The kagome staircase compounds Ni$_{3}$V$_{2}$O$_{8}$ and Co$_{3}$V$_{2}$O$_{8}$ studied with implanted muons

TL;DR

This study uses muon-spin relaxation to investigate the local magnetic fields and structures in kagome staircase compounds Ni3V2O8 and Co3V2O8, providing detailed insights into their magnetic phases and temperature-dependent behavior.

Contribution

It introduces muon-spin relaxation as a method to distinguish local magnetic environments in kagome staircase compounds, confirming and elaborating on their magnetic structures.

Findings

Confirmed magnetic structures of Ni3V2O8 and Co3V2O8 phases

Mapped temperature evolution of local magnetic fields

Identified distinct local field distributions at different ion sites

Abstract

We present the results of muon-spin relaxation ($\mu^{+}$SR) measurements on the kagome staircase compounds Ni$_{3}$V$_{2}$O$_{8}$ and Co$_{3}$V$_{2}$O$_{8}$. The magnetic behavior of these materials may be described in terms of two inequivalent magnetic ion sites, known as spine sites and cross-tie sites. Our $\mu^{+}$SR results allow us to probe each of these sites individually, revealing the distribution of the local magnetic fields near these positions. We are able not only to confirm the magnetic structures of the various phases proposed on the basis of bulk measurements but also to give an insight into the temperature evolution of the local field distribution in each phase.