NDLI: Temperature coefficients of selected material constants of dilithium tetraborate (Li/sub 2/B/sub 4/O/sub 7/)

Content Provider	IEEE Xplore Digital Library
Author	Weaver, G.S. Bright, V.M. Kosinski, J.A.
Copyright Year	1995
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Air Force Inst. of Technol., Wright-Patterson AFB, OH, USA (Weaver, G.S.; Bright, V.M.)
Abstract	Dilithium tetraborate is a promising piezoelectric material for both bulk acoustic wave and surface acoustic wave devices. In order to design temperature compensated devices, it is necessary to know the behavior of the material constants with respect to temperature variations. In this paper, the first and second order temperature coefficients of the material constants c/sub 11//sup E/, c/sub 12//sup E/, c/sub 66//sup E/, and e/sub 15/ of Li/sub 2/B/sub 4/O/sub 7/ have been measured over a temperature range of 20/spl deg/C to 150/spl deg/C. An improved resonator method was used to measure the fundamental zero mass loading antiresonance frequencies of selected pure-mode orientations of Li/sub 2/B/sub 4/O/sub 7/. Material constants extraction was performed using a linear least squares matrix method. The resulting material constant curves were fit with a third order power series to obtain their corresponding temperature coefficients. The calculated first order temperature coefficients of the material constants show reasonable agreement with previously published values. The calculated second order coefficients do not agree well with the previously published values, and may help to resolve the large discrepancies between predicted and measured behavior of Li/sub 2/B/sub 4/O/sub 7/ resonators.
Starting Page	645
Ending Page	648
File Size	272322
Page Count	4
File Format	PDF
ISBN	0780329406
ISSN	10510117
DOI	10.1109/ULTSYM.1995.495655
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-11-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Crystalline materials Eigenvalues and eigenfunctions Piezoelectric materials Temperature distribution Frequency measurement Data mining Acoustic waves Temperature measurement Least squares methods Crystals
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in