Proton magnetic resonance study of the phase transitions of [N(CH3)4]2BCl4 (B=59Co, 63Cu, 67Zn, and 113Cd) single crystals Original Research Article

Dy3+: Ca3(BO3)2 crystal was grown successfully by the Czochraski technique. The absorption spectrum was measured and its absorption peaks were assigned. The Judd–Ofelt intensity parameters were found to be Ω2=5.216×10−20, Ω4=1.858×10−20, Ω6=0.623×10−20 cm2. The spectroscopic parameters of this crystal such as the oscillator strengths, radiative transition probabilities, radiative lifetime as well as the branching ratios were calculated. Also, room temperature luminescence decay curve in correspondence with the emission line 4F9/2→6H13/2 centered at 575 nm was measured.