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SUMMARY:Rare earth high performance magnets for energy applications: Deman
 d\, sustainability and the reality of alternatives
DTSTART:20181119T131500
DTEND:20181119T141500
DTSTAMP:20260406T064250Z
UID:a8ad8d8424609e48cc1f2a5a378bdd5e52d8029c7db488f9bd6b2cf7
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Oliver Gutfleisch\, TU Darmstadt Germany\nMagnetic mater
 ials are key components in energy technologies\, robotics\, sensors and in
 formation technology. Magnets are inseparable from our everyday life. “G
 reen” energy technologies such as wind turbines\, electro-mobility and s
 olid state cooling\, rely on high performance magnetic materials which hav
 e to be available in bulk quantities\, at low-cost and with tailored magne
 tic hysteresis.\nThe realisation of renewable energy technologies is gener
 ally linked to the sustainable availability of strategic metals such as th
 e group of rare earth elements (REE) namely Nd\, Gd\, Tb\, Dy\, transition
  metals such as Co\, Ga\, Ge\, In\, and the platinum group metals. Resourc
 e criticality is understood here as a concept to assess potentials and ris
 ks in using raw materials and their functionality in emerging technologies
 . Specifically\, the demand\, sustainability and the reality of alternativ
 es of rare earth elements will be discussed.\nThere is an ever-growing dem
 and for the benchmark high performance Nd-Fe-B magnets. The increase in e-
 mobility and wind energy and other smart magnet usages in the future has y
 et to have its impact on the rare earth market. No substitute is at hand f
 or the massive amounts of high-energy density magnets needed\; yet various
  concept of heavy rare earth free\, free rare earth and rare earth free ma
 gnets are being explored.\nGas-vapour compression technology for refrigera
 tion\, heating\, ventilation\, and air-conditioning has remained unchallen
 ged for more than 150 years. There is a huge demand for a smarter\, more f
 lexible and more efficient cooling technology. Magnetic refrigeration coul
 d be that alternative working without gas-based refrigerants. Energy spent
  for domestic cooling is expected to outreach that for heating worldwide o
 ver the course of the twenty-first century.\nI will address these differen
 t global trends and will attempt to scale bridge these challenges by discu
 ssing the modelling\, synthesis\, characterization\, and property evaluati
 on of novel magnetic materials considering their micromagnetic length scal
 es\, phase transition characteristics and hysteretic properties.\n[1] O. G
 utfleisch\, M. A. Willard\, E. Brück\, C. H. Chen\, S. G. Sankar\, and J.
  P. Liu\, Magnetic materials and devices for the 21st century: stronger\, 
 lighter\, and more energy efficient. Adv. Mater. 23 (2011) 82.\n[2] K.P. S
 kokov and O. Gutfleisch\, Heavy rare earth free\, free rare earth and rare
  earth free magnets - vision and reality\, Scripta Materialia View Point S
 et\, 154 (2018) 289-294.\n[3] T. Gottschall\, A. Gracia-Condal\, M. Fries\
 , A. Taubel\, L. Pfeuffer\, L. Manosa\, A. Planes\, K.P. Skokov\, O. Gutfl
 eisch\, A multicaloric cooling cycle that exploits thermal hysteresis\, Na
 ture Materials\, accepted.\n[4] M. Duerrschnabel\, M. Yi\, K. Uestuener\, 
 M. Liesegang\, M. Katter\, H.-J. Kleebe\, B. Xu\, O. Gutfleisch\, L. Molin
 a-Luna\, Atomic structure and domain wall pinning in samarium -cobalt base
 d permanent magnets\, Nature Communications 8:54 (2017).\n[5] J. Liu\, T. 
 Gottschall\, K.P. Skokov\, J.D. Moore\, O. Gutfleisch\, Giant magnetocalor
 ic effect driven by structural transition\, Nature Mat. 11 (2012) 620.\n\n
 Bio:\nProf. Oliver Gutfleisch is a full Professor (W3) for Functional Mate
 rials at TU Darmstadt and a scientific manager at Fraunhofer IWKS Material
 s Recycling and Resource Strategies. He studied Material Science at TU Ber
 lin\, did his PhD in Birmingham\, UK\, and was a group leader at Leibniz I
 nstitute IFW Dresden. 2012 he joined TU Darmstadt. His scientific interest
 s span from new permanent magnets for power applications to solid state en
 ergy efficient magnetic cooling\, ferromagnetic shape memory alloys\, magn
 etic nanoparticles for biomedical applications\, and to solid state hydrog
 en storage materials with a particular emphasis on tailoring structural an
 d chemical properties on the nanoscale. Resource efficiency on element\, p
 rocess and product levels as well as recycling of rare earth containing ma
 terials are also in the focus of his work.\nHe has published more than 370
  papers in refereed journals\, and has given more than 210 invited talks. 
 In 2011 he was an IEEE Magnetics Society Distinguished Lecturer on the top
 ic of Magnet Materials for Energy. He is on the Intl. Advisory Committees 
 of JEMS\, of the Int. Workshop on Rare Earth Permanent Magnets and their A
 pplications and of the Magnetic Refrigeration Intl. Working Party\, and of
  the TMS Magnetic Materials Committee. He served on the IEEE Magnetics Soc
 iety AdCom (2011-2013). He is EU ERAMIN (Network on the Industrial Handlin
 g of Raw Materials for European Industries) advisor on substitution\, a me
 mber of the EU ERECON (European Rare Earths Competency Network) Steering C
 ommittee and chairs the DGM Fachausschuss Functional Materials. He did hol
 d visiting Professorships at Imperial College London and Chinese Academy o
 f Science NIMTE Institute in Ningbo and from autumn 2017 he is a visiting 
 Professor at University of Parma. In April 2017 he was awarded an ERC Adva
 nced Grant (Cool Innov) and he will receive the Prize of the German Materi
 als Society (DGM Prize 2018).\n 
LOCATION:MXF 1 https://plan.epfl.ch/?room==MXF%201
STATUS:CONFIRMED
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