Czochralski method and the Micro-Pulling Down (µ-PD) technique . The Czochralski process, widely used for crystal growth, involves pulling a seed crystal from a melt to produce large, defect-free single crystals in a controlled manner. On the other hand, the µ-PD technique offers a faster alternative, producing smaller crystals in less time. It is particularly useful for quickly testing different dopant configurations, thereby optimising GAGG's performance for various applications. Although less commonly used than the Czochralski method due to its complexity, the Optical Floating Zone (OFZ) process is an effective technique for producing high-quality GAGG crystals, making it particularly valuable for precision-demanding applications such as laser host materials, phosphors, scintillators and other luminescent systems .