Magnetic phases of erbium orthochromite
Brajesh Tiwari, M Krishna Surendra, M. S. Ramachandra Rao
TL;DR
This paper investigates the magnetic phases of Erbium orthochromite (ErCrO3), revealing its antiferromagnetic ground state below 10 K, and the development of weak ferromagnetism under external magnetic fields, with phase transitions of first order.
Contribution
It provides detailed analysis of magnetic phase transitions and their characteristics in ErCrO3, including thermal hysteresis and Arrott-plot analysis, which are novel insights for this material.
Findings
ErCrO3 has an antiferromagnetic ground state below 10 K.
External magnetic fields induce weak ferromagnetism in ErCrO3.
Magnetic phase transitions are of first order, evidenced by thermal hysteresis and Arrott-plots.
Abstract
Erbium orthochromite, ErCrO3, is a distorted-perovskite which has antiferromagnetic ground state below 10 K while Cr3+ magnetic moments order at 133 K. The temperature dependence of magnetization is studied across different magnetic phases for ErCrO3 and different magnetization isotherms are analyzed. In the presence of external magnetic field, polycrystalline ErCrO3 develops weak ferromagnetism from antiferromagnetic ground state. These magnetic phase transitions are observed to be of first order which is justified by thermal hysteresis and Arrott-plots.
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