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SUMMARY:IMX Talks - Tailored magnetic garnet films with engineered magn
 etization for spin-wave and magneto-optical applications
DTSTART:20260318T110000
DTEND:20260318T120000
DTSTAMP:20260430T144156Z
UID:6fecd612eb791e5c0b10f1135b27aa8a45a95e68543a1b2d015db3f7
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Taichi Goto\, Research Institute of Electrical Communic
 ations\, Tohoku University Japan\nWe present a series of studies on magne
 tic garnet films with tailored microstructures and engineered magnetizatio
 n\, targeting spin-wave and magneto-optical device applications. First\, t
 wo-dimensional magnonic crystals are demonstrated using yttrium iron garne
 t (YIG) films with copper (Cu) patterning\, which effectively suppresses t
 he spatial distribution of shape magnetic anisotropy inherent to patterned
  structures\, enabling spin-wave waveguides with well-defined propagation 
 characteristics. Second\, multilayer epitaxial single-crystal magnetic gar
 net films fabricated by ion beam sputtering yield perpendicular magnetic a
 nisotropy domain structures with characteristic lengths from the nanometer
  to micrometer scale\, which are exploited as magneto-optical lenses for b
 eam-shaping and holographic applications. Third\, toward on-chip photonic 
 integration\, optical isolators compatible with integrated optical circuit
 s are developed alongside a laser annealing process that enables local cry
 stallization of garnet films on non-garnet substrates\, circumventing ther
 mal budget constraints and opening a route to silicon-compatible magneto-o
 ptical isolation. These results collectively illustrate how deliberate pro
 cessing and magnetization engineering of garnet films can address key chal
 lenges in both magnonics and integrated photonics.\n\nBio: Taichi Goto re
 ceived the M.S. degree in Electrical and Electronic Engineering and the Ph
 .D. degree from the Graduate School of Engineering\, Toyohashi University 
 of Technology\, Japan\, in 2009 and 2011\, respectively.\nHe was a JSPS Re
 search Fellow (DC1 and PD)\, including an overseas fellowship. From 2011 t
 o 2013\, he was a Postdoctoral Associate with the Massachusetts Institute 
 of Technology (MIT)\, Cambridge\, MA\, USA. From 2013 to 2022\, he was an 
 Assistant Professor with Toyohashi University of Technology. He was also a
  JST PRESTO Researcher from 2015 to 2019\, and a Visiting Researcher with 
 MIT from 2016 to 2020.\nSince 2022\, he has been an Associate Professor wi
 th the Research Institute of Electrical Communication\, Tohoku University\
 , Sendai\, Japan. He also holds the titles of Tohoku University Distinguis
 hed Researcher and TI-FRIS Fellow at the Frontier Research Institute for I
 nterdisciplinary Sciences.\nHe has authored more than 70 peer-reviewed jou
 rnal articles\, filed 21 patents\, and delivered numerous invited talks at
  international conferences. His work on functional microdevices based on m
 agnetic interference was recognized with the Young Scientists' Prize from 
 the Commendation for Science and Technology by the Minister of Education\,
  Culture\, Sports\, Science and Technology (MEXT)\, Japan\, in 2019. His r
 esearch interests include spin-wave devices\, magneto-optical devices\, an
 d the development of related magnetic and photonic materials.\nHe is a mem
 ber of the Institute of Electrical and Electronics Engineers (IEEE)\, the 
 Materials Research Society (MRS)\, the Magnetics Society of Japan\, the In
 stitute of Electrical Engineers of Japan (IEEJ)\, and the Japan Laser Soci
 ety.\n 
LOCATION:BM 3241 https://plan.epfl.ch/?room==BM%203241
STATUS:CONFIRMED
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