Glass composition (mole%)

Activation energies of the samples annealed at 150˚C W (eV)

Activation energies of the samples annealed at 225˚C W (eV)

V₂O₅

PbO

GeO₂

Temperature range (K)

Temperature range (K)

300 - 350

350 - 500

300 - 350

350 - 420

50

50

-

0.175

0.175

0.143

0.143

50

45

5

0.398

0.087

0.133

0.395

50

40

10

0.361

0.094

0.101

0.396

50

35

15

0.095

0.095

0.176

0.425