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Pressure-Stimulated Synthesis and Luminescence Properties of Microcrystalline (Lu,Y)3Al5O12:Ce3+ Garnet Phosphors

“…The garnet structure is thermally and chemically stable, and it can accommodate high doping levels for rare-earth elements by substitution at the A positions. Due to a unique combination of physical and chemical properties, garnet crystals are classified among the best host materials for rare-earth dopants. ,− However, as it was shown for several A 2 O 3 –B 2 O 3 systems, the garnet phases typically form at high temperatures. − For this reason, the efficient garnet crystal growth by Czochralski method is possible from iridium crucibles and in a special atmosphere; platinum can be applied only on the flux used to decrease the crystallization temperature. − …”

An Orange-Light Emitting Garnet Phosphor: Tb3Ga5O12:Eu3+

“…9 Unconventional studies have also been performed using TGG, e.g., the so-called phonon Hall effect, 10,11 and the magneto-elastic effect, 12,13 the acoustic Faraday effect, 14,15 and the magnet-thermal conductivity effect. 16 TGG has a high melting temperature with incongruently melting at ∼1910 • C. 17 It is known that the growth of gallium garnets is usually hindered by the morphological instability of crystallization caused by an evaporation of gallium oxide, the discrepancy between the distribution coefficients of the elements forming the garnet crystal, and their appreciable deviation from unity. 17 Thus, the synthesis process becomes to be eventually costly.…”

“…16 TGG has a high melting temperature with incongruently melting at ∼1910 • C. 17 It is known that the growth of gallium garnets is usually hindered by the morphological instability of crystallization caused by an evaporation of gallium oxide, the discrepancy between the distribution coefficients of the elements forming the garnet crystal, and their appreciable deviation from unity. 17 Thus, the synthesis process becomes to be eventually costly. There have been reported various synthesis methods for TGG crystals in different forms, such as bulk ingots, fibers, powders, and ceramics.…”

“…There have been reported various synthesis methods for TGG crystals in different forms, such as bulk ingots, fibers, powders, and ceramics. They are: flux growth, 1 Czochralski method, [17][18][19][20][21] micro-pulling-down method, 22 floating-zone method, 23 metal-organic decomposition (MOD) method, 24,25 and solid-state reaction (SSR) method. 26 Among them, the Czochralski method has been popularly used.…”