AT vladislavkozlov 3rcucro2delafositecrystalgrowthcrystalstructuredielectricanddcconductivityproperties AT adamstash 3rcucro2delafositecrystalgrowthcrystalstructuredielectricanddcconductivityproperties |