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DTSTART:20140922T113000
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URL:https://murmitoyen.com/events/vanille/udem/detail/486836
LOCATION:Université de Montréal - Pavillon J.-Armand-Bombardier\, 5155\, 
 chemin de la rampe \, Montréal\, QC\, Canada\, H3T 2B2
SUMMARY:Structural and magnetic properties of MnP films and nanocrystals 
 – Nima Nateghi\; PolyMTL
DESCRIPTION:Nima Nateghi\, Département de génie physique\, Polytéchniqu
 e Montréal\, Montréal\, QC\, Canada.Heterogeneous magnetic semiconductor
 s consisting of manganese pnictide nanomagnets embedded in semiconductor m
 atrices have attracted a great deal of attention during the past decade. T
 heir enhanced magnetic functionalities\, such as Giant Magneto-Resistance 
 (GMR) and Giant Magneto-Optical (GMO) Kerr and Faraday effects makes them
  potential candidates for magnetoelectronic and magnetooptoelectronic appl
 ications. The structure and the texture of the embedded nanoclusters are k
 nown to significantly affect the magnetic properties of these heterogeneo
 us semiconductors. Hence\, in order to achieve the desired magnetic functi
 onalities it is important to characterize\, understand and control the str
 ucture and texture of the system. The first step would be to understand th
 e growth mechanism and texture selection of the nanoclusters.In this talk\
 , we present a study of manganese phosphide (MnP) thin films grown on gall
 ium phosphide (GaP) substrates by metal organic vapor phase epitaxy. We sh
 ow how studying the endotaxial growth and texture selection of MnP thin fi
 lms brings us one step closer to understanding the growth mechanism and te
 xture selection of MnP nanoclusters embedded in a GaP matrix. We also pres
 ent a method\, which we have developed based on magnetic measurements\, to
  determine the size distribution of MnP nanoclusters by constructing their
  magnetic size histogram. Site web du groupe du Dr. NetaghiCette confér
 ence est présentée par le RQMP Versant Nord du Département de physique
  de l'Université de Montréal et le Département de génie physique de Po
 lytechnique Montréal.
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