# Near room temperature antiferromagnetic ordering with a potential low dimensional magnetism in AlMn$_2$B$_2$

## TL;DR

This study reports the synthesis and characterization of AlMn$_2$B$_2$, a layered orthorhombic material exhibiting antiferromagnetic order near room temperature and potential low-dimensional magnetic behavior.

## Contribution

It provides the first detailed analysis of AlMn$_2$B$_2$'s magnetic properties, highlighting its high-temperature antiferromagnetic transition and possible low-dimensional magnetism.

## Key findings

- Antiferromagnetic transition at 313 K
- Layered orthorhombic structure with anisotropic magnetization
- Possible signatures of low-dimensional magnetic interactions

## Abstract

We present self flux growth and characterization of single crystalline AlMn$_2$B$_2$. It is an orthorhombic (space group Cmmm), layered material with a plate like morphology. The anisotropic bulk magnetization data, electrical transport and $^{11}$B nuclear magnetic resonance(NMR) data revealed an antiferromagnetic (AFM) transition at 313 $\pm$ 2 K. In the magnetization data, there is also a broad local maximum significantly above the AFM transition that could be a signature of low dimensional magnetic interactions in AlMn$_2$B$_2$.