PdMn and PdFe: New Materials for Temperature Measurement Near 2 K

B. J. Klemme, M. J. Adriaans, P. K. Day, D. A. Sergatskov, T. L. Aselage, R. V. Duncan

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


Interest in the critical dynamics of superfluid 4He in microgravity conditions has motivated the development of new high resolution thermometry technology for use in space experiments near 2 K. We have developed a magnetic thermometer using dilute magnetic alloys of Mn or Fe dissolved in a pure Pd matrix, similar to previous thermometers used at ultra-low temperatures. These metallic thermometers are easy to fabricate, chemically inert, and can have a low thermal resistance to the stage to be measured. Also, the Curie temperature can be varied by changing the concentration of Fe or Mn, making them available for use in a wide temperature range. The derivative of the magnetic susceptibility was measured for PdMn and PdFe between 1.5 K and 4 K using a SQUID magnetometer. These measurements, as well as preliminary noise and drift measurements, show them to have sub-nK resolution with a drift of less than 10-13 K/s.

Original languageEnglish
Pages (from-to)133-146
Number of pages14
JournalJournal of Low Temperature Physics
Issue number1-2
StatePublished - 1999


Dive into the research topics of 'PdMn and PdFe: New Materials for Temperature Measurement Near 2 K'. Together they form a unique fingerprint.

Cite this