Growth of in-plane textured LuNi2B2C thin films: correlation among structural, morphological and electrical properties
Source: Superconductor Science and Technology, Volume 14, Number 3, 2001 , pp. 117-123(7)
Publisher: IOP Publishing
Thin films of the intermetallic superconducting compound LuNi2B2C have been prepared by pulsed laser ablation, and different deposition parameters (substrate temperature, target-substrate distance, laser beam energy density and thickness) have been the subject of extensive studies to optimize growth. The best samples show electrical properties similar to those of single crystals ( [iopmath latex="$T_c=16.4$"] Tc = 16.4 [/iopmath] K, [iopmath latex="$\Delta T_c=0.3$"] Tc = 0.3 [/iopmath] K, [iopmath latex="$RRR=13$"] RRR = 13 [/iopmath] ), are strongly c-axis-oriented, and present a high density of in-plane-oriented surface structures. This in-plane texturing is found only in films some thousands of ?ngstr?m thick, while if the thickness is reduced below 1000-1500 ? the samples are very flat, but there is no evidence of in-plane texturing.
Document Type: Miscellaneous
Affiliations: 1: INFM-Dipartimento di Fisica, Universit? di Genova, via Dodecaneso 33, 16146 Genova, Italy 2: INFM-Dipartimento di Scienze Fisiche, Universit? di Napoli `Federico II', Piazzale Tecchio 80, 80125 Napoli, Italy
Publication date: 2001-01-01