Thermal cycling effects on static and dynamic properties of a phase separated manganite

SACANELL, J.; SIEVERS, B.; QUINTERO, M.; GRANJA, L.; GHIVELDER, L.; PARISI, F.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

ELSEVIER SCIENCE BV

Año: 2018

0304-8853

Inthis work we address the interplay between two phenomena which are signaturesof the out-of-equilibrium state in phase separated manganites: irreversibilityagainst thermal cycling and aging/rejuvenation process. The sample investigatedis La0.5Ca0.5MnO3, a prototypical manganiteexhibiting phase separation. Two regimes for isothermal relaxation wereobserved according to the temperature range: for T > 100 K,aging/rejuvenation effects are observed, while for T < 100 K an irreversibleaging was found. Our results show that thermal cycles act as a tool to unveilthe dynamical behavior of the phase separated state in manganites, revealingthe close interplay between static and dynamic properties of phase separatedmanganites.