Open AccessElectric-pulse-induced resistance switching effect in the bulk of La0.5Ca0.5MnO3 ceramics
Author(s) -
Ming-Ru Wu,
Cihui Yang,
Dawei Shi,
R. L. Wang,
Lingfang Xu,
Haibo Xiao,
K. Baerner
Publication year - 2014
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4872216
Subject(s) - ohmic contact , materials science , perovskite (structure) , ceramic , electrical resistivity and conductivity , electrode , schottky barrier , doping , condensed matter physics , nanotechnology , chemistry , composite material , optoelectronics , crystallography , electrical engineering , physics , engineering , layer (electronics) , diode
In the majority of contributions, the electrical–pulse-induced resistance (EPIR) switching effect of perovskite manganites is thought to originate from the extrinsic interfacial Schottky barrier between the metal electrode and the surface of sample. In this work, La0.5Ca0.5MnO3 (LCMO) ceramic samples were synthesized by solid state reaction and the transport properties, especially, the EPIR effect and memristor behavior were investigated under 4-wire method using silver-glue as electrodes. Although the I-V characteristic of LCMO shows an ohmic linearity under the 4-wire mode at room temperature, a stable and remarkable EPIR can still be observed when the pulse voltage is more than a critical value. This bulk EPIR effect is novel for rare - earth doped manganites