A neodymium-lithium nickel-manganite of composition NdLiNiMnO was synthesized via a solid-state reaction of NdO, NiO, MnO, and LiCO in the temperature range 600 – 1250°C. X-ray diffraction analysis showed that the compound crystallizes in a cubic system. Calorimetric measurements in the 298.15–673 K range revealed the temperature dependence of the heat capacity, with anomalous jumps observed at 348 K and 423 K, likely associated with second-order phase transitions. The standard entropy was calculated. Thermodynamic functions S°(T), H°(T) – H°(298.15K), and Φ°(T) were determined over the 298.15–675 K interval. Electrophysical properties, including capacitance, electrical resistance, and dielectric permittivity, were studied in the 293–483 K range. It was found that NdLiNiMnO exhibits p-type (hole) conductivity in the 293–363 K and 423–483 K ranges, while metallic conductivity occurs in the 363–423 K interval.
B.K. Kasenov (Wed,) studied this question.