title: Two-dimensional magnetic correlations and partial long-range order in geometrically frustrated Sr2YRuO6.
abstract: Neutron diffraction on the double perovskite Sr(2)YRuO(6) with a quasi-fcc lattice of Ru moments reveals planar magnetic correlations that condense into a partial long-range ordered state with coupled alternate antiferromagnetic (AFM) YRuO(4) square layers coexisting with the short-range correlations below T(N1) = 32 K. A second transition to a fully ordered AFM state below T(N2) = 24 K is observed. The reduced dimensionality of the spin correlations is arguably due to a cancellation of the magnetic coupling between consecutive AFM square layers in fcc antiferromagnets, which is the simplest three-dimensional frustrated magnet model system.
authors: Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Campinas, São Paulo 13083-859, Brazil. egranado@ifi.unicamp.br
authors: E
authors: E
authors: Granado
authors: J W
authors: JW
authors: Lynn
authors: R F
authors: RF
authors: Jardim
authors: M S
authors: MS
authors: Torikachvili