Some applications of ferrofluid magnetic colloids

Kaiser, Robert; Miskolczy, G.

doi:10.1109/tmag.1970.1066834

Cited by 55 publications

(29 citation statements)

References 7 publications

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“…In such systems, one may expect at low temperatures a T 2 dependence of ρ(T ), which is followed by a range of a linear behavior and then replaced by a logarithmic variation ρ ∝ log T above the so-called spin fluctuation temperature T sf . [29][30][31] At high temperatures, the resistivity is expected to approach a spin disorder (unitarity) limit changing with the temperature as ρ ∝ [1 − (T sf /T )]. As may be inferred from Fig.…”

Section: E Electrical Resistivitymentioning

confidence: 99%

Magnetic and electrical transport behavior in the crystallographically disordered compound U2CoSi3

2011

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A single crystal of the uranium-based ternary silicide U 2 CoSi 3 has been investigated by means of magnetic, heat capacity, and electrical resistivity measurements, performed in wide ranges of the temperature and magnetic field. The compound crystallizes with a hexagonal AlB 2 -type structure with crystallographic disorder in the nonmagnetic atom sublattice. The results indicate the formation at low temperatures of a ferromagnetic clusterglass state, which likely originates from crystallographic disorder in the nonmagnetic atom sublattice of the hexagonal AlB 2 -type unit cell. The low-temperature behavior of the electrical resistivity of U 2 CoSi 3 can be adequately described in terms of theories developed for disordered systems.

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Section: E Electrical Resistivitymentioning

confidence: 99%

Magnetic and electrical transport behavior in the crystallographically disordered compound U2CoSi3

2011

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“…Therefore, the iron oxide molecules used to manufacture SPIONs occur naturally in the earth's crust, for research and clinical applications they must be synthesized under specific conditions in order to yield compounds of high purity and the appropriate size. 41 Kaiser and Miskolczy 44 were the first to report the synthesis of ferrofluidic magnetic colloids. Subsequently, other research groups reported the production of other compounds, although these compounds were not intended for biomedical applications.…”

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confidence: 99%

Tracking stem cells with superparamagnetic iron oxide nanoparticles: perspectives and considerations

Jasmin¹,

Souza²,

Louzada³

et al. 2017

IJN

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Superparamagnetic iron oxide nanoparticles (SPIONs) have been used for diagnoses in biomedical applications, due to their unique properties and their apparent safety for humans. In general, SPIONs do not seem to produce cell damage, although their long-term in vivo effects continue to be investigated. The possibility of efficiently labeling cells with these magnetic nanoparticles has stimulated their use to noninvasively track cells by magnetic resonance imaging after transplantation. SPIONs are attracting increasing attention and are one of the preferred methods for cell labeling and tracking in preclinical and clinical studies. For clinical protocol approval of magnetic-labeled cell tracking, it is essential to expand our knowledge of the time course of SPIONs after cell incorporation and transplantation. This review focuses on the recent advances in tracking SPION-labeled stem cells, analyzing the possibilities and limitations of their use, not only focusing on myocardial infarction but also discussing other models.

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“…5(a-d) [20][21][22] . It can be seen from values is due to the reduction in magnetic dipole-dipole interaction and formation of the non-magnetic coating layer.…”

Section: Magnetic Properties Studymentioning

confidence: 99%

Titania-Coated Magnetite and Ni-Ferrite Nanocomposite-Based RADAR Absorbing Materials for Camouflaging Application

Das

Nayak

Sahu

et al. 2015

Polymer-Plastics Technology and Engineering

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A novel core-shell structured nano-composite material, based on Titanium dioxide coated magnetite and Ni-Ferrite has been prepared for RADAR absorbing application in the XBand region. Coating of magnetic particles with TiO 2 was carried out by insitu hydrolysis of Titanium tetrabutoxide and composite absorber sheets were prepared with epoxy resin.The morphological characterization of the magnetic particles was studied with Field Emission Scanning electron Microscope, Transmission Electron Microscope, X-Ray diffraction and vibrating sample magnetometer analysis techniques. The measurement results confirmed the coating of magnetic particles with TiO 2 and reduction of the magnetization of magnetite and Ni-ferrite nanoparticles compared with the uncoated ferrite nanoparticles. Distribution of particle inside the matrix was studied with Scanning Electron Microscope. Microwave absorption study in X-Band (8-12GHz) region carried out with Vector Network Analyzer. Results showed reflection loss values of -26.5db at 9.08 GHz for the magnetite coated with Titanium Dioxide/conducting Carbon black containing sample which increased to -45.7db at 9.13 GHz for the Ni-ferrite coated with TiO 2 /conducting Carbon black formulation. It was observed that coating of magnetic particles resulted in the improvement in the microwave absorption.

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Some applications of ferrofluid magnetic colloids

Cited by 55 publications

References 7 publications

Magnetic and electrical transport behavior in the crystallographically disordered compound U2CoSi3

Magnetic and electrical transport behavior in the crystallographically disordered compound U2CoSi3

Tracking stem cells with superparamagnetic iron oxide nanoparticles: perspectives and considerations

Titania-Coated Magnetite and Ni-Ferrite Nanocomposite-Based RADAR Absorbing Materials for Camouflaging Application

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