Spray pyrolysis-derived robust ferroelectric BiFeO 3 thin films.

Autor:	Nagashree MC; Department of Physics, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal-576104, India. bv.rajendra@manipal.edu., Kulkarni SD; Department of Atomic and Molecular Physics, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal-576104, India. suresh.dk@manipal.edu., Rajendra BV; Department of Physics, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal-576104, India. bv.rajendra@manipal.edu., Seidel J; School of Materials Science and Engineering, UNSW, Sydney, NSW, 2052, Australia.; ARC Centre of Excellence in Future Low-Energy Electronics Technologies, UNSW, Sydney, NSW, 2052, Australia., Murari MS; DST Purse Lab, Mangalore University, Mangalagangotri, Mangalore-574199, India., Sharma P; ARC Centre of Excellence in Future Low-Energy Electronics Technologies, UNSW, Sydney, NSW, 2052, Australia.; College of Science and Engineering, Flinders University, Bedford Park, Adelaide, SA, 5042, Australia. pankaj.sharma@flinders.edu.au.; Flinders Institute for Nanoscale Science and Technology, Flinders University, Adelaide, SA, 5042, Australia.
Jazyk:	angličtina
Zdroj:	Physical chemistry chemical physics : PCCP [Phys Chem Chem Phys] 2023 Aug 23; Vol. 25 (33), pp. 22286-22293. Date of Electronic Publication: 2023 Aug 23.
DOI:	10.1039/d3cp02877a
Abstrakt:	Scalable and low-cost synthesis of high-quality ferroic films is critical for the development of advanced electronic devices and sensors. Here, we employ solution-based spray pyrolysis to fabricate bismuth ferrite thin films on glass substrates and explore the impact of annealing conditions to attain functional thin films of superior quality and switchable polarization. Optimised thin films display polycrystalline nanostructured grains with the highest X-ray diffraction intensity along the (110) orientation and a mixed Fe 2+/3+ valence suggesting the presence of oxygen vacancies. The optimized films show a complex ferroelectric domain microstructure and exhibit robust nanoscale polarization switching in the range of several volts. Domains are found to scale with the sizes of nanocrystalline grains, which points to the role of surface-energy-related mechanisms affecting the domain patterns. Our results demonstrate the potential of spray pyrolysis for the fabrication of high-quality ferroelectric thin films and provide new opportunities for the development of low-cost scalable advanced electronic devices.
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu