Structural and magnetic interplay in multiferroic Ho₀.₅Nd₀.₅Fe₃(BO₃)₄
Rare-earth iron borates, RFe3(BO3)4 (R = rare earth), are of considerable interest because of their structural and magnetic complexities due to the involvement of both 3d and 4f magnetic interactions in a helical lattice. Among them Ho0.5Nd0.5Fe3(BO3)4 has attracted the most attention, as it exhibit...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Online Access: | https://hdl.handle.net/10356/171643 |
| _version_ | 1824455366886293504 |
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| author | Tripathy, A. Gautam, K. Dey, K. Sahu, S. R. Ahad, A. Upadhyay, A. Sagdeo, A. Francoual, S. Bereciartua, P. J. Gudim, I. Strempfer, J. Sathe, V. G. Shukla, D. K. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Tripathy, A. Gautam, K. Dey, K. Sahu, S. R. Ahad, A. Upadhyay, A. Sagdeo, A. Francoual, S. Bereciartua, P. J. Gudim, I. Strempfer, J. Sathe, V. G. Shukla, D. K. |
| author_sort | Tripathy, A. |
| collection | NTU |
| description | Rare-earth iron borates, RFe3(BO3)4 (R = rare earth), are of considerable interest because of their structural and magnetic complexities due to the involvement of both 3d and 4f magnetic interactions in a helical lattice. Among them Ho0.5Nd0.5Fe3(BO3)4 has attracted the most attention, as it exhibits a multiferroic property with a large, spontaneous, and magnetic-field-induced electric polarization (P) below the antiferromagnetic transition temperature (TN∼32 K). This compound has been reported to be noncentrosymmetric (nonpolar) down to the lowest temperature, and the origin of spontaneous electric polarization below TN is not known. By utilizing temperature-dependent synchrotron x-ray powder diffraction, we report here the observation of structural phase transition, i.e., the lowering of crystal symmetry from R32 to P3121 below TN in Ho0.5Nd0.5Fe3(BO3)4, which is further confirmed by single-crystal x-ray diffraction measurements as well as substantiated by dielectric and Raman spectroscopic results. With the help of x-ray resonant magnetic scattering, we have studied the element-specific magnetic ordering behavior, and by combining all the results, we show that the spontaneous electric polarization below the antiferromagnetic ordering transition emerges through the p-d hybridization mechanism associated with the FeO6 octahedra. The observations of subtle structural changes at low temperature and element-specific magnetic ordering behavior provide a comprehensive understanding of the multiferroicity in this family of compounds. |
| first_indexed | 2025-02-19T03:37:04Z |
| format | Journal Article |
| id | ntu-10356/171643 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:37:04Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1716432023-11-06T15:35:49Z Structural and magnetic interplay in multiferroic Ho₀.₅Nd₀.₅Fe₃(BO₃)₄ Tripathy, A. Gautam, K. Dey, K. Sahu, S. R. Ahad, A. Upadhyay, A. Sagdeo, A. Francoual, S. Bereciartua, P. J. Gudim, I. Strempfer, J. Sathe, V. G. Shukla, D. K. School of Physical and Mathematical Sciences Science::Physics Magnetoelastic Interactions Scattering Rare-earth iron borates, RFe3(BO3)4 (R = rare earth), are of considerable interest because of their structural and magnetic complexities due to the involvement of both 3d and 4f magnetic interactions in a helical lattice. Among them Ho0.5Nd0.5Fe3(BO3)4 has attracted the most attention, as it exhibits a multiferroic property with a large, spontaneous, and magnetic-field-induced electric polarization (P) below the antiferromagnetic transition temperature (TN∼32 K). This compound has been reported to be noncentrosymmetric (nonpolar) down to the lowest temperature, and the origin of spontaneous electric polarization below TN is not known. By utilizing temperature-dependent synchrotron x-ray powder diffraction, we report here the observation of structural phase transition, i.e., the lowering of crystal symmetry from R32 to P3121 below TN in Ho0.5Nd0.5Fe3(BO3)4, which is further confirmed by single-crystal x-ray diffraction measurements as well as substantiated by dielectric and Raman spectroscopic results. With the help of x-ray resonant magnetic scattering, we have studied the element-specific magnetic ordering behavior, and by combining all the results, we show that the spontaneous electric polarization below the antiferromagnetic ordering transition emerges through the p-d hybridization mechanism associated with the FeO6 octahedra. The observations of subtle structural changes at low temperature and element-specific magnetic ordering behavior provide a comprehensive understanding of the multiferroicity in this family of compounds. Published version A.T. and D.K.S. gratefully acknowledge financial support from the Department of Science and Technology (DST) in India for travel support through the India-DESY Collaboration for performing experiments at PETRA-III, DESY. D.K.S. acknowledges support from the DST, New Delhi, India, through Grant No. INI/RUS/RFBR/P-269 (DST-RSF project). 2023-11-02T02:22:43Z 2023-11-02T02:22:43Z 2023 Journal Article Tripathy, A., Gautam, K., Dey, K., Sahu, S. R., Ahad, A., Upadhyay, A., Sagdeo, A., Francoual, S., Bereciartua, P. J., Gudim, I., Strempfer, J., Sathe, V. G. & Shukla, D. K. (2023). Structural and magnetic interplay in multiferroic Ho₀.₅Nd₀.₅Fe₃(BO₃)₄. Physical Review B, 107(21), 214106-. https://dx.doi.org/10.1103/PhysRevB.107.214106 1098-0121 https://hdl.handle.net/10356/171643 10.1103/PhysRevB.107.214106 2-s2.0-85163524761 21 107 214106 en Physical Review B © 2023 American Physical Society. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1103/PhysRevB.107.214106 or URL link. application/pdf |
| spellingShingle | Science::Physics Magnetoelastic Interactions Scattering Tripathy, A. Gautam, K. Dey, K. Sahu, S. R. Ahad, A. Upadhyay, A. Sagdeo, A. Francoual, S. Bereciartua, P. J. Gudim, I. Strempfer, J. Sathe, V. G. Shukla, D. K. Structural and magnetic interplay in multiferroic Ho₀.₅Nd₀.₅Fe₃(BO₃)₄ |
| title | Structural and magnetic interplay in multiferroic Ho₀.₅Nd₀.₅Fe₃(BO₃)₄ |
| title_full | Structural and magnetic interplay in multiferroic Ho₀.₅Nd₀.₅Fe₃(BO₃)₄ |
| title_fullStr | Structural and magnetic interplay in multiferroic Ho₀.₅Nd₀.₅Fe₃(BO₃)₄ |
| title_full_unstemmed | Structural and magnetic interplay in multiferroic Ho₀.₅Nd₀.₅Fe₃(BO₃)₄ |
| title_short | Structural and magnetic interplay in multiferroic Ho₀.₅Nd₀.₅Fe₃(BO₃)₄ |
| title_sort | structural and magnetic interplay in multiferroic ho₀ ₅nd₀ ₅fe₃ bo₃ ₄ |
| topic | Science::Physics Magnetoelastic Interactions Scattering |
| url | https://hdl.handle.net/10356/171643 |
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