Island growth and surface topography of epitaxial Y-Ba-Cu-O thin films on MgO

High-quality epitaxial Y1B2Cu3Ox thin films (Tc,o ≥ (R18) 90 K, jc (77 K)≥ (R18)3 ×106A/cm2) were in situ grown on MgO by KrF excimer laser ablation. The combination of in situ resistance measurements, x-ray diffraction experiments, Tc measurements, scanning electron microscopy and scanning tunnelin...

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Veröffentlicht in:	Applied physics letters 1991-10, Vol.59 (17), p.2180-2182
Hauptverfasser:	KREBS, H. U, KRAUNS, C, XIAOGUANG YANG, GEYER, U
Format:	Artikel
Sprache:	eng
Schlagworte:	360204 > Ceramics, Cermets, & Refractories-- Physical Properties ABLATION ALKALINE EARTH METAL COMPOUNDS BARIUM COMPOUNDS BARIUM OXIDES CHALCOGENIDES COHERENT SCATTERING COPPER COMPOUNDS COPPER OXIDES CRYSTAL STRUCTURE DIFFRACTION HIGH-TC SUPERCONDUCTORS MATERIALS SCIENCE MICROSTRUCTURE OXIDES OXYGEN COMPOUNDS PHYSICAL PROPERTIES SCATTERING SUPERCONDUCTING FILMS SUPERCONDUCTORS THERMODYNAMIC PROPERTIES TRANSITION ELEMENT COMPOUNDS TRANSITION TEMPERATURE X-RAY DIFFRACTION YTTRIUM COMPOUNDS 360202 > Ceramics, Cermets, & Refractories-- Structure & Phase Studies YTTRIUM OXIDES
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Zusammenfassung:	High-quality epitaxial Y1B2Cu3Ox thin films (Tc,o ≥ (R18) 90 K, jc (77 K)≥ (R18)3 ×106A/cm2) were in situ grown on MgO by KrF excimer laser ablation. The combination of in situ resistance measurements, x-ray diffraction experiments, Tc measurements, scanning electron microscopy and scanning tunneling microscopy gives clear indications for an island growth on these substrates and shows growth steps and spirals at the film surface.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.106066