IsTc(P) for lead suitable as a low‐temperature manometer?
作者:
J. Thomasson,
C. Ayache,
I. L. Spain,
M. Villedieu,
期刊:
Journal of Applied Physics
(AIP Available online 1990)
卷期:
Volume 68,
issue 11
页码: 5933-5935
ISSN:0021-8979
年代: 1990
DOI:10.1063/1.346924
出版商: AIP
数据来源: AIP
摘要:
The superconducting transition temperature of lead has been reexamined as a function of pressure to 17 GPa (170 kbars).Tc(P) determined with helium as the pressure medium differed from that when 4:1 methanol:ethanol was used. The disagreement is particularly net in the fcc phase and can be ascribed to a sensitivity ofTcto the state of shear stress. This implies thatTc(P) for Pb is unsuitable as a manometer. The possibility that the hcp phase, occurring above about 14 GPa, may be useful as a manometer is discussed, but a definite conclusion cannot be reached at the present time.
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