1：Experimental Design and Method Selection:

The study uses standard melting method to prepare glasses, with thermal, structural, and optical analyses including DTA, UV-Vis-NIR spectroscopy, IR and Raman spectroscopies, XRD, and luminescence measurements to investigate properties and crystallization behavior.

2：Sample Selection and Data Sources:

Glasses with compositions (95-x)(

3：50P2O5-40SrO-10Na2O) – 5Yb2O3 – x(5Y2O3-5Al2O3) for x=0, 25, 5, 1 mol% were prepared using raw materials like NaPO3, Yb2O3, Y2O3, Al2O3, and Sr(PO3)List of Experimental Equipment and Materials:

Equipment includes scanning electron microscope (Carl Zeiss Crossbeam 540), EDS detector (Oxford Instruments X-MaxN 80), DTA instrument (Netszch JUPITER F1), UV-Vis-NIR spectrophotometer (Shimadzu UV-360 Plus), FTIR spectrometer (Perkin Elmer Spectrum one), Raman microscope (Thermo Scientific DXR 2xi), XRD analyzer, spectrometer (Jobin Yvon iHR320), detectors (Hamamatsu P4631-02, R928P), laser diode (BMU8-915-01-R), oscilloscope (Tektronix TDS350), and detector with filter (Thorlabs PDA10CS with FB980-10). Materials include platinum crucible, ethanol for density measurement, and carbon coating for SEM.

4：0). Materials include platinum crucible, ethanol for density measurement, and carbon coating for SEM. Experimental Procedures and Operational Workflow:

4. Experimental Procedures and Operational Workflow: Batches were melted in platinum crucible at 1300-1525°C for 30min, quenched, and annealed at 400°C for 6h. Density measured by Archimedes' method. DTA performed at 10°C/min. Absorption, IR, Raman, XRD, emission spectra, and lifetime measurements conducted with specified excitations and conditions. Heat treatment at Tg+20°C for 17h and Tp-40°C for up to 3h to induce crystallization.

5：6h. Density measured by Archimedes' method. DTA performed at 10°C/min. Absorption, IR, Raman, XRD, emission spectra, and lifetime measurements conducted with specified excitations and conditions. Heat treatment at Tg+20°C for 17h and Tp-40°C for up to 3h to induce crystallization. Data Analysis Methods:

5. Data Analysis Methods: Absorption cross-section calculated using equation σabs(λ) = 2.303/NL log(I0/I). Radiative lifetime calculated using τ_rad = 3λ^4 / (32πc n^2 ∫ σ_abs(λ)dλ). XRD patterns compared to ICDD standards. Emission and lifetime data analyzed for changes due to composition and heat treatment.