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Applied Physics Letters / Volume 98 / Issue 24 / NANOSCALE SCIENCE AND DESIGN

Appl. Phys. Lett. 98, 243119 (2011); http://dx.doi.org/10.1063/1.3600633 (3 pages)

Adiabatic magnetothermia makes possible the study of the temperature dependence of the heat dissipated by magnetic nanoparticles under alternating magnetic fields

Eva Natividad1, Miguel Castro1, and Arturo Mediano2

1Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC–Universidad de Zaragoza, Sede Campus Río Ebro, María de Luna, 3, 50018 Zaragoza, Spain
2Grupo de Electrónica de Potencia y Microelectrónica (GEPM), Instituto de Investigación en Ingeniería de Aragón, Universidad de Zaragoza, María de Luna, 3, 50018 Zaragoza, Spain

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(Received 1 April 2011; accepted 13 May 2011; published online 17 June 2011)

Determining the low-temperature dependence of the specific absorption rate (SAR) of magnetic nanoparticles under alternating magnetic fields with amplitudes and frequencies similar to those used in applications such as magnetic fluid hyperthermia, becomes essential when theoretical expressions fail to extrapolate the behavior of nanoparticle arrangements. We prove that adiabatic magnetothermia is capable of providing SAR(T) data displaying an excellent continuity with those obtained from magnetic measurements at lower ac-field amplitudes and frequencies.

© 2011 American Institute of Physics

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KEYWORDS and PACS

Keywords

biomagnetism, biothermics, cooling, magnetic fluids, magnetic particles, nanomedicine, nanoparticles

PACS

  • 87.19.Pp

    Biothermics and thermal processes in biology

  • 87.50.C-

    Static and low-frequency electric and magnetic fields effects

  • 87.85.Qr

    Nanotechnologies-design

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3600633

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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    References

    E. Natividad, M. Castro, and A. Mediano, Appl. Phys. Lett. 92, 093116 (2008)APPLAB000092000009093116000001.

    T. Jonsson, P. Nordblad, and P. Svedlindh, Phys. Rev. B 57, 497 (1998).


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