Title :
Fabrication and properties of YBa/sub 2/Cu/sub 3/O/sub 7//RE/sub 1-x/MnO/sub 3-y/ multilayers
Author :
Przyslupski, P. ; Kolesnik, S. ; Dynowska, E. ; Skoskiewicz, T. ; Sawicki, M.
Author_Institution :
Inst. of Phys., Polish Acad. of Sci., Warsaw, Poland
fDate :
6/1/1997 12:00:00 AM
Abstract :
The high pressure d.c. sputtering method has been used to fabricate (YBa/sub 2/Cu/sub 3/O/sub 7//Nd/sub 0.67/Sr/sub 0.33/MnO/sub 3-y/)//sub n/ [(YBCO/NSMO)/sub n/] superlattices. X-ray analyses show c-axis epitaxial growth on LaAlO/sub 3/ (100) substrates. Nd/sub 0.67/Sr/sub 0.33/MnO/sub 3-y/ films are strained due to some difference in lattice parameters between substrate and YBCO sublayers. Magnetization measurements done on single NSMO films show ferromagnetic order below 200 K. Magnetic moment measured for the superlattices below superconducting transition show ferromagnetic order and superconductivity. Such a behavior indicates on the co-existence of superconductivity and ferromagnetism in the total volume of heterostructures, where superconductivity is related to the YBCO sublayer and ferromagnetism to the NSMO sublayer.
Keywords :
X-ray diffraction; barium compounds; ferromagnetic materials; high-temperature superconductors; lattice constants; magnetic thin films; rare earth compounds; sputtered coatings; superconducting superlattices; superconducting thin films; yttrium compounds; 200 K; X-ray analyses; YBa/sub 2/Cu/sub 3/O/sub 7//RE/sub 1-x/MnO/sub 3-y/ multilayers; c-axis epitaxial growth; high temperature superconductor; lattice parameters; magnetic moment; magnetization; sputtering; Fabrication; Magnetic films; Magnetic superlattices; Neodymium; Sputtering; Strontium; Substrates; Superconducting films; Superconductivity; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
