Research Article

Preparation, Characterization, and Luminescence Properties of Orthorhombic Sodium Sulphate

Table 1

The crystallite size and stress factor for thenadrite calcined at different temperatures.

Calcined temperature (°C)Crystallite size (nm)2θ (degrees)Stress factor (ε)

2004234.070.163
4004932.280.146
6005532.130.059