Distrontium ruthenate

Distrontium ruthenate
strontium ruthenate unit cell
The unit cell of the layered perovskite structure of strontium ruthenate. Ruthenium ions are red, strontium ions are blue, and oxygen ions are green.
Identifiers
3D model (JSmol)
  • InChI=1S/4O.Ru.2Sr/q4*-1;+4;2*+2
    Key: KWNWXODLYNPAJR-UHFFFAOYSA-N
  • [Sr+2].[Sr+2].[O-][Ru]([O-])([O-])[O-]
Properties
Sr2RuO4
Structure[1]
K2NiF4 structure (body-centered tetragonal)
a = 387 pm, c = 1274 pm
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Distrontium ruthenate, also known as strontium ruthenate, is an oxide of strontium and ruthenium with the chemical formula Sr2RuO4. It was the first reported perovskite superconductor that did not contain copper. Strontium ruthenate is structurally very similar to the high-temperature cuprate superconductors, and in particular, is almost identical to the lanthanum doped superconductor (La, Sr)2CuO4. However, the transition temperature for the superconducting phase transition is 0.93 K (about 1.5 K for the best sample), which is much lower than the corresponding value for cuprates.[2]

  1. ^ Lichtenberg, F.; Catana, A.; Mannhart, J.; Schlom, D. G. (1992-03-02). "Sr2RuO4: A metallic substrate for the epitaxial growth of YBa2Cu3O7−δ". Applied Physics Letters. 60 (9). AIP Publishing: 1138–1140. doi:10.1063/1.106432. ISSN 0003-6951.
  2. ^ Koster, Gertjan; Klein, Lior; Siemons, Wolter; Rijnders, Guus; Dodge, J. Steven; Eom, Chang-Beom; Blank, Dave H. A.; Beasley, Malcolm R. (2012). "Structure, Physical Properties, and Applications of SrRuO3 Thin Films". Reviews of Modern Physics. 84 (1): 253–298. Bibcode:2012RvMP...84..253K. doi:10.1103/RevModPhys.84.253.