Abstract
We have investigated the superconducting and metallurgical properties of the ternary compounds RPd2Si2 and RRh2Si2 with R=Y, La, and Lu. All RPd2Si2 compounds and LaRh2Si2 were found to be type-I superconductors below 1 K. A detailed metallurgical analysis shows that segregation of second phases can easily mask the intrinsic (stoichiometric ratio 1:2:2) intermetallic-compound properties. Two sample-preparation techniques, viz., single crystals and off-stoichiometry, were utilized to establish where bulk superconductivity occurs. The type-I behavior of these compounds is explained with an analogous model as is used for the heavy-fermion superconductors CeCu2Si2 and URu2Si2.
Original language | English |
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Pages (from-to) | 4566-4570 |
Number of pages | 5 |
Journal | Physical Review B |
Volume | 34 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1 Jan 1986 |
Externally published | Yes |