ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Magnetic properties D 9000Preparation, Crystal Structure and Magnetic Properties of Ruddlesden-Popper Phases La1.2Sr1.8Mn2-xRuxO7 (x: 0, 0.05, 0.1, 0.2, 0.5). -The title compounds are synthesized by solid state reactions of appropriate amounts of La2O3, SrCO3, Mn2O3, and RuO2 in several heating cycles. As revealed by powder XRD they crystallize in the tetragonal space group I4/mmm with Z = 2. Magnetization and ac susceptibility measurements indicate an increase of the ferromagnetic Curie temperature with increasing Ru content from 121 K for x = 0.05 to 160 K for x = 0.5. -(SCHUEPP*, B.; DOERR, K.; RUCK, K.; NENKOV, K.; MUELLER, K.-H.; KRABBES, G.; Solid State Sci. 7 (2005) 1, 17-23; Inst.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

9 . -The title compound is prepared from mixture a of Sm 2 O 3 , BaCO 3 , and CuO in the molar ratio 1:4:2 (1000°C, 112 h). As revealed by powder XRD, Sm2Ba4Cu2O9 crystallizes in the tetragonal space group P4n2 with Z = 2. The main structural feature is the Cu-O sub-structure with Cu coordinated by five oxygen atoms forming elongated pyramids. The CuO5-polyhedra share two corners leading to infinite [CuO 3 O 2/2 ] chains. The whole structure can be described as a [Sm 2 Cu 2 O 8 ] network with channels filled with [OBa 4 ] polyhedra. -(SCHUEPP*, B.; WENDE, C.; J. Alloys Compd. 361 (2003) 1-2, 71-76; Inst. Festkoerper-Werkstofforsch. Dresden, Tech. Univ.