Electrical Switching in Calcium Phosphate Glasses Containing Iron
Electrical switching was studied in a series of calcium phosphate glasses containing iron. The samples were prepared by melting and evaporating of the glasses. The switching phenomena was studied using a.c. and d.c. voltages. The samples showed switching, from a high resistance state (off-state ≥ 10 M Ω) to a low resistance state (onstate ≤ 1 KΩ) at certain threshold voltages. The switching was invariably of the memory type and a high current pulse was required to switch the samples to the off-state. In most cases, no negative resistance was observed. The threshold switching voltage decreased with higher iron content and with decreasing thickness of the samples. The most significant parameter appeared to be the temperature; a marked decrease in threshold voltage was observed with increasing temperature of the sample.
KeywordsThreshold Voltage Chalcogenide Glass Borate Glass Memory Switching High Resistance State
Unable to display preview. Download preview PDF.
- 1.S.R. Ovshinsky, Electronics 12 76 (1959); Control Engineering 6, 121 (1959).Google Scholar
- 2.A. Pearson, W.R. Nothover, J.F. Dewald, W.F. Peck Jr., in Advances in Glass Technology, Plenum, New York (1962) 357.Google Scholar
- 3.B.T. Kolomiets, E.A. Lebedev, Radio Eng. Electron. USSR 8, 1941 (1963).Google Scholar
- 4.C.F. Drake, I.F. Scanlan, A. Engel, Phys. Stat. Sol. (1969) 193.Google Scholar
- 5.M.H. Omar, M. El Hamamsy, A. Bishay, IXth Intern. Congress on Glass, Versailles (1971) pt. 1, 521.Google Scholar
- 6.R.S. Motran, A.M. Bishay, D.J. Johnson, Second Cairo Solid State Conference (1973), this volume.Google Scholar
- 8.N.K. Hindley, J. Non-Cryst. Solids 8–10 557 (1972).Google Scholar
- 9.D.R. Haberland, H. Stiegler, J. Non-Cryst. Solids 8–10 408 (1972).Google Scholar
- 15.T. Kaplan, D. Adler, J. Non-Cryst. Solids 8–10 538 (1972).Google Scholar
- 17.D.L. Thomas, J.C. Male, J. Non-Cryst. Solids 8–10 522 (1972).Google Scholar
- 22.C.H. Sie, M.P. Dugan, S.C. Moss, J. Non-Cryst. Solids 8–10 877 (1972).Google Scholar