Istituto dei materiali per l'elettronica ed il magnetismo     
Martinelli A., Artini C., Cimberle R., Costa G., Ferretti M., Masini R., Mele P. Orthorhombic lattice deformation of GdSr2RuCu2O8 from high-resolution transmission electron microscopy and x-ray powder diffraction analysis. In: Physical Review B, vol. 69 (5) article n. 052507. The American Physical Society, 2004.
GdSr2RuCu2O8 has been synthesized using a solid state reaction and has been characterized from the structural and physical points of view. The samples exhibit the well-known superconducting and magnetic behavior; in addition, an orthorhombic modification of the GdSr2RuCu2O8 lattice has been detected by both high resolution transmission electron microscopy (HRTEM) and x-ray powder diffraction (XRPD) analysis. Rietveld refinement of the XRPD data has been successfully performed in the orthorhombic Pmmm space group yielding an a0b0c0(≈3a0) type cell, with octahedral RuO6 polyhedra slightly distorted and rotated around c, b, and a.
URL: http://link.aps.org/doi/10.1103/PhysRevB.69.052507
DOI: 10.1103/PhysRevB.69.052507
Subject 74.70.Pq

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