Electron transfer through ordered metallic chains in LiNbO3: (Mg, Zn) : Me(3d)

L. G. Rakitina, B. D. Shanina, G. Corradi, K. Polgar

Research output: Contribution to journalArticle

Abstract

In crystal and ceramic LiNbO3 double doped with Mg or Zn above the threshold concentration (CMg,Zn ≥ 4-6 mol%) and with transition metals of the 3d group (Cr, Fe, Mn) non-resonant microwave absorption (NRMA) dependent on the magnetic field was studied. Peak-like dependencies of the NRMA signal intensity on the concentration of dopants and stoichiometry of lithium niobate were found. The EPR line of mobile electrons (ΔB = 30 mT) with g = 2.0023 was detected. The interaction energy between the substitutional impurities of Mg and Cr was calculated. It was concluded, that in LiNbO3 : (Mg, Zn) : (Cr, Fe, Mn) ordered metallic chains exist with electron conductivity.

Original languageEnglish
Pages (from-to)238-240
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume184
Issue number2
DOIs
Publication statusPublished - Apr 23 1998

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Keywords

  • Amorphous systems
  • Concentration
  • Critical phenomena
  • Electron paramagnetic resonance
  • Electron states
  • Oxides

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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