Paths towards stability in PS anganites: Aging/Rejuvenation and thermal training effects

J. SACANELL; BERNARDO SIEVERS; M. QUINTERO; L. GHIVELDER; F. PARISI

Simposio; XXIII Latin American Symposium on Solid State Physics (SLAFES); 2018

In this work we address the interplay between two phenomena which are signatures of the out-of-equilibriumstate in phase separated (PS) manganites: irreversibility against thermal cycling and aging/rejuvenation process.The sample investigated is La0;5Ca0;5MnO3, a prototypical manganite exhibiting phase separation. Two regimesfor isothermal relaxation were observed according to the temperature range: for T >100 K, aging/rejuvenationeects are observed, while for T <100 K an irreversible aging was found. Our results show that thermal cycles actas a tool to unveil the dynamical behavior of the PS state in manganites, reveling the close interplay betweenstatic and dynamic properties of phase separated manganites.