| Presentation | 2017-10-28 The property in lithium tantalite family solid solution ceramics Ayato Yagi, Noriko Bamba, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The purpose of this study is to fabricate Lithium tantalate (LiTaO3:LT) solid solution ceramics with high Curie Temperature (TC). It has been confirmed that calcium zirconate (CaZrO3:CZ) forms solid solution with LT, and piezoelectricity can be obtained, however it decreases the TC of LT. A part of CZ was substituted by magnesium titanate (MgTiO3:MT) in order to raise the TC. LT solid solution ceramics with TC above 600℃ were obtained by substitution of MT for CZ in LT solid solution . Besides, adding SiO2 as a sintering aid increased the density of LT solid solution ceramics, and the ceramics could be polarized. Although phase shift of all ceramics remained in capacitive region, the resonances in radial-extensional mode were observed. That is, the piezoelectric properties of the ceramics were confirmed. Furthermore, nonstoichiometric (Li0.9Mg0.02Ca0.08)(Ta0.89Ti0.02Zr0.11)O3 ceramics with TC of 608℃ showed phase shift of 56.7°,mechanical quality factor, Qm=1412, d33=6 pC/N. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Lead-free piezoelectric ceramics / Lithium tantalate / Solid solution / Resonance properties / high Curie Temperature |
| Paper # | CPM2017-75 |
| Date of Issue | 2017-10-20 (CPM) |
| Conference Information | |
| Committee | CPM |
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| Conference Date | 2017/10/27(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Shinshu Univ. Nagano-Education Campus, E7 building 3F |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Fumihiko Hirose(Yamagata Univ.) |
| Vice Chair | Mayumi Takeyama(Kitami Inst. of Tech.) |
| Secretary | Mayumi Takeyama(Nihon Univ.) |
| Assistant | Yuichi Akage(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Component Parts and Materials |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | The property in lithium tantalite family solid solution ceramics |
| Sub Title (in English) | |
| Keyword(1) | Lead-free piezoelectric ceramics |
| Keyword(2) | Lithium tantalate |
| Keyword(3) | Solid solution |
| Keyword(4) | Resonance properties |
| Keyword(5) | high Curie Temperature |
| 1st Author's Name | Ayato Yagi |
| 1st Author's Affiliation | Shinshu University(Shinshu Univ.) |
| 2nd Author's Name | Noriko Bamba |
| 2nd Author's Affiliation | Shinshu University(Shinshu Univ.) |
| Date | 2017-10-28 |
| Paper # | CPM2017-75 |
| Volume (vol) | vol.117 |
| Number (no) | CPM-268 |
| Page | pp.pp.45-49(CPM), |
| #Pages | 5 |
| Date of Issue | 2017-10-20 (CPM) |