Successive phase transitions and phase diagrams of the quasi-two-dimensional triangular antiferromagnet Rb4Mn(MoO4)3

TL;DR

This study investigates the complex magnetic phase transitions of Rb4Mn(MoO4)3, a quasi-2D triangular antiferromagnet, revealing successive phase changes and aligning experimental results with theoretical models.

Contribution

It provides a detailed experimental and theoretical analysis of phase diagrams and magnetic properties in a geometrically frustrated magnet, a rare achievement in the field.

Findings

Identification of successive phase transitions in Rb4Mn(MoO4)3

Quantitative agreement between experimental data and theoretical models

Discovery of an intermediate collinear magnetic phase

Abstract

Comprehensive experimental studies by magnetic, thermal and neutron measurements have clarified that Rb4Mn(MoO4)3 is a model system of a quasi-2D triangular Heisenberg antiferromagnet with an easy-axis anisotropy, exhibiting successive transitions across an intermediate collinear phase. As a rare case for geometrically frustrated magnetism, quantitative agreement between experiment and theory is found for complete, anisotropic phase diagrams as well as magnetic properties.