A promising high-density scintillator of GdTaO4 single crystal

Rare-Earth Tantalates and Niobates Single Crystals: Promising Scintillators and Laser Materials

“…However, there are cracks, inclusions, and twins within these two crystals. After a long period of technological optimization, finally, a crack-free GdTaO 4 crystal with dimensions of Φ 23 mm × 30 mm was grown successfully, which is the largest size so far [16].…”

“…Under the excitation of 273 nm, the GdTaO 4 crystal shows a strong emission band from 400 to 700 nm, with a highly asymmetrical shape [16]. To analyze the asymmetrical emission band further, a series of temperature-dependent luminescent spectra of GdTaO 4 crystal are measured.…”

“…It is urgent to develop the growth technology of large RETaO4 crystals for the device application. Recently, our group has made great progress in the Cz growth of large-size tantalite crystals and obtained big and fine GdTaO4 single crystals, which would promote the growth and practical application of RETaO4 [16].…”

Growth, structure, chemical etching, and spectroscopic properties of a 2.9μm Tm,Ho:GdYTaO4 laser crystal

“…The growth, structure, spectroscopic, and laser properties of GdTaO 4 (GTO) host material and rare-earth (Tb, Nd, Yb, Er) doped GTO have been studied by our group [17][18][19][20][21]. These crystals can be expected to realize high laser efficiency due to their low symmetry and strong crystal field.…”

High‐Temperature Phase Relations in the Lu2O3–Ta2O5 System

“…Rare‐earth tantalates are high‐density phosphor, whose rare earth and Ta ions have large atomic numbers and lead to a high‐stopping power to the high‐energy particles and rays. A high‐quality GdTaO 4 single crystal with density 8.94 g/cm 3 as a promising scintillator has been grown by the Czochralski method, which has the highest density among the current inorganic single‐crystal scintillators, and its scintillation decay consists of a fast component of 72.6 ns and a slow component of 1236.2 ns . Nd:GdTaO 4 single crystal with density 8.83 g/cm 3 has also been grown by the Czochralski method, its photoluminescence decay time of 417 nm from the 4 f –4 f transition of Nd 3+ is 463 ns, and scintillation decay constants consist of 46.4 ns (48%) and 1199.7 ns (52%) under the light excitation of 354 nm.…”