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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.09171 |
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| _version_ | 1866913543069106176 |
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| author | Okuma, Ryutaro MacFarquharson, Kylie Coldea, Radu |
| author_facet | Okuma, Ryutaro MacFarquharson, Kylie Coldea, Radu |
| contents | Rare earth oxides have attracted interest as a platform for studying frustrated magnetism arising from bond dependent anisotropic interactions. Ordered rock salt compounds Na$_2$PrO$_3$ crystallize in two polymorphs ($α$ and $β$) comprising honeycomb and hyperhoneycomb lattices of octahedrally coordinated Pr$^{4+}$ (4$f^1$). Although possible realization of antiferromagnetic Kitaev interactions is anticipated for these phases on the basis of ab initio models, the air-sensitivity of the two polymorphs has hampered reliable crystal growth and physical property measurements. Here, we have succeeded in preparing powder and single crystals of both $α$- and $β$-Na$_2$PrO$_3$ using modified synthetic procedures. Revised crystal structures for both polymorphs are obtained from refinement of untwinned single-crystal X-ray diffraction data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_09171 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Selective synthesis and crystal chemistry of candidate rare earth Kitaev materials: honeycomb and hyperhoneycomb Na$_2$PrO$_3$ Okuma, Ryutaro MacFarquharson, Kylie Coldea, Radu Strongly Correlated Electrons Materials Science Rare earth oxides have attracted interest as a platform for studying frustrated magnetism arising from bond dependent anisotropic interactions. Ordered rock salt compounds Na$_2$PrO$_3$ crystallize in two polymorphs ($α$ and $β$) comprising honeycomb and hyperhoneycomb lattices of octahedrally coordinated Pr$^{4+}$ (4$f^1$). Although possible realization of antiferromagnetic Kitaev interactions is anticipated for these phases on the basis of ab initio models, the air-sensitivity of the two polymorphs has hampered reliable crystal growth and physical property measurements. Here, we have succeeded in preparing powder and single crystals of both $α$- and $β$-Na$_2$PrO$_3$ using modified synthetic procedures. Revised crystal structures for both polymorphs are obtained from refinement of untwinned single-crystal X-ray diffraction data. |
| title | Selective synthesis and crystal chemistry of candidate rare earth Kitaev materials: honeycomb and hyperhoneycomb Na$_2$PrO$_3$ |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2410.09171 |