Texture and terahertz analysis of YBa2Cu3O7 grown onto LaAlO3 by the chemical solution deposition technique

Sanchez Cornejo H.; De Los Santos Valladares L.; Kamboj V.S.; Bustamante Dominguez A.; González J.C.; Osorio Anaya A.M.; Moreno N.O.; Beere H.E.; Ritchie D.A.; Newton P.J.; Barnes C.H.W. · Heat Treatment and Surface Engineering (2021) · DOI: 10.1080/25787616.2021.2022294

Resumen

We analyze in-plane and out-of-plane texture and terahertz analysis of a YBa2Cu3O7-δ (YBCO) film deposited by chemical solution deposition technique onto LaAlO3 (100) substrate. X-ray diffraction reveals the presence of (00l) reflections for the YBCO phase. The out-of-plane texture, measured by a rocking curve, shows two sub-layers with Δω = 0.45° and 1.8°. The value of the c-axis fraction of the crystallites is 81%. Also, the in-plane texture was studied by ϕ-scan measurements of the (102) reflection, displaying mostly a colony of c-axis oriented grains, and two colonies of a-axis oriented grains onto the YBCO surface. In addition, the temperature dependence of the magnetization measurement revealed a critical temperature of 90 K, typical for YBCO superconductor material. From the temperature-dependent optical conductivity of YBCO, we observe an absorption feature at ≈1.57 THz, which redshifts with increasing temperature.

Instituciones: Universidad Nacional Mayor de San Marcos