Large stress-resistance effect at high frequencies in Co_68.5Fe_4.5Si₁₂B₁₅ amorphous ribbon

¹ Department of Physics, Shandong University, Jinan 250100, PR China
² School of Electric Engineering & School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, PR China
³ National Amorphous and Nanocrystalline Alloy Engineering Research Center, Central Iron and Steel Research Institute, Beijing 100081, PR China
⁴ Institute of Physics, Chinese Academy of Sciences, Beijing 100080, PR China

Corresponding author: jfhu@sdu.edu.cn

Received: 28 May 2001
Revised: 1 October 2001
Accepted: 20 November 2001
Published online: 15 March 2002

Abstract

In the present work, the stress-impedance and the stress-resistance for Co_68.5Fe_4.5Si₁₂B₁₅ amorphous ribbon are reported. The stress-impedance decreases with increasing tensile stress. In contrast, the large stress-resistance appears at high frequency. The value of with F = 20g can reach 31.4% at 5 MHz. The mechanism of the stress-impedance effect is also discussed.