Table 1 Composition of base glass and the series of TiO2 modified glass in mol%.

From: TiO2-doped borate glass and glass-ceramic: properties and prospects for biological and electrical applications

Glass code

B2O3

Al2O3

NaF

BaO

TiO2

BG0

40

20

10

30

BG1

40

20

10

29.5

0.5

BG2

40

20

10

29

1

BG3

40

20

10

28.5

1.5

BG4

40

20

10

28

2