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High temperature creep‐mediated functionality in polycrystalline barium titanate

Ren, Pengrong ; Höfling, Marion ; Koruza, Jurij ; Lauterbach, Stefan ; Jiang, Xijie ; Frömling, Till ; Khatua, Dipak Kumar ; Dietz, Christian ; Porz, Lukas ; Ranjan, Rajeev ; Kleebe, Hans‐Joachim ; Rödel, Jürgen (2023)
High temperature creep‐mediated functionality in polycrystalline barium titanate.
In: Journal of the American Ceramic Society, 2019, 103 (3)
doi: 10.26083/tuprints-00023203
Artikel, Zweitveröffentlichung, Verlagsversion

Kurzbeschreibung (Abstract)

Dislocations in oxides can be described as charged line defects and means for one-dimensional doping, which can tune electrical and thermal properties. Furthermore, theoretically it was shown that dislocations can pin ferroelectric domain walls. Broader application of this concept hinges on the development of a methodology to avail this approach to polycrystalline ceramics. To this end, we use different creep mechanisms as a method to introduce multidimensional defects and quantify structural changes. A deformation map for fine-grained barium titanate is provided and the influences of the defects and creep regimes are correlated in this first study to modifications of electrical conductivity, dielectric, ferroelectric, and piezoelectric properties. A plastic deformation of 1.29% resulted in an increase in the Curie temperature by 5°C and a decrease in electromechanical strain by 30%, pointing toward electromechanical hardening by dislocations.

Typ des Eintrags: Artikel
Erschienen: 2023
Autor(en): Ren, Pengrong ; Höfling, Marion ; Koruza, Jurij ; Lauterbach, Stefan ; Jiang, Xijie ; Frömling, Till ; Khatua, Dipak Kumar ; Dietz, Christian ; Porz, Lukas ; Ranjan, Rajeev ; Kleebe, Hans‐Joachim ; Rödel, Jürgen
Art des Eintrags: Zweitveröffentlichung
Titel: High temperature creep‐mediated functionality in polycrystalline barium titanate
Sprache: Englisch
Publikationsjahr: 2023
Ort: Darmstadt
Publikationsdatum der Erstveröffentlichung: 2019
Verlag: Wiley
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of the American Ceramic Society
Jahrgang/Volume einer Zeitschrift: 103
(Heft-)Nummer: 3
DOI: 10.26083/tuprints-00023203
URL / URN: https://tuprints.ulb.tu-darmstadt.de/23203
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Herkunft: Zweitveröffentlichungsservice
Kurzbeschreibung (Abstract):

Dislocations in oxides can be described as charged line defects and means for one-dimensional doping, which can tune electrical and thermal properties. Furthermore, theoretically it was shown that dislocations can pin ferroelectric domain walls. Broader application of this concept hinges on the development of a methodology to avail this approach to polycrystalline ceramics. To this end, we use different creep mechanisms as a method to introduce multidimensional defects and quantify structural changes. A deformation map for fine-grained barium titanate is provided and the influences of the defects and creep regimes are correlated in this first study to modifications of electrical conductivity, dielectric, ferroelectric, and piezoelectric properties. A plastic deformation of 1.29% resulted in an increase in the Curie temperature by 5°C and a decrease in electromechanical strain by 30%, pointing toward electromechanical hardening by dislocations.

Freie Schlagworte: barium titanate, creep, dislocations, ferroelectricity/ferroelectric materials, piezoelectric materials/ properties
Status: Verlagsversion
URN: urn:nbn:de:tuda-tuprints-232035
Sachgruppe der Dewey Dezimalklassifikatin (DDC): 500 Naturwissenschaften und Mathematik > 530 Physik
500 Naturwissenschaften und Mathematik > 540 Chemie
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
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physics of Surfaces
Hinterlegungsdatum: 10 Feb 2023 09:26
Letzte Änderung: 13 Feb 2023 06:39
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