Magetic softening of Young's modulus of amorphous Fe90Zr10

TL;DR

This study investigates the magnetic softening of Young's modulus in amorphous Fe90Zr10 alloy near its Curie temperature, revealing a correlation between magnetic susceptibility and mechanical properties.

Contribution

It provides the first detailed measurement of Young's modulus and internal friction near the Curie temperature in amorphous Fe90Zr10, highlighting magnetic effects on mechanical behavior.

Findings

Young's modulus softens around 227K

Internal friction increases drastically at T_c

Inverse proportionality between modulus and magnetic susceptibility

Abstract

The Young's modulus and the internal friction of amorphous Fe$_{90}$Zr$_{10}$ alloy were measured near the Curie temperature using the vibrating reed technique. The modulus shows softening around $T_c\approx 227K$ and the internal friction undergoes drastic increase at $T_c$. It is found that both the Young's modulus and the reciprocal of internal friction are inversely proportional to the magnetic susceptibility in the paramagnetic phase.