Magnetic phase diagram of magnetocaloric TmFeO$_3$

TL;DR

This study maps the magnetic phase diagram of TmFeO3 using neutron diffraction, revealing how external magnetic fields influence spin-reorientation transitions and induce new magnetic phases.

Contribution

It provides detailed experimental insights into the magnetic phase behavior of TmFeO3 under various magnetic field orientations and strengths.

Findings

Field along c-axis raises T_SR

Field along b-axis lowers T_SR and creates new phases

Magnetic phases characterized by neutron diffraction

Abstract

Neutron diffraction experiments of TmFeO$_3$ single crystals were performed in the external magnetic fields. The field along $c$-axis increases temperature of spin-reorientation transition $T_{SR}$ from phase ${\Gamma}4$ to ${\Gamma}2$. Application of the field along $b$-axis led to the decrease of $T_{SR}$ and to the formation of new phases. Based on the temperature and field dependence of the Bragg reflection intensity, the configuration of magnetically induced phases was proposed.