Magnetic Properties of Fe75Cu4Ni4Mo2B15 Alloy

TL;DR

This study investigates how ball-milling affects the structural and magnetic properties of Fe75Cu4Ni4Mo2B15 alloy, revealing changes in particle size, lattice parameters, magnetization, and magnetoimpedance.

Contribution

It provides new insights into the effects of ball-milling duration on the magnetic and structural characteristics of this specific alloy.

Findings

Particle size decreases rapidly up to 165 hours of milling.

Saturation magnetization decreases with milling time.

Magnetoimpedance is ~2.5% in pellets at 5Hz and ~1.5% in thin films at 3 MHz.

Abstract

The structural and magnetic properties of ball-milled Fe75Cu4Ni4Mo2B15 alloy have been investigated through powder X-ray diffraction studies, magnetization and magnetoimpedance measurements. The particle size decreased rapidly with ball-milling up to 165 hours and then remained as a constant with further hours of milling while, the lattice expanded with milling time up to 165 hours and contracted back with further milling. Saturation magnetization is found to decrease rapidly up to 165 hours of milling and then started decreasing slowly with further milling time. Magnetoimpedance studies were carried out in pellets and thin films of Fe75Cu4Ni4Mo2B15. Magnetoimpedance in pellet is observed to be ~2.5% at 5Hz whereas, in thin films, it is observed to be ~1.5% at 3 MHz.