Skip to main content
SpringerLink
Log in

Thermodynamic approach of spin-state excitations in LaCoO3

  • Published:
Journal of Thermal Analysis and Calorimetry Aims and scope Submit manuscript

Abstract

Magnetic susceptibility and heat capacity due to spin-state excitations in LaCoO3 were analyzed with an irregular solution model composed of Co3+ ions in the low-spin ground state and in the high-spin excited state. An energy-levels diagram proposed by Ropka and Radvanskii [1] was used for the high-spin excited state. This analysis showed that the entropy of mixing is less than that of ideal solutions and the enthalpy of mixing is negative, indicating that the high-spin Co ions are arranged as far apart as possible.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Z. Ropka and R. J. Radwanski, Phys. Rev. B, 67 (2003) 172401.

    Article  Google Scholar 

  2. P. Gütlich, A. Hauser and H. Spiering, Angew. Chem. Int. Ed. Engl., 33 (1994) 2024.

    Article  Google Scholar 

  3. H. Spiering, E. Meissner, H. Köppen, E. W. Müller and Gütlich, Chem. Phys., 68 (1982) 65.

    Article  CAS  Google Scholar 

  4. M. Sorai and S. Seki, J. Phys. Chem. Solids, 35 (1974) 555.

    Article  CAS  Google Scholar 

  5. T. Nakamoto, Z.-C. Tan and M. Sorai, Inorg. Chem., 40 (2001) 3805.

    Article  CAS  Google Scholar 

  6. J. B. Goodenough, J. Phys. Chem. Solids, 6 (1958) 287.

    Article  CAS  Google Scholar 

  7. P. M. Raccah and J. B. Goodenough, Phys. Rev., B 155 (1967) 932.

    Article  Google Scholar 

  8. M. A. Senaris-Rodriguez and J. B. Goodenough, J. Solid State Chem., 116 (1995) 224.

    Article  CAS  Google Scholar 

  9. Y. Tanabe and S. Sugano, J. Phys. Soc. Jpn., 9 (1954) 753, 766.

    Article  CAS  Google Scholar 

  10. S. Noguchi, S. Kawamata, K. Okuda, H. Nojiri and M. Motokawa, Phys. Rev. B, 66 (2002) 94404.

    Article  Google Scholar 

  11. R. H. Potze, G. A. Sawatzky and M. Abbate, Phys. Rev. B, 51 (1995) 11501.

    Article  CAS  Google Scholar 

  12. M. A. Korotin, S. Yu. Ezhov, I. V. Solovyev, V. I. Anisimov, D. I. Khomskii and G. A. Sawatzky, Phys. Rev. B, 54 (1996) 5309.

    Article  CAS  Google Scholar 

  13. T. Kyômen, Y. Asaka and M. Itoh, Phys. Rev. B, 67 (2003) 144424.

    Article  Google Scholar 

  14. T. Kyômen, Y. Asaka and M. Itoh, Phys. Rev. B, 71 (2005) 24418.

    Article  Google Scholar 

  15. M. Itoh, M. Sugahara, I. Natori and K. Motoya, J. Phys. Soc. Jpn., 64 (1995) 3967.

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Graduate School of Engineering, Department of Chemistry and Chemical Biology, Gunma University, Tenjin-cho 1-5-1, Kiryu, 376-8515, Japan

    T. Kyômen

  2. Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan

    M. Itoh

Authors
  1. T. Kyômen
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. Itoh
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to T. Kyômen.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Kyômen, T., Itoh, M. Thermodynamic approach of spin-state excitations in LaCoO3 . J Therm Anal Calorim 92, 477–479 (2008). https://doi.org/10.1007/s10973-007-8974-y

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10973-007-8974-y

Keywords

Search

Navigation