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Elastic, anelastic, and piezoelectric coefficients of GaN
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10.1063/1.3674271
/content/aip/journal/jap/111/1/10.1063/1.3674271
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/1/10.1063/1.3674271

Figures

Image of FIG. 1.
FIG. 1.

Resonance spectrum of a specimen measured in a vacuum. Inset shows an enlarged resonance peak.

Image of FIG. 2.
FIG. 2.

(Color online) Normalized contributions of Cij and eij to resonance frequencies.

Image of FIG. 3.
FIG. 3.

(Color online) Comparison of computed (left) and measured (right) surface displacement distributions at two resonance frequencies.

Tables

Generic image for table
Table I.

Errors (%) in Cij and eij caused by the fluctuation of resonance frequency among three independent measurements Δf (0.06%) and measurement errors in mass density Δρ (0.09%) and dimension Δd (adding 1 μm in edge lengths, corresponding to volume change of 0.09%).

Generic image for table
Table II.

Elastic Cij (GPa), piezoelectric eij (C/m2), and anelastic (×10−5) coefficients of wurtzite GaN. The values in parentheses are calculation results. We determined the coefficients for two crystals whose carrier density was 2.2 × 1017 and 9.3 × 1017 cm−3. We define their average values as the coefficients of the wurtzite GaN.

Generic image for table
Table III.

Diagonal components of internal friction tensor of GaN, quartz, langasite, and TeO2 (×10−5).

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/content/aip/journal/jap/111/1/10.1063/1.3674271
2012-01-06
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Elastic, anelastic, and piezoelectric coefficients of GaN
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/1/10.1063/1.3674271
10.1063/1.3674271
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