Glassy behavior of La0.8Ca0.2MnO3 nanoparticles

V. Markovich, G. Jung, A. Wisniewski, R. Puzniak, I. Fita, Y. Yuzhelevski, D. Mogilyansky, L. Titelman, G. Gorodetsky

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Magnetic and transport properties of La0.8Ca 0.2MnO3 nanoparticles with average size of 18 nm and Curie temperature TC ≈ 231 K have been studied. Pronounced irreversibility of magnetization below Tirr ≈ 208 K has been observed. Studied particles have shown memory effects in zero-field-cooled and field-cooled magnetization. The resistivity has a semiconducting character at 150 < T < 300 K and exhibits relaxation and memory effects below the Curie temperature. The results suggest that superspin-glass features in ensembles of interacting 18 nm La0.8Ca0.2MnO3 particles appear along with superferromagnetic-like features.

Original languageEnglish
Pages (from-to)861-865
Number of pages5
JournalJournal of Superconductivity and Novel Magnetism
Volume24
Issue number1-2
DOIs
StatePublished - 1 Jan 2011

Keywords

  • Manganites
  • Nanoparticles
  • Size effect
  • Spin-glass

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