本发明公开了一种石榴石结构荧光粉及其制备工艺，该荧光粉的化学通式为：A(3‑x‑y)Ga5O12：xCr3+，yB其中：A为Y、Gd、Lu中的至少一种，B为Zn、Mn中的至少一种，x取0.01～0.10，y取0.005‑0.05。制备该荧光粉采用高温固相法，具体步骤为：按照荧光粉化学式中各元素化学计量比，准确称取相应的原料，充分研磨混合，在马弗炉中烧结，经处理得到相应材料。本发明的荧光粉具有宽泛可选的激发峰值波长(250‑640nm)和发射峰值波长(705‑740nm)，并且兼有制备简单、技术成熟、制备产品高效稳定等优点。根据不同的发射波长需求，该荧光粉在高温传感器和高压校准器方面有潜在的应用。

The invention discloses garnet structure fluorescent powder and a preparation process thereof, wherein the fluorescent powder has a chemical general formula of A(3-x-y)Ga5O12:xCr<3+>,yB, wherein A isat least one selected from Y, Gd and Lu, B is at least one selected from Zn and Mn, x is 0.01-0.10, and y is 0.005-0.05. The preparation method uses a high-temperature solid-phase method, and specifically comprises: accurately weighing corresponding raw materials according to the stoichiometric ratio of each element in the chemical formula of the fluorescent powder, fully grinding and mixing, sintering in a muffle furnace, and treating to obtain the corresponding material. According to the present invention, the prepared fluorescent powder has wide selectable excitation peak wavelengths (250-640 nm) and wide emission peak wavelengths (705-740 nm), the preparation method has advantages of simple preparation, mature technology, efficient and stable product and the like, and based on different emission wavelength requirements, the fluorescent powder has potential applications in the fields of high-temperature sensors and high-voltage calibrators.