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Paper Abstract and Keywords
Presentation 2012-08-27 13:40
Determination Method of Acoustical Physical Constants and Their Temperature Coefficients of La<sub>3</sub>Ta<sub>0.5</sub>Ga<sub>5.3</sub>Al<sub>0.2</sub>O<sub>14</sub> Single Crystal
Yuji Ohashi (Tohoku Univ.), Tomoaki Karaki (Toyama Pref. Univ.), Hitoshi Yoshida (Tohoku Univ.), Tao Lv (Toyama Pref. Univ.), Mototaka Arakawa (Tohoku Univ.), Masatoshi Adachi (Toyama Pref. Univ.), Jun-ichi Kushibiki (Tohoku Univ.) US2012-38
Abstract (in Japanese) (See Japanese page) 
(in English) We proposed a determination method of 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. Combining the temperature coefficients obtained by the resonance method with the absolute values of constants obtained by the UMS technology, we can determine more reliable constants and temperature coefficients.
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. 112, no. 186, US2012-38, pp. 23-26, Aug. 2012.
Paper # US2012-38 
Date of Issue 2012-08-20 (US) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee US  
Conference Date 2012-08-27 - 2012-08-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Pukyong National University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General, Underwater Acoustics (Co-Organization:The Marine Acoustics Society of Japan, Youngnam Chapter of The Acoustical Society of Korea) 
Paper Information
Registration To US 
Conference Code 2012-08-US 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Determination Method of Acoustical Physical Constants and Their Temperature Coefficients of La<sub>3</sub>Ta<sub>0.5</sub>Ga<sub>5.3</sub>Al<sub>0.2</sub>O<sub>14</sub> 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 Pref. Univ. (Toyama Pref. Univ.)
3rd Author's Name Hitoshi Yoshida  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
4th Author's Name Tao Lv  
4th Author's Affiliation Toyama Pref. Univ. (Toyama Pref. Univ.)
5th Author's Name Mototaka Arakawa  
5th Author's Affiliation Tohoku University (Tohoku Univ.)
6th Author's Name Masatoshi Adachi  
6th Author's Affiliation Toyama Pref. Univ. (Toyama Pref. Univ.)
7th Author's Name Jun-ichi Kushibiki  
7th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker
Date Time 2012-08-27 13:40:00 
Presentation Time 20 
Registration for US 
Paper # IEICE-US2012-38 
Volume (vol) IEICE-112 
Number (no) no.186 
Page pp.23-26 
#Pages IEICE-4 
Date of Issue IEICE-US-2012-08-20 


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