# Investigation of the complex magnetism in the breathing pyrochlore LiIn(Cr$_{1-x}$Rh$_x$)$_4$O$_8$

## TL;DR

This study explores how Rh substitution affects the magnetic properties of the breathing pyrochlore LiInCr4O8, revealing increased frustration and a suppressed antiferromagnetic phase, advancing understanding of complex magnetism in frustrated systems.

## Contribution

It provides detailed experimental insights into how Rh doping influences magnetism and frustration in the breathing pyrochlore LiInCr4O8, a novel approach to studying frustrated magnetism.

## Key findings

- Antiferromagnetic phase is suppressed with Rh doping.
- Increased magnetic frustration observed with substitution.
- Engineered breathing pyrochlores help understand complex magnetism.

## Abstract

We have performed a detailed investigation of the new `breathing' pyrochlore compound LiInCr$_4$O$_8$ through Rh substitution with measurements of magnetic susceptibility, specific heat, and x-ray powder diffraction. The antiferromagnetic phase of LiInCr$_4$O$_8$ is found to be slowly suppressed with increasing Rh, up to the critical concentration of $x$ = 0.1 where the antiferromagnetic phase is still observed with the peak in specific heat $T_p$ = 12.5 K, slightly lower than $T_p$ = 14.3 K for the $x$ = 0 compound. From the measurements of magnetization we also uncover evidence that substitution increases the amount of frustration. Comparisons are made with the LiGa$_y$In$_{1-y}$Cr$_4$O$_8$ system as well as other frustrated pyrochlore-related materials and find comparable amounts of frustration. The results of this work shows that engineered breathing pyrochlores presents an important method to further understand the complex magnetism in frustrated systems.