Magnetic Properties of the Ruddlesden-Popper phases Pr_{2x Sr3-2x Ti2-x Cux}O₇ (x = 0.1, 0.2)
Popov D.V., Yatsyk I.V., Likerov R.F., Eremina R.M., Batulin R.G., Cheroisov M.A., Chupakhina T.I., Deeva Yu.A., Bazhal V.V., Gubaidullin A.T.

Received: December 9, 2025

DOI: 10.31857/S0044451026050066

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The Ruddlesden-Popper phases Pr_2xSr_3-2xTi_2-xCu_xO₇ (x = 0.1, 0.2) were synthesized via a precursor method. The temperature dependence of the magnetic susceptibility in the studied non-stoichiometric compounds follows the Curie-Weiss law over the measured temperature range of 5-300 K, with no magnetic phase transitions. The temperature dependence of the electron paramagnetic resonance spectra was studied in the X- and Q-bands. The g-tensor components and linewidth were determined by fitting the electron paramagnetic resonance spectra of powder samples. The distance between the two vibronic levels of the paramagnetic centers was determined from the temperature dependence of the linewidth above 190 K. Keywords}: Ruddlesden-Popper phase, Jahn-Teller effect, vibronic levels