title: Yttrium Iron Garnet Thin Films with Very Low Damping Obtained by Recrystallization of Amorphous Material.
abstract: We have investigated recrystallization of amorphous Yttrium Iron Garnet (YIG) by annealing in oxygen atmosphere. Our findings show that well below the melting temperature the material transforms into a fully epitaxial layer with exceptional quality, both structural and magnetic. In ferromagnetic resonance (FMR) ultra low damping and extremely narrow linewidth can be observed. For a 56 nm thick layer a damping constant of α = (6.15 ± 1.50) · 10(-5) is found and the linewidth at 9.6 GHz is as small as 1.30 ± 0.05 Oe which are the lowest values for PLD grown thin films reported so far. Even for a 20 nm thick layer a damping constant of α = (7.35 ± 1.40) · 10(-5) is found which is the lowest value for ultrathin films published so far. The FMR linewidth in this case is 3.49 ± 0.10 Oe at 9.6 GHz. Our results not only present a method of depositing thin film YIG of unprecedented quality but also open up new options for the fabrication of thin film complex oxides or even other crystalline materials.
authors: Institut für Physik, Martin-Luther University Halle-Wittenberg, Halle, 06120, Germany.
authors: Christoph
authors: C
authors: Hauser
authors: Institut für Physik, Martin-Luther University Halle-Wittenberg, Halle, 06120, Germany.
authors: Tim
authors: T
authors: Richter
authors: Institut für Physik, Martin-Luther University Halle-Wittenberg, Halle, 06120, Germany.
authors: Nico
authors: N
authors: Homonnay
authors: Institut für Physik, Martin-Luther University Halle-Wittenberg, Halle, 06120, Germany.
authors: Christian
authors: C
authors: Eisenschmidt
authors: Institut für Physik, Martin-Luther University Halle-Wittenberg, Halle, 06120, Germany.
authors: Mohammad
authors: M
authors: Qaid
authors: Max-Planck-Institut für Mikrostrukturphysik, Halle, 06120, Germany.
authors: Hakan
authors: H
authors: Deniz
authors: Max-Planck-Institut für Mikrostrukturphysik, Halle, 06120, Germany.
authors: Dietrich
authors: D
authors: Hesse
authors: Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warszawa, Poland.
authors: Maciej
authors: M
authors: Sawicki
authors: Institut für Chemie, Martin-Luther University Halle-Wittenberg, Halle, 06120, Germany.
authors: Stefan G
authors: SG
authors: Ebbinghaus
authors: Institut für Physik, Martin-Luther University Halle-Wittenberg, Halle, 06120, Germany.|Interdisziplinäres Zentrum für Materialwissenschaften, Martin-Luther University Halle-Wittenberg, Nanotechnikum Weinberg, Halle, 06120, Germany.
authors: Georg
authors: G
authors: Schmidt