Table 7 Calculated values of density, molar volume, packing density, and free volume of all investigated samples.

From: Sol–gel synthesized calcium borate glass and glass–ceramics: effect of CrCl3 doping on structure, mechanics, and gamma-ray shielding efficiency

Physical parameters

Sample code

0CrCaB

1CrCaB

2CrCaB

3CrCaB

Density (ds)gcm− 3±0.0002

2.57

2.77

2.91

3.11

Molar volume (Vm) cm3mol1±0.0001

24.19

22.74

21.93

20.85

Packing density (Vt)

0.60

0.64

0.66

0.70

Free volume (Vf) cm3/mol

9.68

8.22

7.41

6.32