Synthesis of Complex Oxides under the Influence of Air Plasma of a Pulsed High-Voltage Discharge on a Mechanical Mixture of Simple Oxides and Metal Electrodes and their Magnetic Properties
Abstract
CuO/Cu2O/Y2O3/Y2BaCuO/YBa2Cu3O6.32 composite containing complex oxides was obtained by direct exposing a powder mixture of Y2O3, BaO2, and CuO to pulsed high-voltage discharge plasma. Annealing this composite at 1173 K yielded a Y2BaCuO/CuO/YBa2Cu3O6.91 composite containing the well-known high-temperature superconductor YBa2Cu3O6.91. The presence of a superconducting phase in the resulting composite at T < 87 K was confirmed by data obtained on a vibromagnetometer. The NiCr2O4/NiO/Ni composite was obtained by plasma treatment of nichrome wire electrodes. The synthesized sample exhibits a shift in the magnetic hysteresis loop at low temperature, indicating the presence of FM and AFM regions in exchange interaction. The monolithic sample, containing a Cu2O core coated with a CuO shell, was obtained by plasma treatment of copper wire. The temperature dependence of the sample’s magnetization is characteristic of high-temperature superconductivity. The plasma-chemical methods used are promising for research into the synthesis of new functional materials.
About the Authors
V. G. KuryavyiRussian Federation
Vladivostok
I. А. Tkachenko
Russian Federation
Vladivostok
А. V. Gerasimenko
Russian Federation
Vladivostok
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Review
For citations:
Kuryavyi V.G., Tkachenko I.А., Gerasimenko А.V. Synthesis of Complex Oxides under the Influence of Air Plasma of a Pulsed High-Voltage Discharge on a Mechanical Mixture of Simple Oxides and Metal Electrodes and their Magnetic Properties. Zhurnal Prikladnoii Spektroskopii. 2026;93(3):349-356. (In Russ.)
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