Approximate Elastic Spectrum of &bgr;‐AuZn from Temperature Diffuse Scattering of X‐Rays
作者:
Milton Schwartz,
Leonard Muldawer,
期刊:
Journal of Applied Physics
(AIP Available online 1958)
卷期:
Volume 29,
issue 11
页码: 1561-1568
ISSN:0021-8979
年代: 1958
DOI:10.1063/1.1722993
出版商: AIP
数据来源: AIP
摘要:
The temperature diffuse scattering of x‐rays from a single crystal of &bgr;‐AuZn has been measured at room temperature using a Geiger counter diffractometer and crystal monochromatic CuK&agr;radiation. Acoustical frequency and velocity dispersion curves were obtained for the symmetry axes using the theories of James and Laval. Integrated intensity measurements of Bragg reflections from the alloy gave Debye temperatures of 153°K and 220°K for gold and zinc, respectively. The velocities at infinite wavelength yielded elastic constants ofc11= 5.3c12= 3.5, andc44= 3.0 in units of 1011dynes per cm. An approximate frequency spectrum was calculated.
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