1：Experimental Design and Method Selection:

The study employed slow evaporation technique for crystal growth, followed by various characterization methods including X-ray diffraction, SEM, EDX, FTIR, Raman spectroscopy, TGA/DTA, UV-Vis spectroscopy, and Z-scan experiments to analyze structural, morphological, elemental, vibrational, thermal, linear optical, and nonlinear optical properties. Theoretical models like Tauc's relation were used for optical band gap determination.

2：Sample Selection and Data Sources:

Single crystals of SCTuT were grown from a solution of thiourea, L-tartaric acid, and samarium chloride in distilled water. Samples were prepared as powders or single crystals for different analyses.

3：List of Experimental Equipment and Materials:

Chemicals included thiourea (S D Fine-Chem Limited, 99% purity), L-tartaric acid (S D Fine-Chem Limited, 99% purity), samarium chloride (Indian Rare Earth Limited, 99% purity), distilled water, Whatman filter paper. Equipment included magnetic stirrer, Oxford X-ray diffractometer, Rigaku Ultima IV diffractometer, TESCAN Vega III SEM, EDX (Brucker), Shimadzu IR Prestige spectrophotometer, Renishaw Raman spectrophotometer, Shimadzu TGA/DTA analyzer, Shimadzu UV3600 spectrophotometer, Ti:sapphire laser for Z-scan, and related accessories like lenses and photodiodes.

4：Experimental Procedures and Operational Workflow:

Crystals were grown by slow evaporation, filtered, and characterized step-by-step: structural analysis with X-ray diffraction, morphological with SEM, elemental with EDX, vibrational with FTIR and Raman, thermal with TGA/DTA, linear optical with UV-Vis, and nonlinear optical with Z-scan experiments. Specific procedures involved sample preparation, data collection at controlled conditions (e.g., temperature ranges, laser parameters), and data analysis.

5：Data Analysis Methods:

Data were analyzed using software like Powder-X for XRD, theoretical fitting for Z-scan (equations for nonlinear coefficients), Tauc's plot for band gap, and standard formulas for optical constants (e.g., extinction coefficient, refractive index). Statistical methods included linear fitting for parameter extraction.