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BaTiO ₃ -based composites provide new opportunities enabled by the cold sintering process

https://doi.org/10.35848/1347-4065/acf478

Okazaki, Toshiki; Sada, Takao; Tsuji, Kosuke; Fujioka, Yoshihiro; Randall, Clive A. (September 2023, Japanese Journal of Applied Physics)

Abstract This paper reviews the synthesis of BaTiO₃-based ceramic and composites through the cold sintering process. Cold sintering is a densification process that works with a low-temperature mechanism known as pressure solution creep. This provides several opportunities to fabricate BaTiO₃into new composite structures that could provide important advanced dielectric properties. Here we revisit the challenges of densifying a material such as BaTiO₃that has incongruent dissolution. We consider the issues of surface chemistry, selection of transient flux, core–shell designs in BaTiO₃, co-sintering with polymers in the grain boundaries and the technical challenges associated with incorporating all these ideas into tape casting steps for future fabrication of multilayer device structures.
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Highly Reliable BaTiO ₃ ‐Polyphenylene Oxide Nanocomposite Dielectrics via Cold Sintering

https://doi.org/10.1002/admi.202100963

Sada, Takao; Tsuji, Kosuke; Ndayishimiye, Arnaud; Fan, Zhongming; Fujioka, Yoshihiro; Randall, Clive A. (September 2021, Advanced Materials Interfaces)
null (Ed.)
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Surface modification of BaTiO ₃ with catechol surfactant and effects on cold sintering

https://doi.org/10.1063/5.0049905

Sada, Takao; Ndayishimiye, Arnaud; Fan, Zhongming; Fujioka, Yoshihiro; Randall, Clive A. (May 2021, Journal of Applied Physics)

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Roadmap for densification in cold sintering: Chemical pathways

https://doi.org/10.1016/j.oceram.2020.100019

Ndayishimiye, Arnaud; Sengul, Mert Y.; Sada, Takao; Dursun, Sinan; Bang, Sun Hwi; Grady, Zane A.; Tsuji, Kosuke; Funahashi, Shuichi; van Duin, Adri C.T.; Randall, Clive A. (July 2020, Open Ceramics)
null (Ed.)
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