Novel ternary compound Ce4Pt9Al13: Crystal structure, physical properties

Ternary Aluminides of a New Homologous Series—CePt2Al2 and CePt3Al3: Crystal Structures and Thermal Properties

“…The crystal structures analyzed consist of three-dimensional networks of Pt and Al forming Ce-centered hexagonal prisms of alternating Pt and Al atoms at the vertices, which were also observed in the structures of cerium platinum aluminides with high Al content: CePtAl 3 [35], CePt 3 Al 5 [36], Ce 4 Pt 9 Al 13 [37], and Ce 2 Pt 9 Al 16 [38] (Figure 9). In these structures, one of the unit cell parameters is about 4.2 Å, which corresponds to the height of the Ce-hexagonal prism.…”

“…Cerium platinum aluminum intermetallics CePt 2 Al 2 and CePt 3 Al 3 present a new homologous series CePt n Al n with n = 2, 3, derived from the orthorhombic CePt 2 Al 2 and distorted CsCl type. Preliminary data on the crystal structures of the orthorhombic CePt 2 Al 2 and CePt 3 Al 3 have been presented at conferences [24,25]. Herein, we report on two structural modifications of CePt 2 Al 2 , tetragonal and orthorhombic, the structural phase transition between them as well as the crystal structure of CePt 3 Al 3 and peculiarities of the homologous series CePt n Al n (n = 2, 3).…”