Hyperthermia application of zinc doped nickel ferrite nanoparticles

Ghayour, Hamid; Abdellahi, Majid; Özada, Neriman; Jabbrzare, Saeid; Khandan, Amirsalar

doi:10.1016/j.jpcs.2017.08.018

Cited by 103 publications

(32 citation statements)

References 43 publications

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“…However, the heat generated in the samples calcined at 900°C is higher than other samples which can be attributed to the higher saturation magnetization (Figure B). It was reported that the specific loss power of magnetic nanoparticles rises with increasing Ms . However, there are some conflict reports on the negative effect of Ms on the heat generation .…”

Section: Resultsmentioning

confidence: 99%

Mg_0.5Ni_0.5Fe₂O₄ nanoparticles as heating agents for hyperthermia treatment

Hassanzadeh-Tabrizi

2018

J Am Ceram Soc

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In the present work, Mg 0.5 Ni 0.5 Fe 2 O 4 nanopowders were prepared by a sol-gel combustion method. The magnetic properties, heat generation ability in an AC magnetic field and cytotoxicity of the mixed ferrite nanopowders were investigated. The results showed that the powders have crystalline spinel structure with a particle size in the range of 20-90 nm. Maximum saturation magnetization (Ms) of 51 emu/g was obtained for the Mg 0.5 Ni 0.5 Fe 2 O 4 nanoparticles calcined at 900°C. The results showed that, the coercivity (Hc) of the Mg 0.5 Ni 0.5 Fe 2 O 4 initially increases up to 700°C and then decreases with increasing temperature, whereas the Ms of the samples continuously increases. The Mg 0.5 Ni 0.5 Fe 2 O 4 sample exhibited a temperature increase up to 45°C during 10 minutes in the exposure of magnetic field of 200 Oe. By increasing the viscosity of ferrofluid, the heat generation ability of nanoparticles reduced up to 9% at magnetic field of 200 Oe. Cell compatibility of the ferrite powders was studied by MTT assay using MG63 cell line proliferation. MTT results showed that calcination temperature of the Mg 0.5 Ni 0.5 Fe 2 O 4 nanoparticles significantly affects the cell compatibility.

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Section: Resultsmentioning

confidence: 99%

Mg_0.5Ni_0.5Fe₂O₄ nanoparticles as heating agents for hyperthermia treatment

Hassanzadeh-Tabrizi

2018

J Am Ceram Soc

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“…These values show significant decrease compared to that obtained from the synthesis of zinc cobalt ferrite by Mohammad Sajjad Hossain et al [16] (HC=726.13 Oe). This reduction is attributed to the movement of Co 2+ ions to the tetrahedral position [3]. In addition, the residual ratio (R=Mr/MS) in the synthesized powders was about 0.1, which means easy change of magnetization path to nearest easy axis of magnetic path after removal of external magnetic field.…”

Section: Magnetic Propertiesmentioning

confidence: 90%

“…It is well known that the intensity of X-rays scattered from the planes is related to their atomic density. In addition, it has been reported that in solid solutions, including spinel ferrites the intensities depend on the cationic distribution of the elements in different positions [3]. Therefore, for each XRD spectrum, the peak intensity ratio of plane (440) to plane (220) ‫؛‬ I(440) / I(220) is calculated for each prepared sample that will be listed in Table 1.…”

Section: Xrd Analysismentioning

confidence: 99%

“…In normal spinel, all 8 divalent elements are in tetrahedral positions and all 16 thrivalent elements are in octahedral spaces. Whereas in the inverse spinel, half of the 3-valent elements sit in tetrahedral spaces and the other half placed in the cathedral positions, and the 2-valence elements also occupy the octahedral spaces [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…. In addition, according to Wuhlfarth's theory, anisotropic constant (K) and magnetic moment (nB) for the formula unit are obtained by Equations(3)(4)(5)(6)(7)(8) and(3)(4)(5)(6)(7)(8)(9) [4,16,39]:…”

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Effect of pH Value on Synthesis and Properties of Zinc Cobalt Ferrite Nano Powders Prepared via Co-Precipitation Method

Shahbahrami¹,

Rabiee²,

Shidpoor³

2020

Preprint

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The effect of pH value on the synthesis of zinc cobalt ferrite nano powder via co-precipitation method was investigated. Zinc cobalt ferrite (Co0.6Zn0.4Fe2O4) precipitated using a solution of nitrate raw materials under different pHs (pH=8, 10, 11, 12 and 14) and calcined at 750 °C for 2 hours. The obtained nano-powders were characterized by X-ray diffraction (XRD), Williamson-Hall relations and Extrapolate functions, field emission scanning electron microscopy (FESEM) and vibrating sample magnetometer (VSM) measurements. The amount of pH had a significant effect on the structural and magnetic properties of the synthesized powders. At pHs 8 and 10, a tensile strain and above that a compressive strain was created in the system. By changing the tensile strain to compression the crystallite diameter increased, so that the crystallite diameter increased from 19.3 nm at pH 8 to 47.8 nm for pH =11. The HC of the all samples was in the range of 140-150 Oe. The saturation magnetization, anisotropy and Bohr magneton constants were 100.38 emu/gr, 15357.70 erg/Oe and 4.27, respectively for the synthesized sample at pH=11, which were higher than the other samples. These changes are due to the effect that pH has on the parameters of the crystallite diameter, particle size and also on the cation distribution of the ions in tetrahedral/octahedral spaces.

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