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| Title: | The fabrication and electrocaloric effect of bimodal-grain structure (Ba0.60Sr0.40)TiO3 using the induced abnormal grain growth method | Authors: | Zhang, HF Chen, X Gao, J Lam, KH Liang, SD Fei, LF Mak, CL Chen, JF |
Issue Date: | 2019 | Source: | IOP conference series : materials science and engineering, 2019, v. 678, no. 1, 12138 | Abstract: | Bimodal-grain structure (Ba0.6Sr0.4)TiO3 ceramics had been prepared using induced abnormal grain growth method (IAGG). Two grain size distributions, between 10 ∼ 20 μm and 100 ∼ 300 μm, were found during the sintering temperature of 1250 ∼ 1350°C. Our results suggested that the ultra-large grain exhibited the high dielectric and ferroelectric properties comparable to the single crystal. At the same time, the fine-grain caused a phase diffusion transition at the Curie temperature about 20°C. The direct measured electrocaloric effect showed that the best performance is achieved with ΔT of 0.6 K, and ΔS of 1.02 J kg-1K-1 near room temperature and electric field strength of 2 MV/m. | Publisher: | Institute of Physics Publishing | Journal: | IOP conference series : materials science and engineering | ISSN: | 1757-8981 | EISSN: | 1757-899X | DOI: | 10.1088/1757-899X/678/1/012138 | Description: | 11th International Conference on High-Performance Ceramics, CICC 2019, China, 25-29 May 2019 | Rights: | Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd The following publication Zhang, H. F., Chen, X., Gao, J., Lam, K. H., Liang, S. D., Fei, L. F., ... & Chen, J. F. (2019, November). The Fabrication and Electrocaloric Effect of Bimodal-Grain Structure (Ba0. 60Sr0. 40) TiO3 Using the Induced Abnormal Grain Growth Method. In IOP Conference Series: Materials Science and Engineering (Vol. 678, No. 1, p. 012138). IOP Publishing, |
| Appears in Collections: | Conference Paper |
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| Zhang_Fabrication_Electrocaloric_Effect.pdf | 965.63 kB | Adobe PDF | View/Open |
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