Evidence for a temperature-induced spin-state transition of Co3+ in La2-xSrxCoO4
We study the magnetic susceptibility of mixed-valent La2−xSrxCoO4 single crystals in the doping range of 0.5⩽x⩽0.8 for temperatures up to 1000 K. The magnetism below room temperature is described by paramagnetic Co2+ in the high-spin state and by Co3+ in the nonmagnetic low-spin state. At high tempe...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
23 May 2011
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| In: |
Physical review. B, Condensed matter and materials physics
Year: 2011, Volume: 83, Issue: 17, Pages: 174435 |
| ISSN: | 1550-235X |
| DOI: | 10.1103/PhysRevB.83.174435 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevB.83.174435 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevB.83.174435 
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| Author Notes: | N. Hollmann, M.W. Haverkort, M. Benomar, M. Cwik, M. Braden, and T. Lorenz |
| Summary: | We study the magnetic susceptibility of mixed-valent La2−xSrxCoO4 single crystals in the doping range of 0.5⩽x⩽0.8 for temperatures up to 1000 K. The magnetism below room temperature is described by paramagnetic Co2+ in the high-spin state and by Co3+ in the nonmagnetic low-spin state. At high temperatures, an increase in susceptibility is seen, which we attribute to a temperature-induced spin-state transition of Co3+. The susceptibility is analyzed by comparison to full-multiplet calculations for the thermal population of the high- and intermediate-spin states of Co3+. |
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| Item Description: | Im Titel ist die Ziffer 3 sowie das Plus-Zeichen hochgestellt; die Ziffern bzw. Zeichen 2-x, x, 4 sind tiefgestellt Gesehen am 03.11.2017 |
| Physical Description: | Online Resource |
| ISSN: | 1550-235X |
| DOI: | 10.1103/PhysRevB.83.174435 |