Growth of in-plane textured LuNi₂B₂C thin films: correlation among structural, morphological and electrical properties

Authors: Grassano G.¹; Marr D.¹; Pallecchi I.¹; Ricci F.²; Siri A.S.¹; Ferdeghini C.¹

Source: Superconductor Science and Technology, Volume 14, Number 3, 2001 , pp. 117-123(7)

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Abstract:

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="$T_c=16.4$"] T_c = 16.4 [/iopmath] K, [iopmath latex="$\Delta T_c=0.3$"] T_c = 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.

Language: English

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