The total thermal contraction of UHV materials commonly used in the construction of scanning tunneling and scanning force microscopes has been measured at 195, 77, and 4.2 K. The measurements were made with a simple push‐rod dilatometer whose accuracy was checked against the known thermal contraction of 304 stainless steel. The results of the measurements indicate that the total thermal contractions of Macor machinable ceramic and the lead–zirconate–titanate piezoceramic PZT‐5A are closely matched and similar to the contractions of titanium and tantalum. The total thermal contraction of Torr Seal UHV compatible epoxy is substantially larger and is similar to that of other filled epoxies.
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© 1995 American Vacuum Society.
1995
American Vacuum Society
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