DocumentCode
1500295
Title
Ultrasonic measurements in sinter-forged high Tc superconductor YBa2Cu3O7-δ
Author
Xu, M.F. ; Schenstrom, A. ; Hong, Y. ; Bein, D. ; Sarma, Bimal K. ; Levy, M. ; Zhao, Z. ; Adenwalla, S. ; Moreau, A. ; Robinson, Q. ; Johnson, D.L. ; Hwu, S.J. ; Poeppelmeier, K.R. ; Ketterson, J.B.
Author_Institution
Dept. of Phys., Wisconsin Univ., Milwaukee, WI, USA
Volume
25
Issue
2
fYear
1989
fDate
3/1/1989 12:00:00 AM
Firstpage
2414
Lastpage
2417
Abstract
Both ultrasonic attenuation and velocity as a function of temperature from 4.2 K to room temperature were measured on sinter-forged samples of YBa2Cu3O7-δ , which have more than 80% alignment of the c-axis of the grains parallel to the forging axis. Strong anisotropy was found both in the attenuation and the velocity when propagating sound waves in different directions relative to the forging axis. Hysteresis was observed in the velocity changes
Keywords
barium compounds; high-temperature superconductors; ultrasonic absorption; ultrasonic velocity; yttrium compounds; 4.2 to 293 K; US velocity; YBa2Cu3O7-δ; anisotropy; c-axis; high temperature superconductors; hysteresis; propagating sound waves; sinter-forged high Tc superconductor; temperature dependence; ultrasonic attenuation; Attenuation measurement; Cooling; Hysteresis; Phase measurement; Softening; Superconducting transition temperature; Temperature dependence; Time measurement; Ultrasonic variables measurement; Velocity measurement;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.92793
Filename
92793
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