Electrical Switching in Calcium Phosphate Glasses Containing Iron

  • M. H. Omar
  • M. N. Morcos


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.


Threshold Voltage Chalcogenide Glass Borate Glass Memory Switching High Resistance State 


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Copyright information

© Plenum Press, New York 1974

Authors and Affiliations

  • M. H. Omar
    • 1
  • M. N. Morcos
    • 1
  1. 1.Solid State and Materials Research CenterThe American University in CairoEgypt

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