YBa2Cu3O7-δ Thin Film Growth on Different Substrates by Pulsed Laser Deposition

Year 2017, Volume: 3 Issue: 2, 1 - 7, 30.11.2017

M. Tolga Yurtcan , Önder Şimşek Özkan Bayram , Mehmet Ertuğrul

Abstract

There were a lot of research on YBa₂Cu₃O_7-δ
(YBCO) superconducting materials and this material still draw
attention.  In this research, thin films
of commonly used superconducting YBCO ceramic material, grown on LaAlO₃
(LAO), MgO and SrTiO₃ (STO) substrates as thin films, which have
different thermal expansion constants and lattice parameters, by Pulsed Laser
Deposition (PLD) technique. For all growths, 150 mTorr partial Oxygen pressure,
5 cm substrate-target distance and 800 °C substrate temperature were used. Thin
films were characterized for film quality and microstructure with X-Ray
Diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy
(EDS) techniques. Analysis of these thin films showed that mainly c oriented (00l) YBCO thin films obtained with LAO and STO substrates which
are more compatible than MgO substrates for YBCO growth.

Keywords

YBa2Cu3O7-δ, YBCO, LaAlO3, MgO, SrTiO3, Pulsed Laser Deposition, superconductivity, PLD

References

• Prof.Dr.Ali Ercan EKİNCİ