Properties of amorphous FeCoB alloy particles (abstract)

S. W. Charles, S. Wells, A. Meagher, Steen Mørup, J. Van Wonterghem

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Abstract

Amorphous and crystalline alloy particles (0.05–0.5 nm) of FexCoyBz in which the ratio x:y ranges from 0 to 1 have been prepared by the borohydride reduction of iron and cobalt salts in aqueous solution. The structure of the particles has been studied using Mössbauer spectroscopy and x-ray diffraction. Magnetic measurements of the saturation magnetization, coercivity, and remanence of the particles have been measured. The transition from the amorphous-to-crystalline state has been studied using differential scanning calorimetry (DSC) and thermomagnetometry up to a temperature of 450 °C (see Fig. 1). It has been shown that the fraction of boron in the alloys (10–35 at. %) is dependent upon the rate of addition of salts to borohydride and the concentration of cobalt present; this in turn influences the crystallinity and magnetic properties . Journal of Applied Physics is copyrighted by The American Institute of Physics.
Original languageEnglish
Title of host publicationJournal of Applied Physics
Number of pages5508
Volume64/10
PublisherAmerican Institute of Physics
Publication date1988
DOIs
Publication statusPublished - 1988

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Copyright (1988) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

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