Journal Article

PUBDB-2022-00958

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Uncovering the symmetry of the induced ferroelectric phase transformation in polycrystalline barium titanate

Lemos da Silva, L. (Corresponding author)Extern* ; Lee, K.-Y.Extern* ; Petrick, S. ; Etter, M.DESY* ; Schökel, A.Extern*DESY* ; Chaves, C. G. ; Oliveira da Silva, N. ; Lalitha, K. V. ; Picht, G. ; Hoffmann, M. J. ; Hinterstein, M.Extern*

2021
American Inst. of Physics Melville, NY

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Please use a persistent id in citations: doi:10.1063/5.0068703  doi:10.3204/PUBDB-2022-00958

Abstract: Microstructural design is a widespread approach to tailor the properties of functional materials with the size effect being an effective constraint that modifies physical phenomena. In this work, we investigate the grain size effect on the properties and the electric field induced phase transformation behavior in barium titanate. A broad range of unimodal average grain size distribution between 0.4 and 15 μm was successfully sintered avoiding abnormal grain growth. Samples with a grain size close to the range of 1–2 μm, balancing microstructural strain, presence, and mobility of domain walls to allow the field induced crystal phase transformation, showed optimal electromechanical and dielectric properties. By means of in situ high energy x-ray diffraction and a high-resolution multianalyzer detector, we distinguish and quantify a tetragonal–orthorhombic phase transformation induced by an electric field, providing unambiguous proof of this induced phase transformation. These results contribute to the understanding of fundamental questions about the piezoelectric effect in barium titanate and consequently other similar systems.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Experimentebetreuung PETRA III (FS-PET-D)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. FS-Proposal: I-20191018 (I-20191018) (I-20191018)
4. FS-Proposal: I-20210624 (I-20210624) (I-20210624)

Experiment(s):

1. PETRA Beamline P02.1 (PETRA III)

Appears in the scientific report 2021

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; Nationallizenz ; PubMed Central ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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