Interplay of 4f-3d interactions and spin-induced ferroelectricity in the green phase Gd_{2}BaCuO_{5}
In most of the spin-induced multiferroics, the ferroelectricity is caused by inversion symmetry breaking by complex spin structures of the transition-metal ions. Here, we report the importance of interplay of 4f-3d magnetic interactions in inducing ferroelectricity in the centrosymmetric (Pnma) gree...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2020-06-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.023271 |
| _version_ | 1797211423828344832 |
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| author | Premakumar Yanda I. V. Golosovsky I. Mirebeau N. V. Ter-Oganessian Juan Rodríguez-Carvajal A. Sundaresan |
| author_facet | Premakumar Yanda I. V. Golosovsky I. Mirebeau N. V. Ter-Oganessian Juan Rodríguez-Carvajal A. Sundaresan |
| author_sort | Premakumar Yanda |
| collection | DOAJ |
| description | In most of the spin-induced multiferroics, the ferroelectricity is caused by inversion symmetry breaking by complex spin structures of the transition-metal ions. Here, we report the importance of interplay of 4f-3d magnetic interactions in inducing ferroelectricity in the centrosymmetric (Pnma) green phase compound Gd_{2}BaCuO_{5}. With decreasing temperature, a long-range incommensurate ordering of both Gd^{3+} and Cu^{2+} spins at T_{N}=11.8K occurs with the modulation vector k=(0,0,g) and a lock-in transition to a strongly noncollinear structure with k_{c}=(0,0,½) at T_{loc}∼6K. Both spin structures induce electric polarization consistent with the polar magnetic space groups Pm1^{′}(α,0,g)ss and P_{a}ca2_{1}, respectively. Based on the symmetry analysis of magnetoelectric interactions, we suggest that the ferroelectricity in both commensurate and incommensurate phases is driven by a complex interplay of two-spins and single-spin contributions from magnetic ions located in noncentrosymmetric environments. Our study demonstrates that the green phase family of compounds may serve as a playground for studying the multiferroic phenomena, where the interplay of 4f-3d interactions demonstrates an alternative route to find magnetoelectric materials. |
| first_indexed | 2024-04-24T10:26:16Z |
| format | Article |
| id | doaj.art-b8b00e29fa6a434a8e76a2749bbb5229 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:26:16Z |
| publishDate | 2020-06-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-b8b00e29fa6a434a8e76a2749bbb52292024-04-12T16:54:58ZengAmerican Physical SocietyPhysical Review Research2643-15642020-06-012202327110.1103/PhysRevResearch.2.023271Interplay of 4f-3d interactions and spin-induced ferroelectricity in the green phase Gd_{2}BaCuO_{5}Premakumar YandaI. V. GolosovskyI. MirebeauN. V. Ter-OganessianJuan Rodríguez-CarvajalA. SundaresanIn most of the spin-induced multiferroics, the ferroelectricity is caused by inversion symmetry breaking by complex spin structures of the transition-metal ions. Here, we report the importance of interplay of 4f-3d magnetic interactions in inducing ferroelectricity in the centrosymmetric (Pnma) green phase compound Gd_{2}BaCuO_{5}. With decreasing temperature, a long-range incommensurate ordering of both Gd^{3+} and Cu^{2+} spins at T_{N}=11.8K occurs with the modulation vector k=(0,0,g) and a lock-in transition to a strongly noncollinear structure with k_{c}=(0,0,½) at T_{loc}∼6K. Both spin structures induce electric polarization consistent with the polar magnetic space groups Pm1^{′}(α,0,g)ss and P_{a}ca2_{1}, respectively. Based on the symmetry analysis of magnetoelectric interactions, we suggest that the ferroelectricity in both commensurate and incommensurate phases is driven by a complex interplay of two-spins and single-spin contributions from magnetic ions located in noncentrosymmetric environments. Our study demonstrates that the green phase family of compounds may serve as a playground for studying the multiferroic phenomena, where the interplay of 4f-3d interactions demonstrates an alternative route to find magnetoelectric materials.http://doi.org/10.1103/PhysRevResearch.2.023271 |
| spellingShingle | Premakumar Yanda I. V. Golosovsky I. Mirebeau N. V. Ter-Oganessian Juan Rodríguez-Carvajal A. Sundaresan Interplay of 4f-3d interactions and spin-induced ferroelectricity in the green phase Gd_{2}BaCuO_{5} Physical Review Research |
| title | Interplay of 4f-3d interactions and spin-induced ferroelectricity in the green phase Gd_{2}BaCuO_{5} |
| title_full | Interplay of 4f-3d interactions and spin-induced ferroelectricity in the green phase Gd_{2}BaCuO_{5} |
| title_fullStr | Interplay of 4f-3d interactions and spin-induced ferroelectricity in the green phase Gd_{2}BaCuO_{5} |
| title_full_unstemmed | Interplay of 4f-3d interactions and spin-induced ferroelectricity in the green phase Gd_{2}BaCuO_{5} |
| title_short | Interplay of 4f-3d interactions and spin-induced ferroelectricity in the green phase Gd_{2}BaCuO_{5} |
| title_sort | interplay of 4f 3d interactions and spin induced ferroelectricity in the green phase gd 2 bacuo 5 |
| url | http://doi.org/10.1103/PhysRevResearch.2.023271 |
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