Tuning the Magnetic Properties of Nanoparticles

By A. Kolhatkar, A. C. Jamison, D. Litvinov, Richard C. Willson, T. R. Lee. International Journal of Molecular Sciences, 2013

750 citations recorded by the source corpus.

The tremendous interest in magnetic nanoparticles (MNPs) is reflected in published research that ranges from novel methods of synthesis of unique nanoparticle shapes and composite structures to a large number of MNP characterization techniques, and finally to their use in many biomedical and nanotechnology-based applications. The knowledge gained from this vast body of research can be made more useful if we organize the associated results to correlate key magnetic properties with the parameters that influence them. Tuning these properties of MNPs will allow us to tailor nanoparticles for specific applications, thus increasing their effectiveness. The complex magnetic behavior exhibited by MNPs is governed by many factors; these factors can either improve or adversely affect the desired magnetic properties. In this report, we have outlined a matrix of parameters that can be varied to tune the magnetic properties of nanoparticles. For practical utility, this review focuses on the effect of size, shape, composition, and shell-core structure on saturation magnetization, coercivity, blocking temperature, and relaxation time.

Subfields: Biomaterials, Biomedical Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/bbd93636dcbaea2b3ac28768477cc540941ac47c

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Citations in the corpus

Bimetallic Nanoparticles: Enhanced Magnetic and Optical Properties for Emerging Biological Applications (2018, background): “On the other hand, Brownian relaxation dominates for larger particles and sizes greater than a single domain size; moreover, it is the critical factor in thermal applications [37,38].”
Recent progress and future challenges on the use of high performance magnetic nano-adsorbents in environmental applications (2014, background): “Despite the significant advantages offered by MNPs, it was not until the last half of the 20th century when scientists began to study their characteristic behavior [3].”
Nanoparticle classification, physicochemical properties, characterization, and applications: a comprehensive review for biologists (2022, neutral): “In comparison to the size parameter, there is significant less research on the effect of shape on the magnetic properties of NPs having the same volume [86].”
Magnetic Nanoparticles: Surface Effects and Properties Related to Biomedicine Applications (2013, background): “MNPs are of great interest for a wide range of disciplines, such as magnetic fluids [81], catalysis [82], biomedicine [75,83–85], magnetic energy storage [86], information storage and spintronics [87].”
Fe3O4 Nanoparticles: Structures, Synthesis, Magnetic Properties, Surface Functionalization, and Emerging Applications (2021, methodology): “In general, the magnetic properties of Fe3O4 NPs such as saturation magnetization (MS) and coercivity (HC) are strongly affected by four main factors including finite size effects, surface effects, magnetic anisotropy, and the degree of crystallinity [2,5,42,45,46].”