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.
- Amorphous systems
- Critical phenomena
- Electron paramagnetic resonance
- Electron states
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics