Abstract
Large osmium dioxide (OsO 2) 1 1 It should be warned that the volatile osmium oxide is highly toxic and must be handled with extreme caution. single crystals with mirror-like prismatic facets have been successfully grown by the oscillating chemical vapor transport method. X-ray diffraction spectroscopy showed the tetragonal rutile structure and the lattice parameters were determined. The field emission energy dispersive X-ray analysis revealed the atomic ratio of Os to O to be about 1:2. The X-ray photoelectron spectra for both the Os 4f and O 1s core-level features exhibited strongly asymmetric line-shapes character. Temperature-dependent resistivity measurements indicated metallic character and a low room-temperature resistivity of ∼15 μΩ cm for the OsO 2 single crystals. The residual resistivity ratio was determined to be 50.
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