Fe3Si nanoparticles for alternating magnetic field heating

Ying Jing; Shi Hai He; Jian Ping Wang

doi:10.1007/s11051-013-1517-5

Fe₃Si nanoparticles for alternating magnetic field heating

Ying Jing, Shi Hai He, Jian Ping Wang

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

In this paper, Fe₃Si nanoparticles were fabricated and studied for alternating magnetic field heating. High-magnetic-moment and large magnetic anisotropy energy barrier were found for those particles through the temperature-dependent magnetic characterization and dynamic coercivity analysis. Although a large hysteresis area was expected for the nanoparticles to generate appreciable heat, it is not necessary so when only the criteria of saturation magnetization and magnetic anisotropy energy barrier are fulfilled. Heating performance of Fe₃Si nanoparticles was investigated. Field-dependent magnetic characterization unravels the fact that sufficient switching of magnetic nanoparticles is critical for heat generation.

Original language	English (US)
Article number	1517
Journal	Journal of Nanoparticle Research
Volume	15
Issue number	4
DOIs	https://doi.org/10.1007/s11051-013-1517-5
State	Published - Apr 2013

Bibliographical note

Funding Information:
Acknowledgments This work was partially supported by National Science Foundation BME 0730825 and Institute of Engineering in Medicine at University of Minnesota. Parts of this work were carried out using the characterization facility which receives partial support from NSF through the NSF Minnesota MRSEC Program under Award Number DMR-0819885 and NNIN program. The authors thank Dr. Yunhao Xu for fruitful discussions.

Keywords

Alternating magnetic field heating
Dynamic coercivity
High-magnetic-moment nanoparticle
Hysteresis loss
Magnetic hyperthermia

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AB - In this paper, Fe3Si nanoparticles were fabricated and studied for alternating magnetic field heating. High-magnetic-moment and large magnetic anisotropy energy barrier were found for those particles through the temperature-dependent magnetic characterization and dynamic coercivity analysis. Although a large hysteresis area was expected for the nanoparticles to generate appreciable heat, it is not necessary so when only the criteria of saturation magnetization and magnetic anisotropy energy barrier are fulfilled. Heating performance of Fe3Si nanoparticles was investigated. Field-dependent magnetic characterization unravels the fact that sufficient switching of magnetic nanoparticles is critical for heat generation.

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