Crystallographic and physical properties of new ternary R2T3X9 (R=La, Ce, U, T=Rh, Ir, X=Al, Ga) compounds

Crystal structure and properties of U2Co3Al9

“…To the best of our knowledge, the magnetic and transport properties have been reported only for some An 2 T 3 M 9 (An ¼ U) systems, namely U 2 T 3 M 9 (T ¼ Rh, Ir; M ¼ Al, Ga) [2] and An 2 Rh 3 Ga 9 (An ¼ U, Th) [3]. Except for Th 2 Rh 3 Ga 9 , all of these compounds undergo magnetic ordering at low temperatures.…”

“…Except for Th 2 Rh 3 Ga 9 , all of these compounds undergo magnetic ordering at low temperatures. For example, U 2 Rh 3 Al 9 , U 2 Ir 3 Al 9 , U 2 Rh 3 Ga 9 , and U 2 Ir 3 Ga 9 are antiferromagnetic with T N ¼ 35, 15, 13, and 7.5 K, respectively [2]. U 2 Rh 3 Ga 9 exhibits Kondo-like behaviour with T K ¼ 5.3 K [3].…”

Crystal Structure and Physical Properties of New Ternary Gallides Eu2Rh3Ga9 and Eu2Ir3Ga9

“…Ternary phases Sc 2 Co 3 Ga 9 , Sc 2 Co 3 Al 9 , Zr 2 Co 3 Al 9 and Hf 2 Co 3 Al 9 [23] also should be mentioned as isotypic. Increased interest in the cerium and ytterbium as well as in the uranium compounds (U 2 Ir 3 Al 9 [18], U 2 T 3 M 9 , T = Rh, Ir, M = Al, Ga [13]) is motivated by various magnetic, electrical and transport properties, like intermediate valence, a variety of magnetic ordering phenomena, strong Kondo interactions etc. Similar peculiarities can be expected for respective europium compounds.…”

Magnetic, transport, and thermal properties ofYb2T3X9Trovarelli1, Geibel2, Buschinger3 et al. 1999Phys. Rev. BSelf Cite341270View full textAdd to dashboardCite

“…Despite this orthorhombic structure ͑space group Cmcm) has a relatively large number of atoms per unit cell, it is an ordered structure with only one equivalent crystallographic site for the R component. Very recently, Buschinger et al [7][8][9] investigated the low-temperature properties of a number of R 2 T 3 X 9 compounds formed with R ϭLa, Ce, and U, in combination with TϭRh, Ir and XϭAl, Ga. The four studied Ce-based compounds are nonmagnetic and present rather unusual GS properties.…”