Ultrasonic attenuation measurements in sinter-forged YBa2Cu3O7−δ

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DOIResolve DOI: http://doi.org/10.1103/PhysRevB.39.843
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TypeArticle
Journal titlePhysical Review B
ISSN1098-0121
Volume39
Issue1
Pages843846; # of pages: 4
AbstractWe report ultrasonic attenuation measurements on sinter-forged YBa2Cu3O7−δ material, which differs from ordinary sintered material in that the crystallites are preferentially oriented to form a uniaxial sample. Three peaks in attenuation, at temperatures of 250, 180, and 70 K, were observed for longitudinal waves propagating perpendicular to the forging axis, which is similar to that reported in ordinary (isotropic) polycrystalline samples. However, for both transverse and longitudinal sound propagated along the forging axis we have a different behavior, with only one peak at 180 K, showing a strong anisotropy. It is suggested that sound waves traveling parallel to and normal to the Cu-O planes may account for the anisotropic effect, and a relaxation mechanism may explain the increase in shear wave attenuation which was seen with decreasing temperature.
Publication date
LanguageEnglish
Peer reviewedYes
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NPARC number21273081
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Record identifierffcee45a-fc46-4844-a4cb-7bd556770844
Record created2014-12-11
Record modified2016-05-09
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