Growth and EPR properties of ErVO₄ single crystals

Abstract

Abstract. Single crystals of ErVO 4 were grown by the Czochralski method under ambient pressure in a nitrogen atmosphere. Obtained crystals were transparent with strong pink coloring. Electron paramagnetic resonance (EPR) spectra were recorded as a function of the applied magnetic fi eld. Temperature and angular dependences of the EPR spectra of the samples in the 3-300 K temperature range were analyzed applying both Lorentzian--Gauss approximation for diluted medium and Dyson for dense magnetic medium. EPR-NMR program was done to fi nd local symmetry and spin Hamiltonian parameters of erbium ions.

Electron Paramagnetic Resonance: A Technique to Locate the Nearest Environment of Chromium Luminescent Centers

“…Luminescent ions are those whose energy levels allow them to emit radiation in the infrared, visible light, and ultraviolet ranges. These ions include rare earth (RE) ions (e.g., Ce 3+ , Nd 3+ , Eu 3+ , Eu 2+ , Dy 3+ , Er 3+ , Yb 3+ ) − and transition metal ions (e.g., Mn 2+/3+/4+ , Cr 3+ , Ni 2+ ). − Due to the high cost of RE ions, transition metal ions are increasingly used. Transition metal ions most often occupy octahedral or tetrahedral sites depending on the valency of these ions.…”