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Ultrasonic Attenuation in Lead

Description: The absorption of longitudinal ultrasonic waves was studied as a function of transverse magnetic field in pure single crystals of lead at 1.2 deg K. The results were found to be generally consistent with the Fermi surface of lead suggested by Gold. In particular a detailed study of the magneto-acoustic oscillations, as a function of sample orientation and field direction, allowed the determination of some of the dimensions of the hole surface in the second Brillouin zone and revealed a number o… more
Date: January 1, 1963
Creator: Mackintosh, A.R.
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Partner: UNT Libraries Government Documents Department
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Thermal Study of Crystal Field Splittings in Erbium Ethylsulfate

Description: The heat capacities of erbium and yttrium ethylsulfates were measured in the range 12-300 deg K. The magnetic contribution of the erbium ion was evaluated with the help of an assumption concernlng the difference in lattice contributions between the erbium and yttrium salts. The contribution agrees, to within experimental error, with the experimental energy level scheme for the /sup 4/I/ sub 15/2/ state previously published. (auth)
Date: December 1, 1962
Creator: Gerstein, B. C.; Penney, C. J. & Spedding, F. H.
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Partner: UNT Libraries Government Documents Department
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Defect Mobility and Reaction: Diffusional and Rate Theory Formulations in One and Three Dimensions.

Description: The migration of defects, leading to eventual reaction, is analyzed on the basis of diffusion theory and compared with chemical rate theory. A diffusional treatment is carried out in detail and in special cases of particular interest. Correlations between interstitials and vacancies, typical of metals following electron irradiation, are examined. Trapping by impurities and dislocations, thermal conversion, and high temperature bombardment are also treated. In each case, formulations are develop… more
Date: October 31, 1970
Creator: Simpson, M. & Sosin, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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