Magnetic Properties of Manganese Ferrite (MnFe2o4) Nanoparticles Synthesized by Co-Precipitation Method

Abstract

N anostructured transition metal oxides, also known as spinel ferrites, are commonly studied due to their potential use in a variety of biomedical applications such as magnetic resonance imaging, hyperthermia and targeted drug delivery [1]. The general formula for ferrite family is given as MFe 2 O 4 ; M=Zn, Ni, Co, Mn, where depending on the Curie temperature, magnetic anisotropy and magnetic moment of the substitution metal M, the overall magnetic properties of ferrites can be adjusted in order to optimize their performance in these biomedical applications. In this manner, manganese ferrite MnFe 2 O 4 is a good candidate with its relatively high magnetization and biocompatibility [2,3]. For these reasons, nanosized MnFe 2 O 4 particles were deeply investigated in literature, where particles were synthesized with different techniques and their surfaces were functionalized with different capping agents.

Effects of annealing on the structural and magnetic properties of flame spray pyrolyzed MnFe2O4 nanoparticles

“…have gained great interest due to their excellent properties which leads to many attracting biological and industrial applications. [1][2][3][4] Among the nanoparticles result in many diversified applications such as magnetic resonance imaging, 11 microwave devices, 12 hyperthermia treatments, 13 sensors, 14 water treatment, 1 and catalysis. 15 The properties of MnFe 2 O 4 nanoparticles strongly depend on the morphology, composition and size which can be controlled in the production processes.…”

“…9,16 In the past decade, a number of ways for fabricating MnFe 2 O 4 nanoparticles have been reported in order to achieve materials of the desired physical and magnetic properties. 17 Up to now, the methods for production MnFe 2 O 4 nanoparticles are co-precipitation, 4 sol-gel combustion, 18 thermal decomposition, 19 microemulsions, 20 mechanochemical, 21 hydrothermal, 10 high-energy milling, 22 reverse micelles 23 and sonochemical, 24 etc. Apart from aforementioned methods, flame spray pyrolysis (FSP) is a promising method as superior in yields, highly controllable, and high production rate.…”

“…Spinel ferrites with the general chemical formula given as MFe 2 O 4 where M denoted as divalent metal cation (Fe, Ni, Zn, Co, Mn, etc.) have gained great interest due to their excellent properties which leads to many attracting biological and industrial applications 1–4 . Among the spinel ferrites, manganese ferrites (MnFe 2 O 4 ) have deeply investigated in the literature.…”

Structure and properties of Co-=SUB=-x-=/SUB=-Mn-=SUB=-1-x-=/SUB=-Fe-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=- nanoparticles depending on the amount of Co ions (0≤ x≤ 1.0)

“…Extensive studies of SF MNPs have resulted in the fact that the chemical composition and synthesis methods significantly affect not only particle sizes and an SF structure, but electric, optic and magnetic SF properties, such as magnetization, anisotropy, coercive and hyperfine fields [6,[8][9][10][11]. By technological methods and ion alloying of the metals, it is possible to control ion distribution across nonequivalent positions of the crystal lattice, a structure of a surface layer, a type of crystal faceting of particles, and therefore, to change and adapt their physical properties for various purposes and, consequently, to synthesize the SF MNPs with required specific properties [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. For biological compatibility of the MNPs surfaces of the SF particles, such as MnFe 2 O 4 , MgFe 2 O 4 , CoFe 2 O 4 , ZnFe 2 O 4 , can be easily modified and/or properly functionalized without damaging their external magnetic field's controllability to produce good-quality materials to amplify contrast of magnetic resonance imaging images and treatment of malignant tumors by means of magnetic hyperthermia.…”

“…For biological compatibility of the MNPs surfaces of the SF particles, such as MnFe 2 O 4 , MgFe 2 O 4 , CoFe 2 O 4 , ZnFe 2 O 4 , can be easily modified and/or properly functionalized without damaging their external magnetic field's controllability to produce good-quality materials to amplify contrast of magnetic resonance imaging images and treatment of malignant tumors by means of magnetic hyperthermia. The above-listed advantages of the SF MNPs, as well as their lower toxicity, lower values of saturation magnetization, high corrosion resistance, magnetocrystalline anisotropy and magnetic susceptibility, minor coercivity and high stability and colloidal dispersibility in saline liquids make the SF MNPs especially promising for biomedicine [8][9][10][11][12][13][14][15][16][17][18][19][20][21].…”