Journal of Siberian Federal University. Mathematics & Physics / Ferromagnetic Resonance of Superparamagnetic Fe2O3/SiO2 Composites

Full text (.pdf)
Issue
Journal of Siberian Federal University. Mathematics & Physics. Prepublication
Authors
Stolyar, Sergey V.; Li, Oksana A.; Boev, Nikita M.; Yaroslavtsev, Roman N.; Tyumentseva, Anna V.; Shokhrina, Anna O.; Vorotynov, Alexandre M.; Iskhakov, Rauf S.; Vazhenin, Irina G.; Raikher, Yurii L.
Contact information
Stolyar, Sergey V. : Krasnoyarsk Science Center, Federal Research Center KSC SB RAS (Krasnoyarsk, Russian Federation); Siberian Federal University (Krasnoyarsk, Russian Federation); OCRID: 0000-0003-4310-091X; Li, Oksana A. : Krasnoyarsk Science Center, Federal Research Center KSC SB RAS (Krasnoyarsk, Russian Federation); Siberian Federal University (Krasnoyarsk, Russian Federation); OCRID: 0000-0003-2541-9003; Boev, Nikita M. : Siberian Federal University (Krasnoyarsk, Russian Federation); Kirensky Institute of Physics, Federal Research Center KSC SB RAS (Krasnoyarsk, Russian Federation); Yaroslavtsev, Roman N. : Krasnoyarsk Science Center, Federal Research Center KSC SB RAS (Krasnoyarsk, Russian Federation); OCRID: 0000-0002-6791-7492; Tyumentseva, Anna V. : Krasnoyarsk Science Center, Federal Research Center KSC SB RAS (Krasnoyarsk, Russian Federation); OCRID: 0000-0002-2269-0298; Shokhrina, Anna O. : Krasnoyarsk Science Center, Federal Research Center KSC SB RAS (Krasnoyarsk, Russian Federation); Vorotynov, Alexandre M. : Kirensky Institute of Physics, Federal Research Center KSC SB RAS (Krasnoyarsk, Russian Federation); Iskhakov, Rauf S. : Kirensky Institute of Physics, Federal Research Center KSC SB RAS (Krasnoyarsk, Russian Federation); Samarkand State University named after Sharof Rashidov (Samarkand, Uzbekistan); OCRID: 0000-0001-6077-2211; Vazhenin, Irina G. : Siberian Federal University (Krasnoyarsk, Russian Federation); Kirensky Institute of Physics, Federal Research Center KSC SB RAS (Krasnoyarsk, Russian Federation); OCRID: 0000-0002-0271-5996; Raikher, Yurii L. : Institute of Continuous Media Mechanics Ural Branch of the Russian Academy of Sciences (Perm, Russian Federation); OCRID: 0000-0002-6167-6528
Keywords
nanoparticles; ferromagnetic resonance; hyperthermia
Abstract

γ-Fe2O3/SiO2 powders with an average particle size of 10 nm were studied using ferro- magnetic resonance (FMR). The frequency and temperature dependences of the FMR parameters were analyzed within the framework of the anisotropic superparamagnet model. Saturation magnetization M = 300 G, magnetic anisotropy constant K ≈ 1.8·105 erg/cm3, and exchange surface anisotropy con- stant Ku ≈ 1.2·102 erg/cm2 were determined for the prepared powders

Pages
528–536
EDN
XMBUXC
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/158647