Spontaneous magnetization and magnetic susceptibility of LaVO3

TL;DR

This study investigates the magnetic properties of LaVO3, identifying key temperatures where magnetic behavior changes, including spontaneous magnetization onset and susceptibility drops, revealing complex magnetic phase transitions.

Contribution

The paper provides detailed measurements of magnetization and susceptibility in LaVO3, identifying multiple characteristic temperatures and their relation to magnetic phase transitions.

Findings

Spontaneous magnetization appears below 148 K.

Magnetic susceptibility drops below 142 K.

Multiple characteristic temperatures indicate complex magnetic behavior.

Abstract

Five characteristic temperatures of TM = 148 K, TN = 142 K, Tt = 138 K, Tf ~ 125 K and Tg ~ 50 K were found by the measurements of the magnetization curves at various temperature. The spontaneous magnetization appears below TM. It increases up to M_{S} simeq 2 times 10^{-4} mu_{B} at Tt and then decreases steeply below Tt, which qualitatively agrees with the temperature dependence of magnetization obtained under field-cooling (FC) condition. On the other hand, the slope of the magnetization curve, namely the magnetic susceptibility, drops below TN, which coincides with the temperature dependence of magnetization obtained under zero-FC condition, although the magnetization curves were obtained under FC condition. The temperature dependence of the spontaneous magnetization shows a minimum at Tf and a drop at Tg although there is no anomaly in the temperature dependence of FC or ZFC magnetization.