Abstract
Ribbon-shaped 70% Co-Fe and 12-14% A1-2% Co-Fe alloys were formed by a rapid quenching method with a single roller. The Matteucci effect was measured on the ribbon after annealing in a dry hydrogen atmosphere. The ribbon were very flexible. A sharp voltage pulse was induced between both ends of the ribbon when placed in an ac field due to the Matteucci effect. The voltage was sufficiently high and increased with an increase in frequency and/or field strength. The temperature dependence of the pulse voltage was measured in the temperature range from 50 to 200°C. Furthermore, experimental results are shown for an a.c. current sensor as an application of these ribbons.
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