Syntheses, Crystal Structure and Magnetic Properties of Tl<sub>9</sub><i>RE</i>Te<sub>6</sub> (<i>RE</i> = Ce, Sm, Gd)
The three compounds Tl<sub>9</sub><i>RE</i>Te<sub>6</sub> with <i>RE</i> = Ce, Sm, Gd were synthesized from the elements at 1020 K. Their isostructural crystal structures are ordered derivatives of the Tl<sub>5</sub>Te<sub>3</sub&g...
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MDPI AG
2020-04-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/10/4/277 |
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| author | Anna Isaeva Rico Schönemann Thomas Doert |
| author_facet | Anna Isaeva Rico Schönemann Thomas Doert |
| author_sort | Anna Isaeva |
| collection | DOAJ |
| description | The three compounds Tl<sub>9</sub><i>RE</i>Te<sub>6</sub> with <i>RE</i> = Ce, Sm, Gd were synthesized from the elements at 1020 K. Their isostructural crystal structures are ordered derivatives of the Tl<sub>5</sub>Te<sub>3</sub> type with rare-earth metal and thallium occupying different Wyckoff positions. The structures can be understood as charge-ordered in accordance with the Zintl-Klemm concept: 9 Tl<sup>+</sup> + <i>RE</i><sup>3+</sup> + 6 Te<sup>2−</sup>. DFT calculations for Tl<sub>9</sub>GdTe<sub>6</sub>, however, result in a low, but finite density of states at the Fermi level. Magnetic data confirm trivalent Gd, but indicate a small amount of Ce<sup>4+</sup> in Tl<sub>9</sub>CeTe<sub>6</sub>; no indications for long-range magnetic order was found down to <i>T</i> = 2 K. |
| first_indexed | 2024-03-10T20:38:50Z |
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| id | doaj.art-73ec0dad6f6a4e82befaff9b25301203 |
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| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T20:38:50Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
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| series | Crystals |
| spelling | doaj.art-73ec0dad6f6a4e82befaff9b253012032023-11-19T20:51:30ZengMDPI AGCrystals2073-43522020-04-0110427710.3390/cryst10040277Syntheses, Crystal Structure and Magnetic Properties of Tl<sub>9</sub><i>RE</i>Te<sub>6</sub> (<i>RE</i> = Ce, Sm, Gd)Anna Isaeva0Rico Schönemann1Thomas Doert2Faculty of Physics, Technische Universität Dresden, D–01062 Dresden, GermanyHochfeld-Magnetlabor (HLD-EMFL), Helmholtz-Zentrum Dresden Rossendorf, D–01328 Dresden, GermanyFaculty of Chemistry and Food Chemistry, Technische Universität Dresden, D–01062 Dresden, GermanyThe three compounds Tl<sub>9</sub><i>RE</i>Te<sub>6</sub> with <i>RE</i> = Ce, Sm, Gd were synthesized from the elements at 1020 K. Their isostructural crystal structures are ordered derivatives of the Tl<sub>5</sub>Te<sub>3</sub> type with rare-earth metal and thallium occupying different Wyckoff positions. The structures can be understood as charge-ordered in accordance with the Zintl-Klemm concept: 9 Tl<sup>+</sup> + <i>RE</i><sup>3+</sup> + 6 Te<sup>2−</sup>. DFT calculations for Tl<sub>9</sub>GdTe<sub>6</sub>, however, result in a low, but finite density of states at the Fermi level. Magnetic data confirm trivalent Gd, but indicate a small amount of Ce<sup>4+</sup> in Tl<sub>9</sub>CeTe<sub>6</sub>; no indications for long-range magnetic order was found down to <i>T</i> = 2 K.https://www.mdpi.com/2073-4352/10/4/277Telluridesthalliumrare-earth metalscrystal structuremagnetic properties |
| spellingShingle | Anna Isaeva Rico Schönemann Thomas Doert Syntheses, Crystal Structure and Magnetic Properties of Tl<sub>9</sub><i>RE</i>Te<sub>6</sub> (<i>RE</i> = Ce, Sm, Gd) Crystals Tellurides thallium rare-earth metals crystal structure magnetic properties |
| title | Syntheses, Crystal Structure and Magnetic Properties of Tl<sub>9</sub><i>RE</i>Te<sub>6</sub> (<i>RE</i> = Ce, Sm, Gd) |
| title_full | Syntheses, Crystal Structure and Magnetic Properties of Tl<sub>9</sub><i>RE</i>Te<sub>6</sub> (<i>RE</i> = Ce, Sm, Gd) |
| title_fullStr | Syntheses, Crystal Structure and Magnetic Properties of Tl<sub>9</sub><i>RE</i>Te<sub>6</sub> (<i>RE</i> = Ce, Sm, Gd) |
| title_full_unstemmed | Syntheses, Crystal Structure and Magnetic Properties of Tl<sub>9</sub><i>RE</i>Te<sub>6</sub> (<i>RE</i> = Ce, Sm, Gd) |
| title_short | Syntheses, Crystal Structure and Magnetic Properties of Tl<sub>9</sub><i>RE</i>Te<sub>6</sub> (<i>RE</i> = Ce, Sm, Gd) |
| title_sort | syntheses crystal structure and magnetic properties of tl sub 9 sub i re i te sub 6 sub i re i ce sm gd |
| topic | Tellurides thallium rare-earth metals crystal structure magnetic properties |
| url | https://www.mdpi.com/2073-4352/10/4/277 |
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