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Physics Research International
/
2013
/
Article
/
Tab 1
/
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)
2
θ
(degrees)
Stress factor (
ε
)
200
42
34.07
0.163
400
49
32.28
0.146
600
55
32.13
0.059