High-field conduction in barium titanate

F D Morrison, P Zubko, D J Jung, J F Scott, P Baxter, M M Saad, R M Bowman, J M Gregg

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52 Citations (Scopus)

Abstract

We present current-voltage studies of very thin (∼ 77 nm) barium titanate single crystals up to 1.3 GV/m applied field. These show that the mechanism of leakage current at high fields is that of space charge limited conduction (SCLC) in a regime with a continuous distribution of traps, according to the original model of Rose [Phys. Rev. 97, 1538 (1955)]. This study represents a factor of x5 in field compared with the early studies of BaTiO3 conduction [A. Branwood et al., Proc. Phys. Soc. London 79, 1161 (1962)]. Comparison is also given with ceramic multilayer barium titanate capacitors, and with variable range hopping [B. I. Shklovskii, Sov. Phys. Semicond. 6, 1964 (1973)], reported in SrTiO3 films [D. Fuchs, M. Adam, and R. Schneider, J. Phys. IV France 11, 71 (2001)]. (C) 2005 American Institute of Physics.

Original languageEnglish
Article number152903
Pages (from-to)-
Number of pages3
JournalApplied Physics Letters
Volume86
Issue number15
DOIs
Publication statusPublished - 11 Apr 2005

Keywords

  • SINGLE CRYSTALS
  • THIN-FILMS
  • RESISTIVITY
  • CAPACITORS
  • SOLIDS

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