BaFe2As2/Fe bilayers with [001]-tilt grain boundary on MgO and SrTiO3 bicrystal substrates
Kazumasa Iida, Silvia Haindl, Fritz Kurth, Jens Haenisch, Ludwig, Schulz, Bernhard Holzapfel
TL;DR
This study demonstrates the growth of high-quality Co-doped BaFe2As2 superconducting films on MgO and SrTiO3 bicrystal substrates with [001]-tilt grain boundaries, using Fe buffer layers and an additional MgAl2O4 buffer for SrTiO3.
Contribution
It introduces a method to grow epitaxial BaFe2As2 films on bicrystal substrates with grain boundaries, including the use of buffer layers for SrTiO3.
Findings
Successful growth of crystalline BaFe2As2 on both substrates.
Use of MgAl2O4 buffer improves film quality on SrTiO3.
High crystalline quality of the bicrystal films achieved.
Abstract
Co-doped BaFe2As2 (Ba-122) can be realized on both MgO and SrTiO3 bicrystal substrates with [001]-tilt grain boundary by employing Fe buffer layers. However, an additional spinel (i.e. MgAl2O4) buffer between Fe and SrTiO3 is necessary since an epitaxial, smooth surface of Fe layer can not be grown on bare SrTiO3. Both types of bicrystal films show good crystalline quality.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.