Magnetic Properties of Glass-Coated Amorphous and Nanocrystalline FeMoBCu Microwires

Klein, Peter; Varga, R.; Škorvánek, I.; Kammouni, Rhimou El; Vázquez, M.

doi:10.1109/tmag.2014.2323483

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…a). It is lower (in comparison to the previously studied FeMo 5 B 18 Cu 1 microwire) due to the higher amount of molybdenum . The increase of the magnetization above 775 K is caused by the formation of nanocrystalline α‐Fe grains with a Curie temperature over 975 K.…”

Section: Resultsmentioning

confidence: 69%

“…The Curie temperature of the amorphous phase increases due to the presence of nanocrystalline grains. It is worth noting that the crystallization temperature of ∼775 K is much higher in comparison to the previously studied FeMo 5 B 18 Cu 1 microwire, most probably due to stronger stresses arising from the glass coating .…”

Section: Resultsmentioning

confidence: 70%

“…) based on a glass‐coated microwire (see Fig. ) with enhanced sensitivity in the narrow temperature range from 308 up to 315 K. Recently, FeMo 5 BCu microwires with a low Curie temperature of ∼443 K were studied, and two opposite effects were observed: (i) the switching field in amorphous samples notably decreased after stress relaxation with temperature due to the low Curie temperature and (ii) the effect of superparamagnetism (or a drastic increase in the switching field) was observed in samples in the early stage of the nanocrystallization process (the observed variation of the switching field was more than 400%) .…”

Section: Introductionmentioning

confidence: 99%

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Addition of molybdenum into amorphous glass‐coated microwires usable as temperature sensors in biomedical applications

Hudák¹,

Varga

Poláček³

et al. 2015

Physica Status Solidi (a)

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Compared to other sensors, such as radio‐frequency identification sensors, microwires have a significant advantage due to their small dimensions and contact‐free reading. The most important advantage is that a microwire is considered to be a biocompatible material due to the glass‐coating insulator. This is particularly applicable in various titanium implants (dental, knee joint, replacement of damaged skull part, repair of the femur, etc.). The temperature dependence of the switching field can be employed to monitor inflammatory processes. In this contribution we present the influence of molybdenum (Mo) content on the magnetic properties and thermal treatment in order to obtain a strong variation of the switching field to temperature. We show that stress annealing of a FeMo9BCu microwire at 775 K under an applied axial stress of 309 MPa leads to the strongest variation in a temperature range from 300 to 315 K, which is highly desirable for biomedical applications.

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Section: Resultsmentioning

confidence: 69%

Section: Resultsmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

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