Abstract
Experiments have been performed from magnetic temperatures of 2–20 mK on the effect of minute4He impurities and a magnetic field on the thermal resistance between powdered cerium magnesium nitrate (CMN) and liquid3He. The thermal resistance decreases with decreasingT and increasing small field but is increased dramatically at a givenT by the addition of roughly a monolayer of4He. The resistance is interpreted as resulting from a surface magnetic coupling between CMN and liquid3He.
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This work has been supported by the U.S. Atomic Energy Commission under Contract No. AT(04-3)-34, P.A. 143, and by the Air Force Office of Scientific Research, Office of Aerospace Research, United States Air Force, under Grant No. AF-AFOSR-631-67A.
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Black, W.C., Mota, A.C., Wheatley, J.C. et al. Thermal resistance between powdered cerium magnesium nitrate and liquid helium at very low temperatures. J Low Temp Phys 4, 391–400 (1971). https://doi.org/10.1007/BF00628739
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DOI: https://doi.org/10.1007/BF00628739