FACTORS INFLUENCING SOLID SOLUBILITIES OF RARE-EARTHS IN Pd
FACTORS INFLUENCING SOLID SOLUBILITIES OFRARE-EARTHS IN Pd

1.IntroductionInmostmetalsolvents,therare-earths(RE)areinsolubleorhavequitesmallsolidsolubilities.EveninsolventslikeAgandAu,themaximumsolidsolubilitiesofheavyrare-earthsarelessthan1oat.%,whichhavealreadybeenreviewedinRefs.1-3].ThesoIidsolubilitiesofrare-earthsinPd,however,aregenerallylargerthan1Oat.%exceptafewlightrare-earthssuchasLaandNdwhichhavequitesmallvalues.Althoughthealloyingbehaviorofpalladiumwithrare-earthswasdiscussedbasedontheatomicsizeeffectl4],thespecialityforthesolidsolubili…