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DTSTART:20160511T103000
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URL:https://murmitoyen.com/events/vanille/udem/detail/688048-heusler-compou
 nds-for-magnetoelectronics-and-magnetocalori-michael-nicklas-max-planck-in
 stitute-for-chemical-physics-of-solids-dresden-allemagne
LOCATION:Université de Montréal - Pavillon Roger-Gaudry\, 2900\, chemin d
 e la Tour\, Montréal\, QC\, Canada\, H3T 1J6
SUMMARY:Heusler compounds for magnetoelectronics and magnetocalori - Michae
 l Nicklas (Max Planck Institute for Chemical Physics of Solids\, Dresden\,
  Allemagne)
DESCRIPTION:Michael Nicklas\, Max Planck Institute for Chemical Physics of 
 Solids\, Dresden\, Allemagne
\n 
\nAbstract: 
\nExperiments in high magn
 etic fields are essential for the understanding of the multi-functional pr
 operties found in Heusler alloys. We investigated the exchange-bias effect
  in Mn–Pt–Ga Heusler alloys in static and pulsed magnetic fields at th
 e High-Magnetic Field Laboratories in Nijmegen and Dresden (HZDR). Our fin
 ding of an exceptionally high exchange-bias in a compensated ferrimagnet m
 ay lead to the development of magneto-electronic devices and rare earth-fr
 ee exchange-biased hard magnets.1\,2 Pulsed-field experiments\, furthermo
 re\, permit us to study materials on fast time scales between 10 ms and 1s
 \, which allowed us to probe Ni-Mn-In shape-memory Heusler alloys for the 
 prospective use in magnetocaloric cooling devices. Our results show that t
 he structural and magnetic contributions to the magnetocaloric effect as w
 ell as the irreversible behavior observed at the martensitic transition ha
 ve to be carefully considered for future cooling applications.3\,4
\n1A. K
 . Nayak\, M. Nicklas\, S. Chadov\, C. Shekhar\, Y. Skourski\, J. Winterlik
 \, and C. Felser\, Phys. Rev. Lett. 110\, 127204 (2013). 
\n2A. K. Naya
 k\, M. Nicklas\, S. Chadov\, P. Khuntia\, C. Shekhar\, A. Kalache\, M. Bae
 nitz\, Y. Skourski\, V. K. Guduru\, A. Puri\, U. Zeitler\, J. M. D. Coey a
 nd C. Felser\, Nature Mater. 14\, 679 (2015). 
\n3A. K. Nayak\, C. Sala
 zar Mejia\, S. W. D’Souza\, S. Chadov\, Y. Skourski\, C. Felser\, and M.
  Nicklas\, Phys. Rev. B 90\, 220408(R) (2014).
\n4M. Ghorbani Zavareh\, C
 . Salazar Mejía\, A. K. Nayak\, Y. Skourski\, J. Wosnitza\, C. Felser\, a
 nd M. Nicklas\, Appl. Phys. Lett. 106\, 071904 (2015).
\n 
\nProf. Nickl
 as' research web page
\n 
\nCette conférence est présentée par le RQMP
  Versant Nord du Département de physique de l'Université de Montréal 
 et le Département de génie physique de Polytechnique Montréal.
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