Научная электронная библиотека ULRICH'S Periodicals Directory

Сибирский государственный университет
науки и технологий имени академика М.Ф. Решетнева

Сибирский аэрокосмический журнал
ISSN 2712-8970 (Print) ISSN 2782-5760 (on-line)

Сведения об образовательной организации

UDK 539.21 (06)
INFLUENCE OF PLASMA SYNTHESIS OF ZrO2 NANOPARTICLES ON MAGNETIC FLUX PINNING IN GRANULAR YBa2Cu3O7-y
A. V. Ushakov1,2, I. V. Karpov1,2, A. A. Lepeshev2,3, L. Yu. Fedorov2*, A. A. Shaihadinov2
1 Reshetnev Siberian State Aerospace University 31, Krasnoyarsky Rabochy Av., Krasnoyarsk, 660037, Russian Federation 2 Siberian Federal University 79, Svobodny Av., Krasnoyarsk, 660041, Russian Federation 3 Krasnoyarsk Scientific Center, SB RAS 50, Akademgorodok, Krasnoyarsk, 660036, Russian Federation * E-mail: sfu-unesco@mail.ru
In this work, the effect of ZrO2 nanoparticles prepared in a low-pressure arc discharge plasma on magnetic flux pinning of granular YBa2Cu3O7-y/nanoZrO2 composites has been studied. It has been shown that the ZrO2 nanoparticles do not change the superconducting transition and the microstructure of superconductors. At a temperature of 5 K, the addition of 0.5 and 1 wt % of ZrO2 nanoparticles may lead to the additional effect of magnetic flux pinning and the increase in the critical current density Jc. The Jc value for composites with 1 wt % is two times larger than that for the reference sample. The fishtail effect is observed for YBa2Cu3O7-y/nanoZrO2 composites at the temperatures of 20 and 50 K. The problems associated with the additional effect of magnetic flux pinning of granular YBa2Cu3O7-y/nanoZrO2 composites and the appearance of the fishtail effect have been discussed.
Keywords: nanoparticles, low-pressure arc discharge plasma, superconductors, magnetic flux pinning, fishtail effect.
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Ushakov Anatoly Vasil'evich – Cand. Sc., Docent, Senior Researcher; Reshetnev Siberian State Aerospace University. E-mail: ushackov@mail.ru.

Karpov Igor Vasil'evich – Cand. Sc., Senior Researcher; Siberian Federal University. E-mail: karpovsfu@mail.ru.

Lepeshev Anatoly Aleksandrovich – Dr. Sc., Lead researcher, Siberian Federal University. E-mail: alepeshev@yandex.ru.

Fedorov Leonid Yur'evich – graduate student, junior researcher; Siberian Federal University. E-mail: 1401-87@mail.ru.

Shayhadinov Aleksandr Anatol'evich – Cand. Sc., Senior Researcher; Siberian Federal Uneiversity. E-mail: shaihadinov@mail.ru.