DocumentCode :
3486983
Title :
Ionic injected current transients in strontium titanate single-crystals
Author :
Zubko, P. ; Scott, J.F. ; Saad, M.M. ; Baxter, P. ; Bowman, R.M. ; Gregg, J.M.
Author_Institution :
Dept. of Earth Sci., Cambridge Univ., UK
fYear :
2005
fDate :
11-14 Sept. 2005
Firstpage :
136
Lastpage :
138
Abstract :
Current transients J(E,t,T) at high fields (E > 1 MV/cm) have been measured in SrTiO3 crystals. The results are complex, with more than one transient peak time tp. tp varies from ca. 100 ms to 100 s as a function of temperature T and voltage V. One peak displays the dependence tp=const. x (1/V) expected for the Many-Mark-Helfish cusp and may be due to space-charge-limited ionic conduction. The second peak is nearly voltage-independent and may arise from the Cox-Tredgold mechanism in which irreversible electrolytic reactions occur at the anode that facilitate hole injection. Both processes depend strongly upon the sample history.
Keywords :
anodes; charge injection; electrolytes; ionic conductivity; space-charge-limited conduction; strontium compounds; transients; Cox-Tredgold mechanism; Many-Mark-Helfish cusp; SrTiO3; SrTiO3 crystals; anode; high fields; hole injection; ionic injected current transient peak time; irreversible electrolytic reaction; space-charge-limited ionic conduction; temperature function; voltage function; Anodes; Dielectric losses; Electrodes; Geoscience; Physics; Schottky barriers; Space charge; Strontium; Titanium compounds; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrets, 2005. ISE-12. 2005 12th International Symposium on
Print_ISBN :
0-7803-9116-0
Type :
conf
DOI :
10.1109/ISE.2005.1612337
Filename :
1612337
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=3486983
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