Zhang, Mao-Hua ; Breckner, Patrick ; Frömling, Till ; Rödel, Jürgen ; Kodumudi Venkataraman, Lalitha (2020)
Role of thermal gradients on the depolarizationand conductivity in quenched Na1/2Bi1/2TiO3-BaTiO3.
In: Applied Physics Letters, (116)
doi: 10.1063/5.0013379
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Quenching has been demonstrated to increase the thermal stability of the piezoelectric properties of relaxor (1−x)Na1/2Bi1/2TiO3-xBaTiO3 (NBTxBT) by 40 °C. This work establishes a correlation between the quenching temperature and salient electrical (conductivity, piezoelectric and dielectric) properties of two NBTxBT variants. The impact of quenching on the mechanical properties is quantified in terms of changes in Young's modulus. The perspective for application is interrogated using a variation in the sample thickness and separating the sample interior from the sample surface. An in situ measurement of surface temperature during the quenching treatment is applied to validate the simulation for thickness-dependent thermal transport in the material and ensuing transient thermal stresses. The calculated stress intensity factor is then compared with the fracture toughness of the material. This study asserts that air quenching can be conducted without mechanical degradation. Thus, it can be an important alternative to existing industrial strategies to enhance the thermal stability of the piezoelectric properties of relaxor NBTxBT.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Zhang, Mao-Hua ; Breckner, Patrick ; Frömling, Till ; Rödel, Jürgen ; Kodumudi Venkataraman, Lalitha |
| Art des Eintrags: | Bibliographie |
| Titel: | Role of thermal gradients on the depolarizationand conductivity in quenched Na1/2Bi1/2TiO3-BaTiO3 |
| Sprache: | Englisch |
| Publikationsjahr: | 1 Juli 2020 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applied Physics Letters |
| (Heft-)Nummer: | 116 |
| DOI: | 10.1063/5.0013379 |
| Kurzbeschreibung (Abstract): | Quenching has been demonstrated to increase the thermal stability of the piezoelectric properties of relaxor (1−x)Na1/2Bi1/2TiO3-xBaTiO3 (NBTxBT) by 40 °C. This work establishes a correlation between the quenching temperature and salient electrical (conductivity, piezoelectric and dielectric) properties of two NBTxBT variants. The impact of quenching on the mechanical properties is quantified in terms of changes in Young's modulus. The perspective for application is interrogated using a variation in the sample thickness and separating the sample interior from the sample surface. An in situ measurement of surface temperature during the quenching treatment is applied to validate the simulation for thickness-dependent thermal transport in the material and ensuing transient thermal stresses. The calculated stress intensity factor is then compared with the fracture toughness of the material. This study asserts that air quenching can be conducted without mechanical degradation. Thus, it can be an important alternative to existing industrial strategies to enhance the thermal stability of the piezoelectric properties of relaxor NBTxBT. |
| 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: | 02 Jul 2020 05:43 |
| Letzte Änderung: | 02 Jul 2020 05:43 |
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