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| Presentation | 2009-09-30 10:55 Evaluation of Elastic Inhomogeneity in ZnO Crystal by Means of the Micro-LFB Ultrasonic Material Characterization System Sho Yoshida, Yuji Ohashi, Mototaka Arakawa, Jun-ichi Kushibiki, Noboru Sakagami (Tohoku Univ.)  US2009-51 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We evaluated ZnO single crystals using a micro-line-focus-beam ultrasonic material characterization (LFB-UMC) system with an improved spatial resolution. We prepared two small ZnO single crystals grown by the hydrothermal synthesis method. Leaky surface acoustic waves (LSAWs) velocity distributions were measured at 225 MHz for {001} (c-plane), {100} (m-plane), and {101} (p-plane) of one specimen and cross-sectional surfaces (±c-plane) of the other specimen. For the former specimen, we found the facts that +c- and m-planes are very resistive and p- and -c-planes are very conductive. For the latter specimen, we observed very conductive regions surrounding a very resistive seed crystal and very resistive surface at +c- and m-planes surrounding the conductive regions. The information should reflect changes in growth conditions of ZnO single crystals and will be used for further understanding the crystal growth processes. We also demonstrated that system calibration can easily and stably be made using a standard specimen of YX- ZnO (independent with piezoelectricity). | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | ZnO single crystal / line-focus-beam ultrasonic material characterization system / micro-line-focus-beam ultrasonic material characterization system / velocity of leaky surface acoustic waves / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 213, US2009-51, pp. 77-82, Sept. 2009. | |
| Paper # | US2009-51 | |
| Date of Issue | 2009-09-22 (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 | US2009-51 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2009-09-29 - 2009-09-30 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Noboribetsu Grand Hotel |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Paper Information | |
| Registration To | US |
| Conference Code | 2009-09-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Evaluation of Elastic Inhomogeneity in ZnO Crystal by Means of the Micro-LFB Ultrasonic Material Characterization System |
| Sub Title (in English) | |
| Keyword(1) | ZnO single crystal |
| Keyword(2) | line-focus-beam ultrasonic material characterization system |
| Keyword(3) | micro-line-focus-beam ultrasonic material characterization system |
| Keyword(4) | velocity of leaky surface acoustic waves |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Sho Yoshida |
| 1st Author's Affiliation | Graduate School of Engineering, Tohoku University (Tohoku Univ.) |
| 2nd Author's Name | Yuji Ohashi |
| 2nd Author's Affiliation | Graduate School of Engineering, Tohoku University (Tohoku Univ.) |
| 3rd Author's Name | Mototaka Arakawa |
| 3rd Author's Affiliation | Graduate School of Engineering, Tohoku University (Tohoku Univ.) |
| 4th Author's Name | Jun-ichi Kushibiki |
| 4th Author's Affiliation | Graduate School of Engineering, Tohoku University (Tohoku Univ.) |
| 5th Author's Name | Noboru Sakagami |
| 5th Author's Affiliation | Graduate School of Engineering, Tohoku University (Tohoku Univ.) |
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| Speaker | 1 |
| Date Time | 2009-09-30 10:55:00 |
| Presentation Time | 25 |
| Registration for | US |
| Paper # | IEICE-US2009-51 |
| Volume (vol) | IEICE-109 |
| Number (no) | no.213 |
| Page | pp.77-82 |
| #Pages | IEICE-6 |
| Date of Issue | IEICE-US-2009-09-22 |
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