Accession Number : ADA303740

Title :   Magnetic Behavior of New Ce-Pd-Sn Ternary Compounds.

Descriptive Note : Technical rept.,

Corporate Author : CORNELL UNIV ITHACA NY DEPT OF CHEMISTRY

Personal Author(s) : Gordon, R. A. ; DiSalvo, F. J.

PDF Url : ADA303740

Report Date : 12 JAN 1996

Pagination or Media Count : 34

Abstract : We have prepared and measured the magnetic susceptibility of several new ternary compounds in the Ce-Pd-Sn system: CePd0.5Sn2, Ce8Pd24Sn, 'Ce4Pd7Sn4' and the solid solution based on Ce2Pd2Sn. In CePd0.5Sn2, an effective magnetic moment of 2.6O(3)uB is observed but no ordering is apparent above 4.2K. Complete nickel substitution for Pd in Ce(Pd(1-x)Nix)O.5Sn2 results in the known lower limit to the CeNi(1-x)Sn2 solid solution. We have determined the extent of the solid solution base on Ce2Pd2Sn to have the form Ce4Pd(4+2x)Sn(2-x-y) in a roughly triangular region with limits of x=O, y=O; x=O, y=2/3 and x=2/3, y=O. Magnetic behavior consistent with tri-valent cerium moments is observed at these limits with ferromagnetic ordering present for x=O, y=2/3. Cubic Ce8Pd24Sn has an effective high temperature moment of 2.49(4)uB and anti-ferromagnetic ordering at 7.5K. A hexagonal phase dominates the composition 'Ce4Pd7Sn4', but a structural solution has remained elusive. An effective cerium moment of 2.53(4)B is observed in 'Ce4Pd7Sn411' with a Weiss constant of -23K, suggesting antiferromagnetic interactions, but no ordering is observed above 4.2K. (AN)

Descriptors :   *TERNARY COMPOUNDS, *CERIUM COMPOUNDS, CRYSTAL STRUCTURE, SOLUTIONS(MIXTURES), HIGH TEMPERATURE, PHASE STUDIES, CHEMICAL COMPOSITION, DIFFRACTION, VALENCE, NICKEL, TIN COMPOUNDS, TANTALUM, SOLID SOLUTIONS, FERROMAGNETISM, ELECTROMAGNETIC SUSCEPTIBILITY, ATOMIC STRUCTURE, INTERMETALLIC COMPOUNDS, ANTIFERROMAGNETISM, MAGNETIC MOMENTS, CERIUM ALLOYS, PALLADIUM COMPOUNDS.

Subject Categories : Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE