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Dipole-dipole interaction weakening in ensembles of cobalt microspheres with a nonmagnetic core
Russian version
DOI: 10.21883/PSS.2022.09.54163.16HH
Komogortsev S. V. 1,2,3, Chekanova L. A. 1, Shabanova O. V. 4, Shabanov A. V. 1, Nemtsev I. V. 1,5, Neznakhin D. S.6, Denisova E. A. 1,2, Felk V. A. 3, Mohov A. A.1, Iskhakov R. S. 1,3
1Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia
2Siberian Federal University, Krasnoyarsk, Russia
3Siberian State University of Science and Technology, Krasnoyarsk, Russia
4Special Designing and Technological Bureau “Nauka” KSC SB RAS, Krasnoyarsk, Russia
5Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russia
6Ural Federal University after the first President of Russia B.N. Yeltsin, Yekaterinburg, Russia
Email: komogor@iph.krasn.ru, chekanova-lida@mail.ru, ollach@yandex.ru, ivan_nemtsev@mail.ru, len-den@iph.krasn.ru, vlaf80@mail.ru, alexey.mohov94@gmail.com, rauf@iph.krasn.ru
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Magnetic microspheres with nonmagnetic acrylic glass core were fabricated using electroless deposition. There are favorable conditions for magnetic flux closure within each particle. As a result, the dipole-dipole interaction in the powder of such microspheres is reduced drastically. This is the key difference between powders of magnetic microspheres and powders of full magnetic spherical particles witch behavior is significantly affected by the dipole-dipole interaction. The magnetic hysteresis in the cobalt microspheres with nonmagnetic core is significantly large then in the full cobalt particles produced using the same technique. Keywords: Magnetic microspheres, magnetic dipole-dipole interaction.
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