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Title: Ferromagnetic glass-coated microwires with good heating properties for magnetic hyperthermia

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep39300· OSTI ID:1361637
 [1];  [2];  [3];  [4];  [5];  [6];  [6];  [7]
  1. Univ. of South Florida, Tampa, FL (United States); Polytechnic Univ. of Valencia (UPV) (Spain)
  2. Univ. of South Florida, Tampa, FL (United States); BCMaterials Edificio (Spain)
  3. Polytechnic Univ. of Valencia (UPV) (Spain)
  4. Univ. of Basque Country (Spain)
  5. BCMaterials Edificio (Spain); Univ. of Basque Country (Spain)
  6. Univ. of South Florida, Tampa, FL (United States)
  7. Polytechnic Univ. of Valencia (UPV) (Spain); Basque Foundation for Science, Bilbao (Spain)

The heating properties of Fe71.7Si11B13.4Nb3Ni0.9 amorphous glass-coated microwires are explored for prospective applications in magnetic hyperthermia. We show that a single 5 mm long wire is able to produce a sufficient amount of heat, with the specific loss power (SLP) reaching a value as high as 521 W/g for an AC field of 700 Oe and a frequency of 310 kHz. The large SLP is attributed to the rectangular hysteresis loop resulting from a peculiar domain structure of the microwire. For an array of parallel microwires, we have observed an SLP improvement by one order of magnitude; 950 W/g for an AC field of 700 Oe. The magnetostatic interaction strength essential in the array of wires can be manipulated by varying the distance between the wires, showing a decreasing trend in SLP with increasing wire separation. The largest SLP is obtained when the wires are aligned along the direction of the AC field. The origin of the large SLP and relevant heating mechanisms are discussed.

Research Organization:
Univ. of South Florida, Tampa, FL (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
FG02-07ER46438
OSTI ID:
1361637
Journal Information:
Scientific Reports, Vol. 6, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

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Cited By (4)

Magnetic properties of “thick” glass-coated Fe-rich microwires journal March 2019
Colossal heating efficiency via eddy currents in amorphous microwires with nearly zero magnetostriction journal January 2020
Effect of annealing on magnetic properties of Ni–Mn–Ga glass-coated microwires journal May 2018
Magnetic and structural properties of glass-coated Heusler-type microwires exhibiting martensitic transformation journal January 2018

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