Suitability of water based magnetic fluid with CoFe2O4 particles in hyperthermia

Skumiel, A.

doi:10.1016/j.jmmm.2006.03.045

Cited by 55 publications

(33 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…SLP is equal to c × ΔT/Δt × m sample /m particle , where c is the specific heat capacity of sample, m sample is the mass of sample, m particle is the mass of the magnetic material in specimen, and ΔT/ Δt is the slope of the heating curve. For nanoparticle in composites, the heat capacity of the system was correspond to (m particle × c particle + m composite × c composite + m air × c air )/(m particle + m composite ), where m is the mass of magnetic particles [4,16]. Figure 8 shows the calculated the SAR based on measured the temperature increasing ratio (ΔT/Δt) with the change of AMF, frequency and the increment of IONPs inclusion in PVDF fibrous composite.…”

Section: Resultsmentioning

confidence: 99%

Thermo-sensitive Electrospun Fibrous Magnetic Composite Sheets

Choi¹,

Kim²,

He³

et al. 2015

Journal of Magnetics

View full text Add to dashboard Cite

The PVDF fibrous composite filled with iron oxide nanoparticles were prepared by using the electrospinning technique. The electrospun composite have the thickness in the range of 60-80 µm with the average fibrous diameters of 500-900 nm. The magnetizations of PVDF fibrous composite filled with iron oxide nanoparticles showed 4.5 emu/g, 3.1 emu/g and 1.6 emu/g at 1.5 T of external magnetic field for 20 wt.%, 10 wt.% and 5 wt.% iron oxide nanoparticles, respectively. The heat elevation of the magnetic composite were measured under various AC magnetic fields, frequency and the ambient temperatures. The temperature reached up to 46.

show abstract

Section: Resultsmentioning

confidence: 99%

Thermo-sensitive Electrospun Fibrous Magnetic Composite Sheets

Choi¹,

Kim²,

He³

et al. 2015

Journal of Magnetics

View full text Add to dashboard Cite

show abstract

“…The temperature of the sample was monitored using a thermocouple (LT Lutron TM-917) [10,11] with an absolute uncertainty of 0.01 • C.…”

Section: Experimental Methodsmentioning

confidence: 99%

Thermophysical and Magnetic Properties of Carbon Beads Containing Cobalt Nanocrystallites

et al. 2011

View full text Add to dashboard Cite

Magnetic Co-beads were fabricated in the course of a three-step procedure comprising preparation of a metal-acrylamide complex, followed by frontal polymerization and finally pyrolysis of the polymer. The composites obtained were composed of cobalt nanocrystallites stabilized in a carbon matrix built of disordered graphite. The crystallite size, material morphology, fraction of the magnetic component, and thus the magnetic properties can be tailored by a proper choice of the processing variables. The samples were subjected to an alternating magnetic field of different strengths (H = 0 to 5 kA · m −1 ) at a frequency of f = 500 kHz. From the calorimetric measurements, we concluded that the relaxation processes dominate in the heat generation mechanism for the beads pyrolyzed at 773 K. For the beads pyrolyzed at 1073 K, significant values of magnetic properties, such as the coercive force and remanence give substantial contribution to the energy losses for hysteresis. The specific absorption coefficient (SAR) related to the cobalt mass unit for the 1073 K pyrolyzed beads (SAR = 1340 W · g −1 cobalt ) is in very good conformity with the results obtained by other authors. The effective density power loss, caused by eddy currents, can be neglected for heating processes applied in magnetic hyperthermia. The Co-beads can potentially be applied for hyperthermia treatment.

show abstract

“…The circuit was supplied with the sinusoidal signal with a frequency of 1500 kHz and an adjustable amplitude. Before heating started, the temperature of the sample was set to 25 • C. The temperature of the sample was controlled using a thermocouple (LT Lutron TM-917) with an uncertainty of 0.1 • C. A detailed description of the experimental setup for calorimetric measurements can be found in [10,11]. Figure 2 shows an exemplary plot of the time-dependent temperature rise of the MF2 sample for different values of the alternating magnetic field at a frequency of 1500 kHz.…”

Section: Methodsmentioning

confidence: 99%

Heating Characteristics of Transformer Oil-Based Magnetic Fluids of Different Magnetic Particle Concentrations

2010

View full text Add to dashboard Cite

The heating ability of mineral oil-based magnetic fluids with different magnetic particle concentrations is studied. The calorimetric measurements were carried out in an alternating magnetic field of 500 A · m −1 to 2500 A · m −1 amplitude and of 1500 kHz frequency. The revealed H n law-type dependence of the temperature increase rate, (dT /dt) t=0 , on the amplitude of the magnetic field indicates the presence of superparamagnetic and partially ferromagnetic particles in the tested samples since n > 2. The specific absorption rate (SAR) defined as the rate of energy absorption per unit mass increases with a decrease of the volume fraction of the dispersed phase. This can be explained by the formation of aggregates in the samples with a higher concentration of magnetic particles.

show abstract

Suitability of water based magnetic fluid with CoFe2O4 particles in hyperthermia

Cited by 55 publications

References 9 publications

Thermo-sensitive Electrospun Fibrous Magnetic Composite Sheets

Thermo-sensitive Electrospun Fibrous Magnetic Composite Sheets

Thermophysical and Magnetic Properties of Carbon Beads Containing Cobalt Nanocrystallites

Heating Characteristics of Transformer Oil-Based Magnetic Fluids of Different Magnetic Particle Concentrations

Contact Info

Product

Resources

About