التفاصيل البيبلوغرافية
| العنوان: |
Ferroelectric properties in thin film barium titanate grown using pulsed laser deposition. |
| المؤلفون: |
Appleby, Daniel J. R., Ponon, Nikhil K., Kwa, Kelvin S. K., Ganti, Srinivas, Hannemann, Ullrich, Petrov, Peter K., Alford, Neil M., O'Neill, Anthony |
| المصدر: |
Journal of Applied Physics; 2014, Vol. 116 Issue 12, p1-6, 6p, 2 Color Photographs, 1 Black and White Photograph, 5 Graphs |
| مصطلحات موضوعية: |
THIN film research, FERROELECTRICITY, BARIUM titanate, PULSED laser deposition, COATING processes |
| مستخلص: |
The characteristics of polycrystalline BaTiO3 metal-insulator-metal capacitors, fabricated using pulsed laser deposition, are investigated from room temperature to 420 K. The capacitance-voltage characteristics show ferroelectric behaviour at room temperature, with a phase transition to paraelectric at higher temperature. However, the permittivity response shows paraelectric behaviour across all measured temperatures. So BaTiO3 exists here in a mixture of cubic and tetragonal phases. The BaTiO3 films have a columnar structure, with grain size increasing with film thickness due to their increasing height but not diameter. This correlates with an increase in remnant polarization. The results support a size driven phase transition in thin films of polycrystalline BaTiO3. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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