Abstract 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, crystalline electric field, and the RKKY (Ruderman-Kittel-Kasuya-Yosida) interaction. The lattice contribution to the heat capacity also needs to be considered since it is the sum of the lattice and magnetic contributions which give rise to the heat capacity maxima. The lattice heat capacity depends on the chemical composition, crystal structure and temperature. As a result, one can obtain large changes in the heat capacity maxima by alloying. Several ternary intermetallic systems have been examined in light of these criteria. A number of deviations from the expected behaviors have been found and are discussed.
Low Temperature Cryocooler Regenerator Materials
Cryocoolers 12 ; 457-465
2003-01-01
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Low Temperature Cryocooler Regenerator Materials
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