Magnetic and Transport Properties of Ternary Indides of type R2CoIn8 (R = Ce, Pr and Dy)

TL;DR

This study synthesizes and characterizes R2CoIn8 compounds (R = Ce, Pr, Dy), revealing heavy fermion behavior, crystalline electric field effects, and complex magnetic transitions including metamagnetism.

Contribution

It provides new insights into the magnetic and transport properties of R2CoIn8 compounds, highlighting their structural stability and magnetic phase transitions.

Findings

Ce2CoIn8 exhibits heavy fermion behavior.

Pr2CoIn8 shows crystalline electric field effects.

Dy2CoIn8 undergoes magnetic transitions at 17 K and 5 K, with metamagnetic transitions at 3.6 T and 8.3 T.

Abstract

We have synthesized and investigated the magnetic and transport properties of a series of compounds, R2CoIn8 (R = rare earth). Compounds form in single phase with a tetragonal structure (space group P4/mmm, no. 162). The Ce compound shows heavy fermion behavior. The magnetic susceptibility of Pr2CoIn8 shows a marked deviation from the Curie-Weiss behavior at low temperatures, which is attributed to the crystalline electric field effects. Heat capacity and magnetization measurements show that Dy2CoIn8 undergoes a magnetic transition at 17 K and a second transition near 5 K, the latter of which may be due to spin reorientation. Magnetization of this compound shows two metamagnetic transitions approximately at 3.6 T and 8.3 T.