Investigation of the field-treated magnetic state in Gd5Ge4

TL;DR

This study investigates the magnetic properties of Gd5Ge4, revealing a field-induced ferromagnetic state at low temperatures that persists after removing the magnetic field, with distinct behaviors observed above and below 25 K.

Contribution

It provides new insights into the nature of the field-treated magnetic state in Gd5Ge4 through detailed magnetization and heat capacity measurements.

Findings

Field-induced ferromagnetic state persists after field removal.

Distinct magnetic behaviors observed above and below 25 K.

Characterization of the transition temperature Tirr = 25 K.

Abstract

At low temperatures, the intermetallic compound Gd$_5$Ge$_4$ shows a sharp field-induced transition into a ferromagnetic state around 25 kOe of applied field. The material remains in the field treated ferromagnetic state even when the magnetic field is removed. We have investigated the character of this field-treated state by magnetization and heat capacity measurements. The nature of the magnetization and the heat capacity are found to be different above and below a charactersitic temperature Tirr = 25 K.