Observation of Dual Spin Reorientation Transitions in Polycrystalline CeCr$_x$Fe$_{1-x}$O$_3$(x=0.33 and 0.67)

TL;DR

This study reports the discovery of two spin reorientation transitions in CeCr$_x$Fe$_{1-x}$O$_3$ compounds with x=0.33 and 0.67, revealing complex magnetic behavior relevant for spintronic applications.

Contribution

It is the first to observe dual spin reorientation transitions in CeCr$_x$Fe$_{1-x}$O$_3$ due to Cr doping, expanding understanding of magnetic phase transitions in rare earth orthoferrites.

Findings

Two spin reorientation transitions observed at 230 K and 100 K.

Identification of two Néel transitions in the material.

Complex magnetic behavior with potential for spintronic devices.

Abstract

We investigate the magnetic behavior of polycrystalline CeCr$_x$Fe$_{1-x}$O$_3$ (x = 0, 0.33, 0.67, and 1) synthesized via solid state reaction. Rare earth orthoferrite and orthochromite materials are well known for exhibiting spin reorientation transitions. Cr$^{3+}$ doping in CeFeO$_3$ results in the unusual occurrence of two spin reorientation transitions, ${\Gamma}_4$(G$_x$, A$_y$, F$_z$) $\rightarrow$ ${\Gamma}_1$(A$_x$, G$_y$, C$_z$) near 230 K and ${\Gamma}_4$(G$_x$, A$_y$, F$_z$) $\rightarrow$ ${\Gamma}_2$(F$_x$, C$_y$, G$_z$) near 100 K. In addition, two N\'eel transitions are identified. The results indicate that CeCr$_x$Fe$_{1-x}$O$_3$ offers a rich collection of magnetic behaviors with application potential for spintronic devices.