Copper oxide selenite
| Identifiers
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InChI=1S/2Cu.H2O3Se.O/c;;1-4(2)3;/h;;(H2,1,2,3);/q2*+1;;-2/p-2 Key: CGYPTBPQZTWRHL-UHFFFAOYSA-L
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[O-][Se](=O)[O-].[Cu+].[Cu+].[O-2]
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| Properties
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Cu2OSeO3
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| Molar mass
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270.059 g/mol
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| Appearance
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Green dodecahedral crystals[1]
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| Density
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5.1 g/cm3[2]
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| Band gap
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2.5 eV[3]
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| Thermal conductivity
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400 W/(m·K) (9 K)[4]
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3.8 (100 K, 1 kHz)[2]
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| Structure[2]
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Cubic
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P213, #198, cP56
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a = 0.8924 nm
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8
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Chemical compound
Copper oxide selenite is an inorganic compound with the chemical formula Cu2OSeO3. It is an electrically insulating, piezoelectric and piezomagnetic material, which becomes a ferrimagnet upon cooling below 58 K. As of 2021, Cu2OSeO3 is the only insulating material that hosts magnetic skyrmions.[1]
- ^ a b Panella, Jessica R.; Trump, Benjamin A.; Marcus, Guy G.; McQueen, Tyrel M. (2017). "Seeded Chemical Vapor Transport Growth of Cu2OSeO3". Crystal Growth & Design. 17 (9): 4944–4948. arXiv:1706.02411. doi:10.1021/acs.cgd.7b00879. S2CID 103302936.
- ^ a b c Bos, Jan-Willem G.; Colin, Claire V.; Palstra, Thomas T. M. (2008). "Magnetoelectric coupling in the cubic ferrimagnet Cu2OSeO3". Physical Review B. 78 (9): 094416. arXiv:0808.3955. Bibcode:2008PhRvB..78i4416B. doi:10.1103/PhysRevB.78.094416. S2CID 56431702.
- ^ Versteeg, R. B.; Vergara, I.; Schäfer, S. D.; Bischoff, D.; Aqeel, A.; Palstra, T. T. M.; Grüninger, M.; van Loosdrecht, P. H. M. (2016). "Optically probed symmetry breaking in the chiral magnet Cu2OSeO3". Physical Review B. 94 (9): 094409. arXiv:1605.01900. Bibcode:2016PhRvB..94i4409V. doi:10.1103/PhysRevB.94.094409. S2CID 118390265.
- ^ Prasai, N.; Akopyan, A.; Trump, B. A.; Marcus, G. G.; Huang, S. X.; McQueen, T. M.; Cohn, J. L. (2019). "Spin phases of the helimagnetic insulator Cu2OSeO3 probed by magnon heat conduction". Physical Review B. 99 (2): 020403. arXiv:1901.01242. Bibcode:2019PhRvB..99b0403P. doi:10.1103/PhysRevB.99.020403. S2CID 119506811.