Dresden 2014 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 55: Poster II
MA 55.94: Poster
Freitag, 4. April 2014, 10:30–13:30, P2
Double Perovskite La2CoMnO6 thin films grown by Metalorganic Aerosol Deposition (MAD) — •Sebastian Hühn1, Markus Jungbauer1, Sebastian Merten1, Ricardo Egoavil2, Jo Verbeeck2, and Vasily Moshnyaga1 — 1I. Physikalisches Institut, Georg-August-Universität, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany — 2Electron Microscopy for Materials Science (EMAT) , Groenenborglaan 171, 2020 Antwerp, Belgium
Some ordered double perovskites (DP) with the general formula A2BB′O6 exhibit halfmetallic-ferrimagnetic behavior with high Curie temperature TC > 400 K and 100% spin polarization [1]. Therefore these DP are interesting for room-temperature applications. High B-site ordering is a prerequisite for full saturation magnetization and high TC. As a proof of concept we show that it is possible to grow highly ordered La2CoMnO6 thin films on SrTiO3 (111) by metalorganic aerosol deposition [2], a chemical deposition technique in ambient atmosphere. B-site ordering is confirmed by XRD, TEM-EELS and Raman spectroscopy. The saturation magnetization of Msat=6 µ B/f.u. and Curie point of TC= 230 K agree with the values of highly ordered bulk samples. Financial support from EU FP 7, IFOX (interfacing oxides) project is acknowledged.
[1] Serrate, De Teresa and Ibarra J. Phys.: Condens. Matter 19 (2007) 023201
[2] Moshnyaga et.al. Appl. Phys. Lett. 74, 2842 (1999)