Super-stable permittivity and low dielectric loss of (1- x )Na 0.5 Bi 0.5+y TiO 3 - x NaTaO 3 ceramics within an ultra-wide temperature range
Journal of Materiomics, ISSN: 2352-8478, Vol: 9, Issue: 3, Page: 482-491
2023
- 17Citations
- 8Captures
- 1Mentions
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Most Recent News
Data on Materials Science Published by Researchers at Xi'an University of Technology [Super-stable permittivity and low dielectric loss of (1-x)Na0.5Bi0.5+yTiO3-xNaTaO3 ceramics within an ultra-wide temperature range]
2023 MAY 08 (NewsRx) -- By a News Reporter-Staff News Editor at NewsRx Science Daily -- New study results on materials science have been published.
Article Description
This work designs a new system (1- x )Na 0.5 Bi 0.5+y TiO 3 - x NaTaO 3 with a nonstoichiometric bismuth ratio, which is used as dielectrics of ceramics capacitors. Phase structure evolution of (1- x )Na 0.5 Bi 0.5+y TiO 3 - x NaTaO 3 is characterized using XRD, Raman and TEM. Dielectric and resistant properties of (1- x )Na 0.5 Bi 0.5+y TiO 3 - x NaTaO 3 are investigated with increasing concentration of NaTaO 3. With these investigations, the structure and defect chemistry of (1- x )Na 0.5 Bi 0.5+y TiO 3 - x NaTaO 3 are rationalized and their respective impact on capacitor properties are elucidated. The optimized composition 0.8Na 0.5 Bi 0.51 TiO 3 -0.2NaTaO 3 possesses an ultra-wide operating temperature range (-92–398 °C), in which both stable permittivity and low dielectric loss is obtained. Furthermore, the fabrication of multilayer ceramics capacitors (MLCC) based on 0.8Na 0.5 Bi 0.51 TiO 3 -0.2NaTaO 3 dielectrics is investigated. With the addition of sintering aids, 0.8Na 0.5 Bi 0.51 TiO 3 -0.2NaTaO 3 could be co-fired with Ag at 910 °C in air, and the low temperature co-fired ceramic (LTCC) capacitors maintain good temperature stability of permittivity and low dielectric loss in -100–352 °C. Therefore, our work provides a new route for preparing ultra-wide operating temperature capacitors at low manufacturing costs.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S2352847823000023; http://dx.doi.org/10.1016/j.jmat.2022.12.004; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85148711250&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S2352847823000023; https://dx.doi.org/10.1016/j.jmat.2022.12.004
Elsevier BV
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