Hydrogen Absorption of LaFe10.9Co0.8Si1.3 Compound under Low Hydrogen Gas Pressure

Abstract

The effects of hydrogen absorption on structure, Curie temperature and phase transition property for the LaFe 10.9 Co 0.8 Si 1.3 compound are investigated by X-ray diffraction (XRD) and differential scanning calorimeter (DSC) in a 1-atm H 2 gas. The original compound and hydride present cubic NaZn 13 -type structure. The Curie temperature of LaFe 10.9 Co 0.8 Si 1.3 shifts from 277K to 346K and temperature range of the phase transition becomes wider significantly after hydrogen absorption.