Glasses in this system were synthesized and were found to have a high direct-current conductivity which was attributed to mobile F ions. Alternating-current data for temperatures of 25 to 200C were analyzed using impedance spectroscopy. A glass having the composition, PbF2-10Al(PO3)3-5MnF2, yielded a then-record value for conductivity in an anionic conducting glass. The conductivity, of 0.00011S/cm at 200C, was nearly 2 orders of magnitude higher than the best values reported up to that time. Electrical and mechanical relaxation data were compared using an iso-frequency versus inverse temperature representation. The most probable mechanical relaxation time was shorter than the most probable electrical relaxation time.

A.R.Kulkarni, C.A.Angell: Materials Research Bulletin, 1986, 21[9], 1115-21