Magnetoresistive memory in phase separated La$_{0.5}$Ca$_{0.5}$MnO$_{3}$

TL;DR

This study investigates the non-volatile magnetoresistive memory effect in La$_{0.5}$Ca$_{0.5}$MnO$_{3}$, focusing on how different magnetic field application procedures influence its phase separation-based memory capabilities.

Contribution

It compares memory effects under zero field cooling and field cooling procedures, providing insights into phase separation dynamics in the compound.

Findings

Memory response depends on temperature regimes below 220 K.

Different magnetic field application methods yield distinct memory behaviors.

Results support phase separation as key to the memory effect.

Abstract

We have studied a non volatile memory effect in the mixed valent compound La$_{0.5}$Ca$_{0.5}$MnO$_{3}$ induced by magnetic field (H). In a previous work [R.S. Freitas et al., Phys. Rev. B 65 (2002) 104403], it has been shown that the response of this system upon application of H strongly depends on the temperature range, related to three well differentiated regimes of phase separation occurring below 220 K. In this work we compare memory capabilities of the compound, determined following two different experimental procedures for applying H, namely zero field cooling and field cooling the sample. These results are analyzed and discussed within the scenario of phase separation.