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SUMMARY:Crystal structure in Materials Science
DTSTART:20261102T133000Z
DTEND:20261102T143000Z
DTSTAMP:20261030T035000Z
UID:indico-event-667@indico.frm2.tum.de
CONTACT:Nicolas.Walte@frm2.tum.de\;d.saha@fz-juelich.de
DESCRIPTION:Speakers: Andreas Leineweber (TU Bergakademie Freiberg)\n\nMos
 t scientists agree that most of the properties of hard-condensed matter ca
 n somehow be traced back to the underlying crystal structure. However\, es
 pecially in materials science it is widely recognised that microstructure 
 plays a similar or even more important role than crystal structure itself\
 , when it comes to specific properties\, e.g. mechanical properties beyond
  simple elastic behaviour.\nThe speaker presents a personal perspective on
  the role of crystal structure in his group’s research on metallic and s
 elected non-metallic hard condensed matter systems. This research uses var
 ious types of diffraction techniques ranging from X-ray and neutron diffra
 ction on polycrystalline specimens to more localised electron microscopy-b
 ased techniques. However\, all these techniques are affected by both cryst
 al structure and microstructure of the specimen under investigations.\nHen
 ce\, evaluation of diffraction measurements requires additional considerat
 ions to partition between crystal structure and microstructure. This happe
 ns by requiring that the crystal structure should reflect thermodynamic bu
 lk equilibrium. The partitioning is essential to avoid misinterpreting mic
 rostructural effects as genuine symmetry lowering and consequently reporti
 ng spurious low-symmetry variants of well-established crystal structures. 
 In any case\, there is important interplay between crystal structure and c
 orresponding typical microstructures. The examples shown have been selecte
 d to highlight aspects sometimes overlooked upon doing “routine” cryst
 al structure analysis.\n\nhttps://indico.frm2.tum.de/event/667/
LOCATION:PH HS 3 (Physics Department)
URL:https://indico.frm2.tum.de/event/667/
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