Material design of two-phase-coexisting niobate dielectrics by electrostatic adsorption
In: Japanese Journal of Applied Physics, Jg. 56 (2017-09-26), S. 10PC08
Online
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Zugriff:
A material design process using electrostatic adsorption was proposed to synthesize composite ceramics with a two-phase-coexisting structure. Supported particles were fabricated by the electrostatic adsorption of (Na,K)NbO3–SrTiO3 (NKN–ST) nanoparticles on (Na,K)NbO3–Ba2NaNb5O15 (NKN–BNN) particles. NKN–ST and NKN–BNN were well dispersed with no aggregate in NKN–ST/NKN–BNN ceramics synthesized using the supported particles in comparison with ceramics synthesized using a mixture obtained by simply mixing NKN–ST and NKN–BNN powder. The temperature dependence of dielectric constant is closely related to the composite structure and the dielectric constant was stable in a wide temperature range from room temperature to 400 °C. Capacitance for DC bias was also insensitive to temperature in the range of 0–2 kV/mm, and the change rate of the capacitance was within ±5% in the temperature range from room temperature to 200 °C.
| Titel: |
Material design of two-phase-coexisting niobate dielectrics by electrostatic adsorption
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| Autor/in / Beteiligte Person: | Fuchigami, Teruaki ; Kakimoto, Ken-ichi ; Yoshida, Katsuya |
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| Zeitschrift: | Japanese Journal of Applied Physics, Jg. 56 (2017-09-26), S. 10PC08 |
| Veröffentlichung: | IOP Publishing, 2017 |
| Medientyp: | unknown |
| ISSN: | 1347-4065 (print) ; 0021-4922 (print) |
| DOI: | 10.7567/jjap.56.10pc08 |
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