Hyperthermia application of zinc doped nickel ferrite nanoparticles. (December 2017)

• Record Type: Journal Article
• Authors: Ghayour, Hamid; Abdellahi, Majid; Ozada, Neriman; Jabbrzare, Saeid; Khandan, Amirsalar
• Is Part Of: Journal of physics and chemistry of solids. Volume 111(2017)
• Page Start: 464
• Page End: 472
• Publication Date: 2017-12
• Subjects: Hyperthermia -- Nanoparticles -- Ferrites -- SAR; Solids -- Periodicals; Solides -- Périodiques; Solids; Periodicals; 530.41
• DOI: 10.1016/j.jpcs.2017.08.018
• Languages: English
• ISSNs: 0022-3697

Abstract

Abstract: This work was written with the aim of preparing zinc doped nickel ferrite (Ni1-x Znx Fe2 O4 : x = 0.25, x = 0.5 and x = 0.75) nanoparticles via mechanical milling and subsequent sintering. The mobility of Zn 2+ ions within the lattice structure of NiFe2 O4 ferrite with an inverse spinel structure was investigated and the resultant magnetic properties were discussed. Variation of magnetization of Ni1-x Znx Fe2 O4 (x = 0.25, x = 0.5 and x = 0.75) under a DC magnetic field was studied and the obtained results were used to justify the initial heating rate of the samples under an AC magnetic field. According to the results, the Brown effect, as a heating mechanism in soft ferromagnetic and super paramagnetic materials, did not have a decisive role in the heat release of magnetic nanoparticles. In return, the Néel effect was consistently more active as a result of increasing the zinc content. The aggregate analysis showed that the saturation magnetization played the most important role in the minimum value of the specific absorption rate of Ni0.25 Zn0.75 Fe2 O4 samples. Highlights: For all Zn-containing samples, we can neglect the Bowen effect as a heat production mechanism. The mobility of Zn 2+ ions within the lattice structure of NiFe2 O4 ferrite was investigated. The variation of the magnetization of the Ni1-x Znx Fe2 O4 under the DC magnetic field was studied. M s had the most important role in the Ni0.25 Zn0.75 Fe2 O4 samples to give a minimum value of SAR.