SiO$_2$-mediated facile hydrothermal synthesis of spiroffite-type Co$_2$Te$_3$O$_8$
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866915920779149312 |
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| author | Ferrenti, Austin M. Drichko, Natalia McQueen, Tyrel M. |
| author_facet | Ferrenti, Austin M. Drichko, Natalia McQueen, Tyrel M. |
| contents | The hydrothermal synthesis of novel materials typically relies on both knowledge of the redox activities of all cations present in the reaction solution and a small toolset of so-called mineralizers to tune the solution's overall chemical potential. Upon the use of a less conventional mineralizer species, SiO$_2$, we show the stabilization of spiroffite-type Co$_2$Te$_3$O$_8$ under less forceful hydrothermal conditions than in previous reports. When synthesized in the presence of both SiO$_2$ and each respective alkali carbonate as a secondary mineralizer, silicon substitution in place of tellurium in the host structure becomes apparent, and the corresponding introduced disorder gives rise to enhanced low-temperature ferromagnetism. Our results highlight the complexities of underutilized and combined mineralizer species in the stabilization and tuning of complex magnetic ground states via hydrothermal synthesis techniques. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_18477 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | SiO$_2$-mediated facile hydrothermal synthesis of spiroffite-type Co$_2$Te$_3$O$_8$ Ferrenti, Austin M. Drichko, Natalia McQueen, Tyrel M. Materials Science Strongly Correlated Electrons The hydrothermal synthesis of novel materials typically relies on both knowledge of the redox activities of all cations present in the reaction solution and a small toolset of so-called mineralizers to tune the solution's overall chemical potential. Upon the use of a less conventional mineralizer species, SiO$_2$, we show the stabilization of spiroffite-type Co$_2$Te$_3$O$_8$ under less forceful hydrothermal conditions than in previous reports. When synthesized in the presence of both SiO$_2$ and each respective alkali carbonate as a secondary mineralizer, silicon substitution in place of tellurium in the host structure becomes apparent, and the corresponding introduced disorder gives rise to enhanced low-temperature ferromagnetism. Our results highlight the complexities of underutilized and combined mineralizer species in the stabilization and tuning of complex magnetic ground states via hydrothermal synthesis techniques. |
| title | SiO$_2$-mediated facile hydrothermal synthesis of spiroffite-type Co$_2$Te$_3$O$_8$ |
| topic | Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2407.18477 |