Diffusion of Magnetic Nanoparticles Within a Biological Tissue During Magnetic Fluid Hyperthermia

Magnetic Hyperthermia using Cobalt Ferrite Nanoparticles: The Influence of Particle Size

“…There exist at least four different mechanisms by which magnetic materials can generate heat in an alternating field, which depend in different manners on the applied magnetics alternative field strength and frequency. The magnetic losses to be utilized for heating arise [6][7][8][9][10][11][12]. If a magnetic sample is placed in a liquid of low viscosity and exposed to an alternating field, the sample reacts with oscillating or rotating movements, as a whole (because of the torque exerted on the magnetic moment by the external AC magnetic field), towards the field with the moment locked along the crystal under the effect of a thermal force against a viscous drag in a suspending medium, in order to achieve the position of lowest energy, which lead to losses in the surrounding liquid [12][13][14].…”

“…In addition to the precise control on the composition and structure of CoFe 2 O 4 [10,13,[18][19][20][21]. CoFe 2 O 4 particle size increase with increasing annealing temperature due to more metal ions are produce which in turn increases the particle sizes, tiny amount of agglomeration is observed at higher temperature due to growing distribution of particle size [6].…”

“…In this approach MNPs are firstly introduced into the desired tissues and then guided by an external magnetic field, an externally applied oscillating magnetic field induces the hyperthermia [5]. The application of MNPs offers the possibility of a self-limitation of the temperature enhancement by using a magnetic material with suitable Curie temperature, Such MNPs can bind to drugs, enzymes, proteins, nucleotides, or antibodies and can be directed to an organ, tissue, or tumor using an external magnetic field [6,7]. Ferrites are magnetic ceramics of great importance in the production of electronic components since they reduce energy losses which caused by induced currents acting as electric insulators.…”

Magnetic mediators for ultrasound theranostics

“…There exist other mechanisms able to produce heat; however, in the case of MH, the temperature rise is induced at the nanoscale and the results are visible at the macroscale. This feature is crucial as the major aim of MH is to weaken, sensitize, or even ablate tumors from the inside 16 , 69 , 87 , 88 .…”

Synthesis and Characterization of CeGdZn-Ferrite Nanoparticles as Magnetic Hyperthermia Application Agents

“…e materials' use with the Curie temperature ranging from 41 to 46°C protects against overheating of normal cells, due to the decrease of magnetic coupling in the paramagnetic regime [15]. It is because it uses the external magnetic field for binding of proteins, enzymes, and drugs as well as antibodies with tissues, tumor, or more [16]. Kmita et al [17] have shown an increased interest for the ferrite nanoparticles using controllable morphology and crystal structure based on their escalated application in fundamental as well as industrial use.…”