Heating of Zn-Substituted Manganese Ferrite Magnetic Nanoparticles in Alternating Magnetic Field

T.M. Elkhova; A.K. Yakushechkina; A.S. Semisalova; Yurii K. Gun’ko; Yu.I. Spichkin; A.P. Pyatakov; K.I. Kamilov; Nikolai S. Perov; A.M. Tishin

doi:10.4028/www.scientific.net/SSP.233-234.761

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HomeSolid State PhenomenaSolid State Phenomena Vols. 233-234Heating of Zn-Substituted Manganese Ferrite...

Heating of Zn-Substituted Manganese Ferrite Magnetic Nanoparticles in Alternating Magnetic Field

Abstract:

In this report, were studied the heating capability of magnetic nanoparticles (MNps) made from Zn-substituted manganese ferrite compounds Zn_xMn_1-xFe₂O₄ with Zn content varying from 0% to 90%. The MNps of diameter 5-25 nm were synthesized by co-precipitation of metal salt solution with NaOH solution. It was shown, that specific absorption rate (SAR) for the compound with Zn content of 20% is bigger than the other ones exhibited 1.5 W/g. Also SAR for the magnetic liquids made of the MNps shows bigger SAR values, which indicates the Brown relaxation mechanism in the system.