6 Result(s)
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Chapter
Ductile, High Heat Capacity, Magnetic Regenerator Alloys for the 10 to 80 K Temperature Range
New erbium-based regenerator materials have been developed as a replacement for lead in low temperature cryocoolers. These alloys have volumetric heat capacities which are 20 to 185% larger than that of lead f...
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Chapter
Manufacturing Considerations for Rare Earth Powders Used in Cryocooler and Magnetic Refrigerator Applications
The high chemical reactivity and oxygen affinity of the rare earth metals make them especially difficult to produce and maintain as high purity powders. From the initial oxide reduction through bulk melt prepa...
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Chapter
New Regenerator Materials for Use in Pulse Tube Coolers
A two-stage pulse tube cooler driven by a linear compressor is being developed to provide cooling at 20 K. The first stage of the cooler will have the conventional stainless steel screen regenerator matrix. Th...
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Chapter
Magnetothermal Properties of Polycrystalline Gd2In
The magnetic, thermodynamic and magnetocaloric properties of Gd2In have been investigated as a part of a continuing study of novel lanthanide-based materials in order to improve our knowledge about the nature of ...
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Chapter
Low Temperature Cryocooler Regenerator Materials
There are four importantfactorswhich influence the magnitude of the magnetic heat capacity near the magnetic ordering transition temperature. These include the theoretical magnetic entropy, the deGennes factor...
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Chapter and Conference Paper
Development of New Cryocooler Regenerator Materials — Ductile Intermetallic Compounds
The volumetric heat capacities of a number of binary and ternary Er- and Tm-based intermetallic compounds, which exhibited substantial ductilities, were measured from ∼3 to ∼350 K. They have the RM stoichiomet...
