The effects of Joule heating on the amorphous Fe40Ni40B20 alloy are investigated by measuring the time behavior of the electrical resistance of ribbon strips during such a treatment. The structural transformations occurring in subsequent stages of the process are studied by means of x-ray-diffraction, differential-scanning-calorimetry, and magnetic-permeability measurements. A continuous evolution from a fully amorphous to a fully crystalline structure may be followed. The crystallization mechanisms observed in Joule-heated samples differ from the ones occurring under conventional heating conditions. The electrical resistance displays a bump in the course of Joule heating. A quantitative model relating such a bump to the extra heat released to the sample by fast crystallization is proposed and discussed.
Joule-heating Effects In the Amorphous Fe40ni40b20 Alloy / P. ALLIA;M. BARICCO;P. TIBERTO;F. VINAI. - In: PHYSICAL REVIEW. B, CONDENSED MATTER. - ISSN 0163-1829. - 47(1993), pp. 3118-3125. [10.1103/PhysRevB.47.3118]
Titolo: | Joule-heating Effects In the Amorphous Fe40ni40b20 Alloy | |
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Data di pubblicazione: | 1993 | |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevB.47.3118 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/11583/2498133