Ionic Injected Current Transients in Strontium Titanate Single-Crystals

Zubko, P. and Scott, J. F. and Saad, M. M. and Baxter, P. and Bowman, R. M. and Gregg, J. M. (2006) Ionic Injected Current Transients in Strontium Titanate Single-Crystals. In: 12th International Symposium on Electrets. IEEE, pp. 136-138. ISBN 0-7803-9116-0

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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.

Item Type: Book Section
Uncontrolled Keywords: 2006 AREP IA51 2005 P
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
Volume: 12th
Page Range: pp. 136-138
Identification Number: doi : 10.1109/ISE.2005.1612337
Depositing User: Sarah Humbert
Date Deposited: 08 Oct 2011 10:06
Last Modified: 23 Jul 2013 09:58
URI: http://eprints.esc.cam.ac.uk/id/eprint/1566

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