| Phase structure, microstructure, electrical and energy storage properties of SBNLT lead free ceramics with Zr4+ substituted into B-sites |
Thanapon Sinkruason1, Anupong Luangpangai1, Phongthorn Julphunthong2,3, Aurawan Rittidech4, Phieraya Pulphol5, Naratip Vittayakorn6, Theerachai Bongkarn1,2
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1Department of Physics, Faculty of Science, Naresuan University, Phitsanulok 65000, Thailand
2Research Center for Academic Excellence in Applied Physics, Faculty of Science, Naresuan University, Phitsanulok 65000, Thailand
3Department of Civil Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand
4Department of Physics, Faculty of Science, Mahasarakham University, Mahasarakham 44150, Thailand
5Department of Materials Science, Faculty of Science, Srinakharinwirot University, 114 Sukhumvit 23, Watthana, Bangkok 10110, Thailand
6Advanced Materials Research Unit, Faculty of Science, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand |
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Received: February 14, 2024; Revised: April 1, 2024 Accepted: April 14, 2024. Published online: May 13, 2024. |
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| ABSTRACT |
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Lead-free (Sr0.3Bi0.35Na0.335Li 0.015) (Ti1− xZrx) O3 ceramics (SBNLT1− xZrx) with x = 0–0.04 were prepared via the solid-state combustion technique using glycine as the fuel. The influence of Zr content on the phase structure, microstructure, electrical properties, and energy storage properties of the SBNLT1− xZrx ceramics was examined. The presence of a pure perovskite phase was shown by X-ray diffraction (XRD) patterns, with the coexistence of rhombohedral and tetragonal phases in all samples, as certified by the Rietveld refinement method. Scanning electron microscopy (SEM) was utilized to observe the morphology of the SBNLT1− xZrx ceramics, which revealed cube shaped grains with anisotropic growth. Average grain size increased from 2.01 to 2.49 μm when x increased from 0 to 0.01 and then reduced with further increases in Zr content. The maximum dielectric constant dropped from 4667 to 2990 when x increased from 0 to 0.04, caused by a shift from the morphotropic phase boundary (MPB). The maximum polarization (Pmax) of 29.18 μC/cm2, energy storage density (Wtotal) of 0.851 J/cm3 and recoverable energy storage (Wrec) of 0.609 J/cm3 were achieved when x = 0.02. |
| Key words:
SBNLT1− xZrx · Phase structure · Electrical · Energy storage |
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