TY - JOUR
T1 - Dc and ac conductivity in wide composition range Li2OP2O5 glasses
AU - Martin, S. W.
AU - Angell, C. A.
N1 - Funding Information:
We are indebted to the National Science Foundation for partial support of this work under NSF-MRL Grant Nos. DMR 80-202249 and DMR 83-16988, and the SOHIO Research Foundation for a fellowship to one of us (SWM). We also wish to acknowledge NSF collaboration Science Grant No. INT 8412292 and the hospitality of Dr L.M. Torell and the Department of Physics, Chalmers University of Technology, Gothenburg, Sweden, where much of the manuscript was prepared, and Malcolm Ingram for whetting our appetite for high-alkali phosphate glasses with preliminary results hinting at possible conductance maxima.
PY - 1986/6/2
Y1 - 1986/6/2
N2 - The electrical conductivity of lithium phosphate glasses has been studied over wide frequency and temperature ranges, using a fully automated system capable of yielding data of high precision. Due to a "total drybox" sample preparation facility, samples containing P2O5 contents up to 65 mol% have been included without sacrifice of data quality. Comparisons with the behavior of the corresponding silicate, borate and boroaluminate glasses have been made and analyzed in terms of microscopic models. At the other composition extreme, measurements have been extended to 62.5 mol% Li2O without finding a conductivity maximum. The ac conductivity data have been analyzed using the modulus formalism, and systematic trends in the Kohlrausch parameter β with composition have been recorded. β decreases from 0.60 to 0.49 over the composition range 37-62.5 mol% li2O and seems to correlate best with the isothermal conductivity. Attention is drawn to anomalous structuring effects in P2O5-rich glasses.
AB - The electrical conductivity of lithium phosphate glasses has been studied over wide frequency and temperature ranges, using a fully automated system capable of yielding data of high precision. Due to a "total drybox" sample preparation facility, samples containing P2O5 contents up to 65 mol% have been included without sacrifice of data quality. Comparisons with the behavior of the corresponding silicate, borate and boroaluminate glasses have been made and analyzed in terms of microscopic models. At the other composition extreme, measurements have been extended to 62.5 mol% Li2O without finding a conductivity maximum. The ac conductivity data have been analyzed using the modulus formalism, and systematic trends in the Kohlrausch parameter β with composition have been recorded. β decreases from 0.60 to 0.49 over the composition range 37-62.5 mol% li2O and seems to correlate best with the isothermal conductivity. Attention is drawn to anomalous structuring effects in P2O5-rich glasses.
UR - http://www.scopus.com/inward/record.url?scp=0022735901&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0022735901&partnerID=8YFLogxK
U2 - 10.1016/0022-3093(86)90067-0
DO - 10.1016/0022-3093(86)90067-0
M3 - Article
AN - SCOPUS:0022735901
SN - 0022-3093
VL - 83
SP - 185
EP - 207
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
IS - 1-2
ER -