Characterization of surface and interface structure of YBa2Cu3O7−δ-based trilayer with La0.67Ca0.33MnO3 spacer

Abstract

Thin YBa2Cu3O7−δ∕La0.67Ca0.33MnO3∕YBa2Cu3O7−δ (YBCO/LCMO/YBCO) trilayers on (001)-oriented SrTiO3 (STO) substrates were fabricated by magnetron sputtering technique. The trilayers are well c-axis oriented confirmed by x-ray diffraction. The surface and interface structure of the trilayers were investigated by grazing incident x-ray reflectivity. The results showed that there exists diffusion at the YBCO/LCMO interfaces with the diffusion length of several nanometers. The root-mean-square (rms) roughness of surface and interface in the trilayers varied with the thickness of YBCO layer. The rms roughness of surface was consistent with observation by atomic force microscopy. A further analysis indicated that the rms roughness was correlative to the misfit strain relaxation in film.

Artificial pinning center technology to enhance vortex pinning in YBCO coated conductors

“…YBCO/EuBCO [87], YBCO/ NdBCO [88], Y 2 BaCuO 5 (Y-211)/YBCO [89], YBCO/ YSZ [90], SrRuO 3 /YBCO [91], YBCO + BaZrO 3 /CeO 2 [92], YBCO/BaZrO 3 [93], YBCO/SrTiO 3 [94], YBCO/LaCaMnO 3 [95], Sm 1.04 Ba 1.96 Cu 3 O y /Sm 1.08 Ba 1.92 Cu 3 O y [96], and so on. The general common effect of the multilayer approach is an enhancement of J c in a magnetic field, sometimes combined with weak c-axis correlated pinning.…”

Effective-field theory of the Ising model with three alternative layers on the honeycomb and square lattices

“…On the other hand, a considerable research interest has been devoted to study the physical properties of the trilayer systems both experimentally and theoretically in recent years. For example, NiFe/NiO/Co [1], Co/M/Fe 3 O 4 [2], NiFe/Cu/IrMn [3], Co/Ge/Co [4], Au/FePt/Au [5], LaBiMnO 3 /MgO/Co [6], Fe/Cr/Fe [7], NiFe/Bi/ NiFe [8], Co/Nb/Fe [9], Ni/Cu/Co [10], Co/Nb/Co [11], FeCo/Au/FeCo [12], NiFe/NB/ NiFe [13], Fe/MgO/Fe [14], Fe/Al/Fe [15], Pt/Co/Pt [16], FePt/Pt/Cr [17], YBCO/LCMO/YBCO [18], NiFe/FeMn/NiFe [19] have been studied experimentally. One can cite many more experimental works on trilayer systems.…”