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 non-magnetic low-spin state. A...
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| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) Kapitel/Artikel |
| Sprache: | Englisch |
| Veröffentlicht: |
2011
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| In: |
Arxiv
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| Online-Zugang: | Verlag, kostenfrei, Volltext: http://arxiv.org/abs/1204.0730
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| Verfasserangaben: | N. Hollmann, M.W. Haverkort, M. Benomar, M. Cwik, M. Braden, and T. Lorenz |
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| 245 | 1 | 0 | |a Evidence for a temperature-induced spin-state transition of Co3+ in La2-xSrxCoO4 |c N. Hollmann, M.W. Haverkort, M. Benomar, M. Cwik, M. Braden, and T. Lorenz |
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| 500 | |a Im Titel ist die Ziffer 3 sowie das Plus-Zeichen hochgestellt; die Ziffern bzw. Zeichen 2-x, x, 4 sind tiefgestellt | ||
| 500 | |a Gesehen am 27.11.2017 | ||
| 520 | |a 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 non-magnetic low-spin state. Above room temperature, an increase in susceptibility compared to the behavior expected from Co2+ is seen, which we attribute to a 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+. | ||
| 650 | 4 | |a Condensed Matter - Strongly Correlated Electrons | |
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