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Thermally stimulated currents in amorphous barium titanate thin films deposited by rf magnetron sputtering

Journal of Applied Physics, ISSN: 0021-8979, Vol: 100, Issue: 5
2006
  • 30
    Citations
  • 0
    Usage
  • 13
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    30
    • Citation Indexes
      30
  • Captures
    13

Article Description

Thermally stimulated currents (TSCs) are measured in amorphous barium titanate thin films deposited by the rf sputtering technique. The TSC global curve is composed of three overlapping peaks in the 0-200 °C temperature range. At 50 °C, a first TSC peak is observed that can be related to a shallow-trap level. A second peak due to a dipolar polarization process is observed at 95 °C. Finally, a third peak appears at 140 °C that is ascribed to the oxygen vacancy motion and their accumulation at electrodes. The different peaks constituting the global TSC spectrum are separately studied by the fractional polarization technique in order to analyze their fine structures and to determine their activation energies. © 2006 American Institute of Physics.

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