Synthesis and characterizations of manganese ferrites for hyperthermia applications

Doaga, A.; Cojocariu, Alina Mihaela; Amin, Walid; Heib, Florian; Bender, Philipp; Hempelmann, Rolf; Caltun, Ovidiu Florin

doi:10.1016/j.matchemphys.2013.08.066

Cited by 126 publications

(63 citation statements)

References 29 publications

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“…We corrected both the heat losses to the environment and the heat transfer from the coil following the procedure described by Simeonidis et al 24 . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 The obtained SAR values are comparable with those reported for similar nanoparticles 9,25 . As observed, the SAR vs. H behavior tends to saturate in the case of the MFO sample, while it keeps increasing for the MFO-GO sample.…”

Section: = δ δTsupporting

confidence: 79%

Enhanced magnetic anisotropy and heating efficiency in multi-functional manganese ferrite/graphene oxide nanostructures

Giang

Tam

et al. 2016

Nanotechnology

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A promising nanocomposite material composed of MnFe2O4 (MFO) nanoparticles of ~17 nm diameter deposited onto graphene oxide (GO) nanosheets was successfully synthesized using a modified co-precipitation method. X-ray diffraction (XRD), transmission electron microscopy (TEM), and selected area electron diffraction (SAED) confirmed the quality of the synthesized samples. Fourier Transform Infrared (FTIR) measurements and analysis evidenced that the MFO nanoparticles were attached to the GO surface. Magnetic measurements and analysis using the modified Langevin model evidenced the superparamagnetic characteristic of both the bare MFO nanoparticles and the MFO-GO nanocomposite at room temperature, and an appreciable increase of the effective anisotropy for the MFO-GO sample. Magnetic hyperthermia experiments performed by both calorimetric and AC magnetometry methods indicated that relative to the bare MFO nanoparticles, the heating efficiency of the MFO-GO nanocomposite was similar at low ac fields (0-300 Oe) but became progressively larger with increasing ac fields (> 300 Oe). This has been related to the higher effective anisotropy of the MFO-GO nanocomposite. In comparison with the bare MFO nanoparticles, a smaller reduction in the heating efficiency was observed in the MFO-GO composites when MFO-GO were embedded in agar or when their concentration was increased, indicating that the GO helped minimize the physical rotation and aggregation of the MFO nanoparticles. These findings can be of practical importance in exploiting this type of nanocomposite for advanced hyperthermia. Magnetoimpedance-based biodetection studies also indicated that the MFO-GO nanocomposite could be used as a promising magnetic biomarker in biosensing applications.

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Section: = δ δTsupporting

confidence: 79%

Enhanced magnetic anisotropy and heating efficiency in multi-functional manganese ferrite/graphene oxide nanostructures

Giang

Tam

et al. 2016

Nanotechnology

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“…In contrast, a major limitation of heating small tissue volumes or single cells is the lack of sufficient MNP heating efficiency with clinically acceptable values of MNP concentration, field amplitude and frequency. Some attempts to circumvent this limitation have used dangerously high frequencies and/or larger quantities of particles3334. Table 1 shows a compilation of previously reported in vitro SPA measurements.…”

Section: Resultsmentioning

confidence: 99%

In Silico before In Vivo: how to Predict the Heating Efficiency of Magnetic Nanoparticles within the Intracellular Space

Sanz

Calatayud

Biasi

et al. 2016

Sci Rep

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This work aims to demonstrate the need for in silico design via numerical simulation to produce optimal Fe3O4-based magnetic nanoparticles (MNPs) for magnetic hyperthermia by minimizing the impact of intracellular environments on heating efficiency. By including the relevant magnetic parameters, such as magnetic anisotropy and dipolar interactions, into a numerical model, the heating efficiency of as prepared colloids was preserved in the intracellular environment, providing the largest in vitro specific power absorption (SPA) values yet reported. Dipolar interactions due to intracellular agglomeration, which are included in the simulated SPA, were found to be the main cause of changes in the magnetic relaxation dynamics of MNPs under in vitro conditions. These results pave the way for the magnetism-based design of MNPs that can retain their heating efficiency in vivo, thereby improving the outcome of clinical hyperthermia experiments.

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“…In recent years, magnetic nanoparticles (NPs) have attracted much research interest because of their interesting structures and advanced applications in magnetic fluid hyperthermia, imaging medical diagnosis and targeted drug delivery [1][2][3][4]. A wide range of magnetic NPs, including metals/alloys [1], metal oxides [2], ferrites [3], colossal magnetoresistive (CMR) materials [4] etc.…”

Section: Introductionmentioning

confidence: 99%

“…A wide range of magnetic NPs, including metals/alloys [1], metal oxides [2], ferrites [3], colossal magnetoresistive (CMR) materials [4] etc. with superior magnetic properties and suitable…”

Section: Introductionmentioning

confidence: 99%

Studies on characteristic properties of superparamagnetic La 0.67 Sr 0.33−x K x MnO 3 nanoparticles

Keshri

Wiśniewski

2016

Journal of Alloys and Compounds

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Synthesis and characterizations of manganese ferrites for hyperthermia applications

Cited by 126 publications

References 29 publications

Enhanced magnetic anisotropy and heating efficiency in multi-functional manganese ferrite/graphene oxide nanostructures

Enhanced magnetic anisotropy and heating efficiency in multi-functional manganese ferrite/graphene oxide nanostructures

In Silico before In Vivo: how to Predict the Heating Efficiency of Magnetic Nanoparticles within the Intracellular Space

Studies on characteristic properties of superparamagnetic La 0.67 Sr 0.33−x K x MnO 3 nanoparticles

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