The Heat Capacity Characteristics of Er3Ni Below 20 K

  • E. L. Hershberg
  • I. E. Anderson
  • M. G. Osborne
  • M. F. Hundley
  • J. L. Smith
Part of the An International Cryogenic Materials Conference Publication book series (ACRE, volume 40)


In this paper we present the results of a series of heat capacity measurements made on samples of Er3Ni from a number of sources. We also report the highest heat capacity peak yet observed for Er3Ni. Powders of Er3Ni, obtained from outside suppliers and also produced by the authors, were made by different methods, including centrifugal atomization, high pressure gas atomization, and salt bath fusion. Small sample calorimetry techniques were used to measure the heat capacity in the 4 K to 20 K region. One of the authors has fabricated a highly purified sample that displays a magnetic ordering peak in the 6 K to 10 K region that is much sharper than previously reported in the literature. Also, in this region, the heat capacity of recently obtained commercial powder was found to exceed the heat capacity of previously supplied powder from the same source. We provide a heat capacity data set for centrifugally atomized Er3Ni powder in the 4 K to 20 K region that can be used by cryocooler designers for analyzing this material’s potential performance in cryocooler equipment.


Heat Capacity Heat Capacity Measurement Heat Capacity Data Volumetric Heat Capacity Heat Leak 
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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • E. L. Hershberg
    • 1
  • I. E. Anderson
    • 2
  • M. G. Osborne
    • 2
  • M. F. Hundley
    • 3
  • J. L. Smith
    • 3
  1. 1.Superconductive Systems Group, Tektronix LaboratoriesTektronix, Inc.BeavertonUSA
  2. 2.Ames LaboratoryAmesUSA
  3. 3.Los Alamos National LaboratoryLos AlamosUSA

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