Electron magnetic resonance (EMR) study of electron-hole asymmetry in La1-xCaxMnO3 manganites (x=0.2,0.8)

A. I. Shames, E. Rozenberg, M. Auslender, G. Gorodetsky, C. Martin, A. Maignan, Ya M. Mukovskii

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20 Scopus citations


X-band EMR measurements on powdered samples of single-crystalline La 0.8Ca0.2MnO3 and polycrystalline La 0.2Ca0.8MnO3 manganites were carried out at 120≤T≤500 K aiming to study the effect of the electron-hole doping asymmetry in La1-xCaxMnO3 system. In the paramagnetic (PM) state both compounds differ in the nature of short-range magnetic orderings observed - clusters of double-exchange coupled Mn 3+-Mn4+ ions and magneto-impurity-like clusters in the La0.8Ca0.2MnO3 and La0.2Ca 0.8MnO3 compounds, respectively. Ferromagnetic ground state of La0.8Ca0.2MnO3 is characterized by the coexistence of orbitally ordered Mn3+ subsystem and Mn4+ with band-like carriers one, which are responsible for the multiline EMR spectra. Charge-ordered antiferromagnetic ground state of La 0.2Ca0.8MnO3 causes a sharp decrease in intensity and then vanishing of the EMR signal observed in the PM region.

Original languageEnglish
Pages (from-to)910-913
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Volume290-291 PART 2
StatePublished - 1 Apr 2005


  • Electron and hole-doped manganites
  • Ferromagnetic and electron paramagnetic resonance

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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