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Citation 62

Accession Number

001263034

Author

Ilisavskii YuV. Kulakova LA. Kheifets AS. Yakhkind EZ.

Institution

A.F. Ioffe Physicotech. Inst., Acad. of Sci., Leningrad, USSR.

Title

Absorption of sound in silicon carbide.

Source

Fizika Tverdogo Tela, vol.20, no.1, Jan. 1978, pp.275-6. USSR.

Country of Publication

USSR.

Translated Source

Soviet Physics - Solid State (USA), vol.20, no.1, Jan. 1978, pp.158-9. CODEN:
SPSSA7. ISSN: 0038-5654.

Abstract

Samples were prepared from single crystals of the hexagonal modification of silicon carbide (6H polytype known as alpha -SiC), whose room-temperature conductivity was sigma =1.6 Omega /sup -1/.cm/sup -1/. A sample of 0.8*2.5*10 mm dimensions was cut so that its length along the c/sub 6/ axis was 0.8 mm). The attenuation of piezoelectrically active (polarization along the c/sub 6/ axis) and inactive (polarization perpendicular to the c/sub 6/ axis) shear elastic waves in the basal plane have been determined. The velocity of sound was V/sub act/=7.2*10/sup 5/ cm/sec and V/sub inact/=8.0*10/sup 5/ cm/sec. (5 References).

Abstract Number

A78088000

Subject Headings

Acoustoelectric effects
Piezoelectric semiconductors
Silicon compounds
Ultrasonic absorption

Key Phrase Identifiers

hexagonal modification; 6H polytype; shear elastic waves; velocity of sound;
sound absorption.

Classification Codes

Acoustic properties of solids [A6265]; Acoustoelectric effects (electronic
transport) [A7250]; Piezoelectricity and electrostriction [A7760].

Treatment

Experimental.

CODEN

FTVTAC

Language

English.

ISSN

0367-3294.

Publication Type

Journal Paper.

Update Code

197800.

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