A transition from antiferromagnetism to spin-glass freezing in single crystalline, Dy2PdSi3

TL;DR

This study investigates the magnetic behavior of Dy2PdSi3, revealing a transition from antiferromagnetic order to spin-glass freezing at low temperatures through susceptibility and magnetization measurements.

Contribution

It provides new experimental evidence of a temperature-induced transition from antiferromagnetism to spin-glass behavior in Dy2PdSi3.

Findings

Confirmation of two magnetic transitions at 8 K and 2.5 K

Identification of the 2.5 K transition as spin-glass-like

Sensitivity of the spin-glass transition to external magnetic fields

Abstract

We report low temperature (1.8-15 K) ac magnetic susceptibility and isothermal remanent magnetization behavior for the single crystalline form of Dy2PdSi3, crystallizing in a AlB2-derived hexagonal structure, for two orientations. The results, while confirming the existence of two magnetic transitions, one at 8 K and the other at 2.5 K, as inferred from previous dc magnetization studies, suggest that the 2.5K-transition is spin-glass-like, with an interesting sensitivity to the application of an external dc magnetic field. Thus, this compound appears to undergo a transition from antiferromagnetism to spin-glass freezing as the temperature is lowered.