Effect of magnetic dipolar interactions on temperature dependent magnetic hyperthermia in ferrofluids

2017 ◽  
Vol 121 (2) ◽  
pp. 023901 ◽  
Author(s):  
Maheshika Palihawadana-Arachchige ◽  
Humeshkar Nemala ◽  
Vaman M. Naik ◽  
Ratna Naik
Keyword(s):  
Magnetic Hyperthermia ◽  
Dipolar Interactions ◽  
Temperature Dependent

Lorentz microscopy sheds light on the role of dipolar interactions in magnetic hyperthermia

Nanoscale ◽  
2015 ◽  
Vol 7 (17) ◽  
pp. 7717-7725 ◽  
Author(s):  
M. Campanini ◽  
R. Ciprian ◽  
E. Bedogni ◽  
A. Mega ◽  
V. Chiesi ◽  
...  
Keyword(s):  
Magnetic Hyperthermia ◽  
Dipolar Interactions ◽  
Magnetic Characterization ◽  
Lorentz Microscopy

Left: morphological and magnetic characterization of magnetite NPs. Right: Lorentz microscopy unveils the role of dipolar interactions in magnetic hyperthermia of superparamagnetic NPs.

scholarly journals Role of zinc substitution in magnetic hyperthermia properties of magnetite nanoparticles: interplay between intrinsic properties and dipolar interactions

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Yaser Hadadian ◽  
Ana Paula Ramos ◽  
Theo Z. Pavan
Keyword(s):  
Magnetic Nanoparticles ◽  
Magnetite Nanoparticles ◽  
Linear Response Theory ◽  
Magnetic Hyperthermia ◽  
Superior Performance ◽  
Dipolar Interactions ◽  
Intrinsic Properties ◽  
Specific Loss ◽  
Heating Efficiency ◽  
Specific Loss Power

AbstractOptimizing the intrinsic properties of magnetic nanoparticles for magnetic hyperthermia is of considerable concern. In addition, the heating efficiency of the nanoparticles can be substantially influenced by dipolar interactions. Since adequate control of the intrinsic properties of magnetic nanoparticles is not straightforward, experimentally studying the complex interplay between these properties and dipolar interactions affecting the specific loss power can be challenging. Substituting zinc in magnetite structure is considered as an elegant approach to tune its properties. Here, we present experimental and numerical simulation results of magnetic hyperthermia studies using a series of zinc-substituted magnetite nanoparticles (ZnxFe1-xFe2O4, x = 0.0, 0.1, 0.2, 0.3 and 0.4). All experiments were conducted in linear regime and the results were inferred based on the numerical simulations conducted in the framework of the linear response theory. The results showed that depending on the nanoparticles intrinsic properties, interparticle interactions can have different effects on the specific loss power. When dipolar interactions were strong enough to affect the heating efficiency, the parameter σ = KeffV/kBT (Keff is the effective anisotropy and V the volume of the particles) determined the type of the effect. Finally, the sample x = 0.1 showed a superior performance with a relatively high intrinsic loss power 5.4 nHm2kg−1.

Effects of dipolar interactions on the magnetic hyperthermia of Zn0.3Fe2.7O4 nanoparticles with different sizes

2020 ◽  
Author(s):  
Xiang Yu ◽  
Yan Mi ◽  
Li-Chen Wang ◽  
Zheng-Rui Li ◽  
Di-An Wu ◽  
...  
Keyword(s):  
Magnetic Hyperthermia ◽  
Dipolar Interactions

Dipolar interactions among magnetite nanoparticles for magnetic hyperthermia: a rate-equation approach

Nanoscale ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 4103-4121
Author(s):  
Gabriele Barrera ◽  
Paolo Allia ◽  
Paola Tiberto
Keyword(s):  
Magnetic Nanoparticles ◽  
Rate Equation ◽  
Magnetite Nanoparticles ◽  
Magnetic Hyperthermia ◽  
Heating Power ◽  
Dynamical Response ◽  
Equation Approach ◽  
Dipolar Interactions ◽  
Rate Equation Approach

Dipolar interactions strongly modify effective heating power and the dynamical response regime of magnetic nanoparticles.

Effect of Nanoclustering and Dipolar Interactions in Heat Generation for Magnetic Hyperthermia

Langmuir ◽  
2016 ◽  
Vol 32 (5) ◽  
pp. 1201-1213 ◽  
Author(s):  
Diego F. Coral ◽  
Pedro Mendoza Zélis ◽  
Marzia Marciello ◽  
María del Puerto Morales ◽  
Aldo Craievich ◽  
...  
Keyword(s):  
Heat Generation ◽  
Magnetic Hyperthermia ◽  
Dipolar Interactions

Investigation of magnetic properties of Fe3O4 nanoparticles using temperature dependent magnetic hyperthermia in ferrofluids

2014 ◽  
Vol 116 (3) ◽  
pp. 034309 ◽  
Author(s):  
H. Nemala ◽  
J. S. Thakur ◽  
V. M. Naik ◽  
P. P. Vaishnava ◽  
G. Lawes ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Fe3o4 Nanoparticles ◽  
Magnetic Hyperthermia ◽  
Temperature Dependent
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