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SUMMARY:BiFeO3 for electronics\, magnonics\, photonics and beyond
DTSTART:20170302T083000
DTEND:20170302T093000
DTSTAMP:20260511T080110Z
UID:f1c83bbe4e1e6ab48f2b3eb9e984e24c0f160d48a296b587fe8da0bc
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Manuel Bibes\, Unité Mixte de Physique CNRS/Thales\, Palai
 seau FRANCE\nBiFeO3 is a one of the very few room-temperature multiferroic
  materials [1]. Its rediscovery fourteen years ago was initially motivated
  by a possible application in electric-field controlled spintronics device
 s. Other important properties of BiFeO3 are its remarkable spontaneous pol
 arization of 100 µC/cm² in the <111> pseudocubic direction\, high Curie 
 temperature of 1100 K and cycloidal spin order in the bulk. In addition\, 
 BiFeO3 possesses interesting optical characteristics\, such as a band gap 
 in the visible range (2.7 eV) and a large birefringence.\n\nIn this talk\,
  I will first describe how BiFeO3's structural\, ferroelectric\, magnetic 
 and optical properties can be tuned by epitaxial strain\, thereby unveilin
 g novel functionalities of interest for applications in various fields. I 
 will then focus on the electric-field control of magnetism\, in micronic d
 evices and at the nanoscale. Finally\, I will show how BiFeO3 can be integ
 rated as a barrier in ferroelectric tunnel junctions showing a memristive 
 response [3]\, with potential for neuromorphic computational architectures
  [4].\n[1]            D. Sando\, A. Barthélémy\, and M. Bibes
 \, J. Phys. Condens. Matter 26\, 473201 (2014).\n[2]           
  D. Sando et al\, Nature Mater. 12\, 641 (2013).\n[3]          
   A. Chanthbouala et al\, Nature Mater. 11\, 860 (2012).\n[9]      
       S. Boyn et al\, Nature Commun. (in press)\n\nBio:\nManuel Bibes
  (Sainte-Foy-la-Grande\, France\, 1976) is a CNRS Research Director at the
  CNRS/Thales laboratory in Palaiseau\, France. After graduating as an Engi
 neer in Materials Physics (INSA Toulouse\, 1998)\, he obtained a double Ph
 D degree in France and Spain with a thesis on manganite interfaces supervi
 sed by J. Fontcuberta (ICMAB Barcelona\, 2001). Following two years of pos
 tdoctoral work on oxide spintronics with A. Fert in Orsay he became a CNRS
  Researcher in 2003. As an independent researcher\, Bibes then pioneered r
 esearch lines on multiferroics and oxide-based spin-filter junctions and i
 n 2009\, he led the discovery of giant electroresistance in ferroelectric 
 tunnel junctions and patented their use as ferroelectric memristors. He al
 so explored novel routes for the electrical control of magnetism and spin 
 transport in hybrid oxide-metal architectures. Bibes is the recipient of t
 he 2013 EU40 Materials Prize of the E-MRS\, an APS Fellow\, and the laurea
 te of a European Research Council grant to design novel states of matter t
 hrough electronic correlations. He has coauthored more than 150 articles i
 n international journals totalizing around 10000 citations\, filed 7 paten
 ts and given over 140 invited talks at conferences and research institutes
 .
LOCATION:MED 2 1124 (Coviz2) http://plan.epfl.ch/?lang=fr&room=MED21124
STATUS:CONFIRMED
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