Effect of tensile stress on cobalt-based amorphous wires impedance near the magnetostriction compensation temperature

•Magnetostriction compensation temperature for Co66Fe4Ta2.5Si12.5B15 alloy was found.•Impedance varies greatly near the magnetostriction compensation temperature.•Strong impedance temperature changes may be used in the design of temperature sensors. This study investigates the effect of tensile stress on the impedance of an amorphous Co66Fe4Ta2.5Si12.5B15 wire near the magnetostriction compensation temperature at approximately 170 K. When the wire is exposed to the tensile stress, the wire impedance modulus is found to demonstrate high temperature sensitivity of over 2%/K. This finding can help in designing of temperature sensors.