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Journal of Applied Physics / Volume 111 / Issue 7 / PROCEEDINGS OF THE 56TH ANNUAL CONFERENCE ON MAGNETISM AND MAGNETIC MATERIALS / Soft Magnetic Materials

J. Appl. Phys. 111, 07A314 (2012); http://dx.doi.org/10.1063/1.3672850 (3 pages)

Analysis of heating effects (magnetic hyperthermia) in FeCrSiBCuNb amorphous and nanocrystalline wires

C. Gómez-Polo, S. Larumbe, J. I. Pérez-Landazábal, and J. M. Pastor

Depto. de Física, Universidad Pública de Navarra, Campus de Arrosadía, 31006 Pamplona, Spain

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(Received 22 September 2011; accepted 27 October 2011; published online 16 February 2012)

The induction heating effects in amorphous and nanocrystalline wires, Fe73.5-xCrxSi13.5Cu1B9Nb3 (x = 3, 7, and 10), are analyzed in this work. In these alloys, the Curie temperature of the amorphous phase, TC, can be tailored through the Cr content of the alloy or the volume crystalline fraction after nanocrystallization. Four samples were selected; amorphous with x = 0 and 10 and nanocrystalline x = 7 with different crystalline fractions. The Curie temperature of the residual amorphous phase, TCa, was experimentally determined by the temperature dependence of the self-inductance of the samples. The analysis of the frequency dependence of the complex magnetic susceptibility enabled the estimation of the magnetic power losses in the samples. The heating effects on the wires were analyzed under the application of an ac magnetic field employing a home-made hyperthermia set-up. A single piece of a wire was immersed in a water bath (initial temperature from 291 K to 325 K) and subjected to the ac magnetic field. The specific absorption rate (SAR) was estimated through the initial slope of the temperature increase as a function of time. Maximum SAR values were obtained in the amorphous sample (x = 3) with the highest TC and enhanced magnetic power losses. In the nanocrystalline samples (x = 7), the detected heating effects above TCa are interpreted as a consequence of the magnetization process of the ferromagnetic grains. However, in spite of the low SAR displayed by the amorphous wire with TC ≈ 300 K (x = 10), interesting self-regulated characteristics are observed in this sample.

© 2012 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL PROCEDURES
  3. RESULTS AND DISCUSSION
  4. CONCLUSIONS

KEYWORDS, PACS, and IPC

Keywords

amorphous magnetic materials, biological effects of fields, biomagnetism, biomedical materials, boron alloys, chromium alloys, copper alloys, Curie temperature, ferromagnetic materials, hyperthermia, induction heating, iron alloys, magnetic leakage, magnetic particles, magnetic susceptibility, magnetocaloric effects, nanomedicine, nanowires, niobium alloys, silicon alloys

PACS

  • 87.85.Rs

    Nanotechnologies-applications

  • 87.19.Pp

    Biothermics and thermal processes in biology

  • 87.50.C-

    Static and low-frequency electric and magnetic fields effects

  • 87.85.J-

    Biomaterials

  • 75.30.Kz

    Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)

  • 75.50.Tt

    Fine-particle systems; nanocrystalline materials

International Patent Classification (IPC)

  • C22C38/00

    Ferrous alloys, e.g. steel alloys

  • A61N5/00

    Radiation therapy

  • B82B1/00

    Nano-structures

  • C22C9/00

    Alloys based on copper

  • H01F1/00

    Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties

  • H05B6/02

    Induction heating

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3672850

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

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

For access to fully linked references, you need to log in.
    K. J. Miller, K. N. Collier, H. B. Soll-Morris, R. Swaminathan, and M. E. McHenry, J. Appl. Phys. 105, 07E714 (2009)JAPIAU00010500000707E714000001.

    K. L. McNemy, Y. Kim, D. E. Laughlin, and M. E. McHenry, J. Appl. Phys. 107, 09A312 (2010)JAPIAU00010700000909A312000001.

    K. J. Miller, A. Colletti, P. J. Papi, and M. E. McHenry, J. Appl. Phys. 107, 09A313 (2010)JAPIAU00010700000909A313000001.

    I. Baker, Q. Zeng, W. Li, and C. R. Sullivan, J. Appl. Phys. 99, 08H106 (2006)JAPIAU00009900000808H106000001.

    C. Gómez-Polo, J. I. Pérez-Landazábal, V. Recarte, M. Vázquez, and A. Hernando, Phys. Rev. B 70, 094412 (2004)..

    A. Hernando, P. Marín, M. Vázquez, J. M. Barandiarán, and G. Herzer, Phys. Rev. B 58, 366 (1998).


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