Distrontium ruthenate

Distrontium ruthenate
	; 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
CAS Number	60862-59-1 ;
3D model (JSmol)	Interactive image;
	InChI InChI=1S/4O.Ru.2Sr/q4-1;+4;2+2 Key: KWNWXODLYNPAJR-UHFFFAOYSA-N;
	SMILES [Sr+2].[Sr+2].[O-][Ru]([O-])([O-])[O-];
Properties
Chemical formula	Sr2RuO4
Structure
Crystal structure	K2NiF4 structure (body-centered tetragonal)
Lattice constant	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). Infobox references

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]

^ Lichtenberg, F.; Catana, A.; Mannhart, J.; Schlom, D. G. (1992-03-02). "Sr₂RuO₄: A metallic substrate for the epitaxial growth of YBa₂Cu₃O_7−δ". Applied Physics Letters. 60 (9). AIP Publishing: 1138–1140. doi:10.1063/1.106432. ISSN 0003-6951.
^ 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.

[1] Lichtenberg, F.; Catana, A.; Mannhart, J.; Schlom, D. G. (1992-03-02). "Sr₂RuO₄: A metallic substrate for the epitaxial growth of YBa₂Cu₃O_7−δ". Applied Physics Letters. 60 (9). AIP Publishing: 1138–1140. doi:10.1063/1.106432. ISSN 0003-6951.

[Rev-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.

[1]

[2]

Identifiers
The unit cell of the layered perovskite structure of strontium ruthenate. Ruthenium ions are red, strontium ions are blue, and oxygen ions are green.
CAS Number	60862-59-1^Y
3D model (JSmol)	Interactive image
InChI InChI=1S/4O.Ru.2Sr/q4-1;+4;2+2 Key: KWNWXODLYNPAJR-UHFFFAOYSA-N
SMILES [Sr+2].[Sr+2].[O-][Ru]([O-])([O-])[O-]
Properties
Chemical formula	Sr₂RuO₄
Structure^[1]
Crystal structure	K₂NiF₄ structure (body-centered tetragonal)
Lattice constant	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). Infobox references