Abstract
A new intermetallic compound with a high content of cerium, Ce13Ru2Sn5, was found during the systematic investigation of the Ce–Ru–Sn ternary system. The crystal structure has been studied by a single crystal X-ray diffraction experiment and was found to be a new structure type of the intermetallic compounds: space group I4/mcm, the lattice parameters a=22.8999(2)Å, c=9.1668(1)Å, Z=8. Ce13Ru2Sn5 structure is characterized by eight independent crystallographic Ce sites and some shortened Ce–Ru contacts: dCe1–Ru1=2.7693(3)Å, dCe2–Ru1=2.7925(12)Å and dCe3–Ru1=2.7612(12)Å. The low temperature measurements of electrical resistivity and magnetization of Ce13Ru2Sn5 reveal the complex behavior of the magnetoresistance occurring below 20K but with an additional positive component below 7.5K. This behavior is discussed in light of the magnetic measurements showing two transitions at ∼16K and ∼6K together with hysteretic loops in the M(H) below 20K.
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