Superconductivity in YxYBa2-xCu4O8±δ system

YBa2Cu4O8+/-delta and YxYBa2-xCu4O8+/-delta (x=0.05-0.2) systems were synthesized using co-precipitation and ceramic methods. Dependence of parameters and kinds of lattice symmetry of YxYBa2-xCu4O8+/-delta from the displacement degree x was studied. At research of electric conductivity of samples Yx...

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Veröffentlicht in:	Physica. C, Superconductivity Superconductivity, 2007-09, Vol.460-462 (2), p.722-723
Hauptverfasser:	LEVYTSKA, Kateryna E, VOITENKO, Tetiana A, NEDILKO, Sergiy A
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Cuprates superconductors (high tc and insulating parent compounds) Effects of material synthesis, crystal structure, and chemical composition Exact sciences and technology Physics Superconductivity Transition temperature variations Y-based cuprates
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Beschreibung
Zusammenfassung:	YBa2Cu4O8+/-delta and YxYBa2-xCu4O8+/-delta (x=0.05-0.2) systems were synthesized using co-precipitation and ceramic methods. Dependence of parameters and kinds of lattice symmetry of YxYBa2-xCu4O8+/-delta from the displacement degree x was studied. At research of electric conductivity of samples YxYBa2-xCu4O8+/-delta (x=0.05-0.2) it is positioned, that all samples pass in a superconducting condition at temperatures above 77K.
ISSN:	0921-4534 1873-2143
DOI:	10.1016/j.physc.2007.03.151