High-Pressure Routes to New Pyrochlores and Novel Magnetism
The pyrochlore structure (A<sub>2</sub>B<sub>2</sub>O<sub>7</sub>) has been an object of consistent study by materials scientists largely due to the stability of the cubic lattice with respect to a wide variety of chemical species on the A or B sites. The criterio...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-04-01
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| Series: | Inorganics |
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| Online Access: | https://www.mdpi.com/2304-6740/7/4/49 |
| _version_ | 1828856012035063808 |
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| author | Haidong Zhou Christopher R. Wiebe |
| author_facet | Haidong Zhou Christopher R. Wiebe |
| author_sort | Haidong Zhou |
| collection | DOAJ |
| description | The pyrochlore structure (A<sub>2</sub>B<sub>2</sub>O<sub>7</sub>) has been an object of consistent study by materials scientists largely due to the stability of the cubic lattice with respect to a wide variety of chemical species on the A or B sites. The criterion for stability under ambient conditions is controlled by the ratio of these cations, which is empirically 1.36 < R<sub><i>A</i></sub>/R<sub><i>B</i></sub> < 1.71. However, under applied pressure synthesis conditions, the pyrochlore lattice is stable up to R<sub><i>A</i></sub>/R<sub><i>B</i></sub> ∼ 2.30, opening up possibilities for new compounds. In this review, we will highlight recent work in exploring new rare-earth pyrochlores such as the germanates RE<sub>2</sub>Ge<sub>2</sub>O<sub>7</sub> and platinates RE<sub>2</sub>Pt<sub>2</sub>O<sub>7</sub>. We highlight recent discoveries made in these pyrochlores such as highly correlated spin ice behavior, spin liquid ground states, and exotic magnetic ordering. |
| first_indexed | 2024-12-13T01:05:29Z |
| format | Article |
| id | doaj.art-b6573c0dce6f48f58aa2f44da5480da2 |
| institution | Directory Open Access Journal |
| issn | 2304-6740 |
| language | English |
| last_indexed | 2024-12-13T01:05:29Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Inorganics |
| spelling | doaj.art-b6573c0dce6f48f58aa2f44da5480da22022-12-22T00:04:33ZengMDPI AGInorganics2304-67402019-04-01744910.3390/inorganics7040049inorganics7040049High-Pressure Routes to New Pyrochlores and Novel MagnetismHaidong Zhou0Christopher R. Wiebe1Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996-1200, USADepartment of Chemistry, University of Winnipeg, Winnipeg, MB R3B 2E2, CanadaThe pyrochlore structure (A<sub>2</sub>B<sub>2</sub>O<sub>7</sub>) has been an object of consistent study by materials scientists largely due to the stability of the cubic lattice with respect to a wide variety of chemical species on the A or B sites. The criterion for stability under ambient conditions is controlled by the ratio of these cations, which is empirically 1.36 < R<sub><i>A</i></sub>/R<sub><i>B</i></sub> < 1.71. However, under applied pressure synthesis conditions, the pyrochlore lattice is stable up to R<sub><i>A</i></sub>/R<sub><i>B</i></sub> ∼ 2.30, opening up possibilities for new compounds. In this review, we will highlight recent work in exploring new rare-earth pyrochlores such as the germanates RE<sub>2</sub>Ge<sub>2</sub>O<sub>7</sub> and platinates RE<sub>2</sub>Pt<sub>2</sub>O<sub>7</sub>. We highlight recent discoveries made in these pyrochlores such as highly correlated spin ice behavior, spin liquid ground states, and exotic magnetic ordering.https://www.mdpi.com/2304-6740/7/4/49geometrically frustrated magnetismhigh-pressure synthesismagnetic oxides |
| spellingShingle | Haidong Zhou Christopher R. Wiebe High-Pressure Routes to New Pyrochlores and Novel Magnetism Inorganics geometrically frustrated magnetism high-pressure synthesis magnetic oxides |
| title | High-Pressure Routes to New Pyrochlores and Novel Magnetism |
| title_full | High-Pressure Routes to New Pyrochlores and Novel Magnetism |
| title_fullStr | High-Pressure Routes to New Pyrochlores and Novel Magnetism |
| title_full_unstemmed | High-Pressure Routes to New Pyrochlores and Novel Magnetism |
| title_short | High-Pressure Routes to New Pyrochlores and Novel Magnetism |
| title_sort | high pressure routes to new pyrochlores and novel magnetism |
| topic | geometrically frustrated magnetism high-pressure synthesis magnetic oxides |
| url | https://www.mdpi.com/2304-6740/7/4/49 |
| work_keys_str_mv | AT haidongzhou highpressureroutestonewpyrochloresandnovelmagnetism AT christopherrwiebe highpressureroutestonewpyrochloresandnovelmagnetism |