Gehringer, Maximilian ; Bolat, Rizabek ; Isaia, Daniel ; Rödel, Jürgen ; Fulanovic, Lovro (2022)
Evaluation of dielectric breakdown of BaTiO3 by novel indentation method.
In: Journal of the European Ceramic Society, 42 (13)
doi: 10.1016/j.jeurceramsoc.2022.06.031
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Succinct evaluation of dielectric breakdown strength of dielectric materials has been hampered by extrinsic parameters like size/thickness dependence, electrode configuration, and defect concentration which all mask the materials’ intrinsic value. A novel indentation method to prepare arch-shaped indents on the surface of BaTiO3 green stacks has been developed to overcome this problem. Utilizing this method enables simple and reliable sample preparation for investigation of dielectric breakdown behavior. Theoretical and experimental investigations reveal vanishing electrode edge effects governed by the improved distribution of electric field due to the arch-shaped indents. Thus, the novel indentation method bears advantages compared to measuring DBS of disk-shaped samples and allows for narrowing influences of extrinsic parameters. By obtaining breakdown channels close to the center of the indent, this technique additionally features the possibility of localizing the breakdown event.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Gehringer, Maximilian ; Bolat, Rizabek ; Isaia, Daniel ; Rödel, Jürgen ; Fulanovic, Lovro |
| Art des Eintrags: | Bibliographie |
| Titel: | Evaluation of dielectric breakdown of BaTiO3 by novel indentation method |
| Sprache: | Englisch |
| Publikationsjahr: | 11 Juli 2022 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the European Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 42 |
| (Heft-)Nummer: | 13 |
| DOI: | 10.1016/j.jeurceramsoc.2022.06.031 |
| Kurzbeschreibung (Abstract): | Succinct evaluation of dielectric breakdown strength of dielectric materials has been hampered by extrinsic parameters like size/thickness dependence, electrode configuration, and defect concentration which all mask the materials’ intrinsic value. A novel indentation method to prepare arch-shaped indents on the surface of BaTiO3 green stacks has been developed to overcome this problem. Utilizing this method enables simple and reliable sample preparation for investigation of dielectric breakdown behavior. Theoretical and experimental investigations reveal vanishing electrode edge effects governed by the improved distribution of electric field due to the arch-shaped indents. Thus, the novel indentation method bears advantages compared to measuring DBS of disk-shaped samples and allows for narrowing influences of extrinsic parameters. By obtaining breakdown channels close to the center of the indent, this technique additionally features the possibility of localizing the breakdown event. |
| Freie Schlagworte: | Dielectric breakdown strength, Ferroelectrics, Barium titanate, Tape casting, Indentation |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe |
| Hinterlegungsdatum: | 21 Jul 2022 05:08 |
| Letzte Änderung: | 21 Jul 2022 05:09 |
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