| Presentation | 2006-06-30 Piezo-Dielectric Effect in Antiferroelectric NaNbO_3 Ceramics Naoyuki ENDO, Michiaki KUBO, Noriko BAMBA, Tatsuo FUKAMI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The effect that the permittivity of antiferroelectrics depends on the elastic stress has been discussed with special interest to the load sensor applications. Although sodium niobate (NaNbO_3) employed in this work as a typical antiferroelectrics has been hitherto known very difficult to obtain as a densely sintered ceramic body, we have succassfully obtained the dense ceramics by invastigating their nonstoichiometric compositions. Their electrostatic capacitance was determined from the output frequency of the timer oscillator circuit. In case of the ferroelectrics, their permittivity depends not only on the elastic strass but also on the elapsed time after a fixed stress application, whereas such unsteady behavior was not observed in the antiferroelectric sodium niobate. The phenomenon has been discussed from the view point of the interaction between the polarization and space chargas, which exist only in ferroelectrics but in antiferroelectric. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Antiferroelectric / Elastic stress detection / Load sensor / Timer IC oscillation circuit / Drift phenomena / Sodium niobate / Reverse electrostrictional effect / Piezo-Dielectric effect / Space charge effect |
| Paper # | EMD2006-6,CPM2006-30,OME2006-40 |
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| Conference Information | |
| Committee | CPM |
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| Conference Date | 2006/6/23(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Component Parts and Materials (CPM) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Piezo-Dielectric Effect in Antiferroelectric NaNbO_3 Ceramics |
| Sub Title (in English) | |
| Keyword(1) | Antiferroelectric |
| Keyword(2) | Elastic stress detection |
| Keyword(3) | Load sensor |
| Keyword(4) | Timer IC oscillation circuit |
| Keyword(5) | Drift phenomena |
| Keyword(6) | Sodium niobate |
| Keyword(7) | Reverse electrostrictional effect |
| Keyword(8) | Piezo-Dielectric effect |
| Keyword(9) | Space charge effect |
| 1st Author's Name | Naoyuki ENDO |
| 1st Author's Affiliation | Nishikaru Precision co., ltd() |
| 2nd Author's Name | Michiaki KUBO |
| 2nd Author's Affiliation | Facultly of Engineering, Shinshu University |
| 3rd Author's Name | Noriko BAMBA |
| 3rd Author's Affiliation | Facultly of Engineering, Shinshu University |
| 4th Author's Name | Tatsuo FUKAMI |
| 4th Author's Affiliation | Facultly of Engineering, Shinshu University |
| Date | 2006-06-30 |
| Paper # | EMD2006-6,CPM2006-30,OME2006-40 |
| Volume (vol) | vol.106 |
| Number (no) | 131 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |