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| Presentation | 2010-09-30 10:25 Acoustical Physical Constants of La3Ta0.5Ga5.3Al0.2O14 Single Crystal Yuji Ohashi (Tohoku Univ.), Tomoaki Karaki, Tao Lv (Toyama Pref. Uinv.), Mototaka Arakawa (Tohoku Univ.), Masatoshi Adachi (Toyama Pref. Uinv.), Jun-ichi Kushibiki (Tohoku Univ.)  US2010-61 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We measured accurate acoustical physical constants and their temperature coefficients for La3Ta0.5Ga5.3Al0.2O14 (LTGA) single crystal using the ultrasonic microspectroscopy (UMS) technology combined with the resonance method. Acoustic properties were measured at 20, 23, and 26°C by the UMS system for X-, Y-, Z-, 29.14°Y-, and 150.86°Y-cut specimens prepared from an LTGA ingot. Using the measured results (longitudinal- and shear-wave velocities, dielectric constants, density, and thermal expansion coefficients), we determined acoustical physical constants and their temperature coefficients around room temperatures. To confirm the accuracy of the determined constants, we compared the measured LSAW velocities and calculated ones using the determined constants at 23°C, resulting in good agreement within -3.0 to 1.1 m/s for all propagation directions. Using four X-cut rotated Y-bar (-30°Y, -15°Y, 0°Y, +30°Y) specimens and Y-cut specimen prepared from the same ingot, we also obtained the temperature coefficients in a range from -30 to +80°C by the resonance method. These temperature coefficients were corrected with the accurate ones obtained by the UMS technology even for a narrow temperature range around room temperature. Through this method proposed, we believe that more reliable constants and temperature coefficients can be obtained in a desired temperature range. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | La3Ta0.5Ga5.3Al0.2O14 (LTGA) single crystal / acoustical physical constants / temperature coefficient / ultrasonic microspectroscopy technology / resonance method / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 110, no. 213, US2010-61, pp. 69-74, Sept. 2010. | |
| Paper # | US2010-61 | |
| Date of Issue | 2010-09-22 (US) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | US2010-61 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2010-09-29 - 2010-09-30 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Paper Information | |
| Registration To | US |
| Conference Code | 2010-09-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Acoustical Physical Constants of La3Ta0.5Ga5.3Al0.2O14 Single Crystal |
| Sub Title (in English) | |
| Keyword(1) | La3Ta0.5Ga5.3Al0.2O14 (LTGA) single crystal |
| Keyword(2) | acoustical physical constants |
| Keyword(3) | temperature coefficient |
| Keyword(4) | ultrasonic microspectroscopy technology |
| Keyword(5) | resonance method |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Yuji Ohashi |
| 1st Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 2nd Author's Name | Tomoaki Karaki |
| 2nd Author's Affiliation | Toyama Prefectural University (Toyama Pref. Uinv.) |
| 3rd Author's Name | Tao Lv |
| 3rd Author's Affiliation | Toyama Prefectural University (Toyama Pref. Uinv.) |
| 4th Author's Name | Mototaka Arakawa |
| 4th Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 5th Author's Name | Masatoshi Adachi |
| 5th Author's Affiliation | Toyama Prefectural University (Toyama Pref. Uinv.) |
| 6th Author's Name | Jun-ichi Kushibiki |
| 6th Author's Affiliation | Tohoku University (Tohoku Univ.) |
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| Speaker | Author-1 |
| Date Time | 2010-09-30 10:25:00 |
| Presentation Time | 25 minutes |
| Registration for | US |
| Paper # | US2010-61 |
| Volume (vol) | vol.110 |
| Number (no) | no.213 |
| Page | pp.69-74 |
| #Pages | 6 |
| Date of Issue | 2010-09-22 (US) |
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