Abstract: The present invention discloses a ?-aminobutyric acid hemihydrate crystal, its molecular formula is C4H9NO2.0.5H2O. It also discloses a method of preparing a ?-aminobutyric acid hemihydrate crystal, including first adding crude ?-aminobutyric acid to water to prepare a ?-aminobutyric acid suspension at an initial concentration of 1.2-2.0 g/mL; then stirring the suspension at a constant temperature of 5-10° C. for 6-12 hours, followed by filtering and drying to obtain the ?-aminobutyric acid hemihydrate crystal. The ?-aminobutyric acid hemihydrate crystal is stable, does not easily absorb moisture and agglomerate, and is convenient for further processing and use. The crystal has a large main particle size, uniform particle size distribution, high bulk density, good flowability, and a purity of ?99%. The preparation method of the crystal according to the present invention is simple, easy to operate, highly efficient and low in energy consumption, and is suitable for large-scale industrial production.

Abstract: The present invention discloses a ?-aminobutyric acid hemihydrate crystal, its molecular formula is C4H9NO2.0.5H2O. It also discloses a method of preparing a ?-aminobutyric acid hemihydrate crystal, including first adding crude ?-aminobutyric acid to water to prepare a ?-aminobutyric acid suspension at an initial concentration of 1.2-2.0 g/mL; then stirring the suspension at a constant temperature of 5-10° C. for 6-12 hours, followed by filtering and drying to obtain the ?-aminobutyric acid hemihydrate crystal. The ?-aminobutyric acid hemihydrate crystal is stable, does not easily absorb moisture and agglomerate, and is convenient for further processing and use. The crystal has a large main particle size, uniform particle size distribution, high bulk density, good flowability, and a purity of ?99%. The preparation method of the crystal according to the present invention is simple, easy to operate, highly efficient and low in energy consumption, and is suitable for large-scale industrial production.

Abstract: A phosphor is described. In an embodiment a phosphor includes the material Ca(Al12-x-y-zMgxGey)O19:(zMn4+), wherein 0<x, y, z<1. Furthermore, a light-emitting device containing the phosphor and a method for producing the phosphor are also described.

Abstract: A scintillator is provided, comprising: a composition of formula (Lu1-x-y-zCexInyM1z)2SiO5, wherein M1 is Y, Sc, Gd, or a combination thereof; 0.00001<x<0.05; 0.000001<y<0.1; and 0<=z<0.999989. A detecting device comprising a crystalline structure of the above scintillator is also provided. A method of detecting energy with the above detecting device is provided, comprising: receiving radiation by the scintillator; and detecting photons with a photon detector coupled to the scintillator.

Abstract: A scintillator is provided, comprising: a composition of formula (Lu1-x-y-zCexInyM1z)2SiO5, wherein M1 is Y, Sc, Gd, or a combination thereof; 0.00001<x<0.05; 0.000001<y<0.1; and 0<=z<0.999989. A detecting device comprising a crystalline structure of the above scintillator is also provided. A method of detecting energy with the above detecting device is provided, comprising: receiving radiation by the scintillator; and detecting photons with a photon detector coupled to the scintillator.