Crystal Structures and Magnetic Properties of 6H-Perovskites Ba3MRu2O9 (M=Y, In, La, Sm, Eu, and Lu)

Ba3YRu0.73(2)Al1.27(2)O8 and Ba5Y2Ru1.52(2)Al1.47(2)O13.5: New Perovskite Ruthenates with Partial Octahedra Replacement

“…(Jagodinski notation hcc) of close-packed layers of oxygen and barium ions leads to layers of octahedra which share all vertices with pairs of octahedra formed by face-sharing. In accordance with a number of well known 6H perovskite ruthenates with general composition Ba 3 MRu 2 O 9 (M = Li, Na, Mg, Ca, In, and a large variety of 3d metals and rare earth metals) [1] and particularly the compound Ba 3 YRu 2 O 9 [11], the pairs of octahedra were initially occupied by Ru and the additional octahedra by Y. The refinement cycles indicated less electron density within the pairs of octahedra, and indeed this site was found to be mixed occupied by Ru and Al in the following cycles.…”

“…The measurements of intensity data were carried out at 295 K on a four-circle diffractometer Rigaku AFC-7, equipped with a Mercury CCDdetector (scan mode ϕ/ω, ∆ = 0. [11]). Occupational factors of the metal atom sites were chosen as described in the discussion section.…”

Magnetic Studies of EuBa2Cu3-xRuxO7-δCompounds

“…non-superconducting Ba 3 EuRu 2 O 9 phase with interesting magnetic properties [10]. C in owing oxygen and, in addition, in our samples, the Ba 3 EuRu 2 O 9 phase is included in superconducting matrix unlike the single phase samples studied in [10].…”

Effects of Ru Addition on the Superconducting Properties of the Eu-123 System

“…The phase could be identied as the non-metal, non-superconducting Ba 3 EuRu 2 O 9 phase with interesting magnetic properties [4]. The results of the magnetization vs. the applied magnetic eld dependences in Fig .…”