The effect of temperature and pressure on the spin state of cobalt ions in La1−xPrxCoO3 compounds

@article{Panfilov2020TheEO,
  title={The effect of temperature and pressure on the spin state of cobalt ions in La1−xPrxCoO3 compounds},
  author={A. S. Panfilov and Anastasiya A. Lyogenkaya and G. E. Grechnev and V. A. Pashchenko and Leonid O. Vasylechko and Vasyl Hreb and Andrei V. Kovalevsky},
  journal={Low Temperature Physics},
  year={2020},
  volume={46},
  pages={606-614}
}
The crystal structure, magnetic susceptibility as a function of temperature χ(T) in the range 5–400 K, and the hydrostatic pressure effect on χ at fixed temperatures T = 78, 150, and 300 K, were studied in perovskite-like compounds La1−xPrxCoO3 (x = 0, 0.1, 0.2, and 0.3). The obtained experimental data were analyzed using a two-level model with an energy gap Δ between the ground and excited states of the system that correspond to the spin values S = 0 and 1 for Co3+ ions. In this model, the… 
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