Interdisziplinäres Zentrum für Materialwissenschaften
  Publikationen [suche]   
Organisation
Aktivitäten
Kontakt
Angebote für Studenten
Bereiche im
      Nanotechnikum
Martin-Luther-Universität
Interdisziplinäres Zentrum für Materialwissenschaften
Nanotechnikum Weinberg
Heinrich-Damerow-Str. 4,
D-06120 Halle, Germany
Tel.: +49 345 55 28471
Telefax:+49 345 55 27390 email: info@cmat.uni-halle.de
[Veröffentlichungen] [Graduierungsarbeiten] [Berichte] [Poster]
Abstracts

Christoph Hauser, Tim Richter, Nico Homonnay, Christian Eisenschmidt, Mohammad Qaid, Hakan Deniz, Dietrich Hesse, Maciej Sawicki, Stefan G. Ebbinghaus & Georg Schmidt
Yttrium Iron Garnet Thin Films with Very Low Damping Obtained by Recrystallization of Amorphous Material
Scientific Reports 6 (2016),

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 ??=?(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 ??=?(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.

DOI 10.1038/srep20827


Impressum Copyright © Center of Materials Science, Halle, Germany. All rights reserved.