Spatially-resolved relaxor to ferroelectric phase switching in 0.93Na1/2Bi1/2TiO3-0.07BaTiO3 ceramics

Shi X, Eckstein U, Li Y, Hall D, Khansur NH (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Journal of Materiomics Elsevier

DOI: 10.1016/j.jmat.2022.03.005

Abstract

In situ, spatially-resolved synchrotron X-ray diffraction was utilized to investigate the electric field-induced heterogenous phase transformation of nonergodic relaxor 0.93Na1/2Bi1/2TiO3-0.07BaTiO3 ceramics. A Cu electrode was coated on one surface of a rectangular sample by aerosol deposition (AD), while a Pt layer was deposited on the opposite surface by sputter deposition. It is anticipated that a different stress state and/or domain morphology should occur on the AD deposited Cu electrode side due to the particle impact-consolidation deposition process. Under an electric field, different sample regions, i.e., AD, Middle, and Sputter sides, showed systematic changes in the relaxor to ferroelectric phase transition behavior. In particular, most <001> grains transformed at a sub-coercive field of 0.8 kV/mm, while the majority of the <111> grains only appeared to undergo transitions at a higher field (2.4 kV/mm). Also, the tetragonal phase became the dominant structure at higher field levels. Importantly, both <111> and <001> grains undergo phase switching at lower fields in the region close to the AD-processed layer. The study indicates that the AD process-induced stress can facilitate the electric field-induced relaxor to ferroelectric phase transition, i.e., the AD Cu side showed more significant lattice strain and domain texture than the sputter Pt side.

Authors with CRIS profile

Xi Shi Lehrstuhl für Glas und Keramik Udo Eckstein Lehrstuhl für Glas und Keramik Neamul Hayet Khansur Lehrstuhl für Glas und Keramik

Involved external institutions

University of Manchester GB United Kingdom (GB)

How to cite

APA:

Shi, X., Eckstein, U., Li, Y., Hall, D., & Khansur, N.H. (2022). Spatially-resolved relaxor to ferroelectric phase switching in 0.93Na1/2Bi1/2TiO3-0.07BaTiO3 ceramics. Journal of Materiomics. https://dx.doi.org/10.1016/j.jmat.2022.03.005

MLA:

Shi, Xi, et al. "Spatially-resolved relaxor to ferroelectric phase switching in 0.93Na1/2Bi1/2TiO3-0.07BaTiO3 ceramics." Journal of Materiomics (2022).

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