Meyer-Neldel rule in the conductivity of phase separated manganites

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Meyer-Neldel behaviour of the conductivity of phase separated La1-xCaxMnO3 manganite system in the low Ca-doping range has been investigated. Evolution of the isokinetic temperature of the conductivity, modified by Ca-doping, hydrostatic pressure and current bias has been determined. In addition, the evolution of the isokinetic temperature with ageing has also been studied. It is found that the Meyer-Neldel behaviour of the manganite system stems from multi-excitation entropy mechanism. The isokinetic temperatures estimated from pressure and doping effects coincide but differ from those determined using current and ageing controlled conductivity changes. It is concluded that in the presence of a detailed theoretical model of the excitations coupling in manganites, the investigations of the Meyer-Neldel effect may became a powerful tool for characterization and investigation of transport mechanisms in phase separated manganites.

Original languageEnglish
Pages (from-to)65-70
Number of pages6
JournalJournal of Electrical Engineering
Issue number7
StatePublished - 1 Dec 2019


  • Meyer-Neldel rule
  • activation energy
  • manganites
  • metastable resistivity

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


Dive into the research topics of 'Meyer-Neldel rule in the conductivity of phase separated manganites'. Together they form a unique fingerprint.

Cite this