Keyword Suggestions

Results
 
 
Account Login
 
 
 
 
 

Library Navigation

 
 

Browse Meetings

 
 
 
TT4.02 - Four Dimensional X-Ray Microscopy of Domain Boundaries in NiMnGa Crystals 
Date/Time:
December 2, 2014   2:15pm - 2:30pm
 
Taxonomy
 
Format:
       
  Synced Audio / Video / Slides
 
Share:
 

Four Dimensional (4D) X-ray Microscopy with a submicron beam size was used to follow the evolution of strains in off-stoichiometric NiMnGa twinned crystals near a type I (hard) twin boundaries under a magnetic field. A laminate A/B microstructure was revealed near the twin boundaries in the "A" variant. Large strain gradients were observed in the "C" variant in the immediate vicinity of the type I twin boundary: the lattice is under large tensile strains ~0.4% along the c- axes within the first micron. Distinct "a"and "b" lattice parameter evolution with temperature and magnetic field was demonstrated. In an applied magnetic field, the strain field was observed at larger distances from the twin boundary and became more complex. Stochastic twin boundary motion was observed after the magnetic field reaches a certain critical value. Research sponsored by the LDRD Program of Oak Ridge National Laboratory, U. S. Department of Energy.
 


 
 
Average Rating: (No Ratings)
  Was great, surpassed expectations, and I would recommend this
  Was good, met expectations, and I would recommend this
  Was okay, met most expectations
  Was okay but did not meet expectations
  Was bad and I would not recommend this
 



Submit
 
Performance Enhancement of Pentacene Based Organic Field-Effect Transistor through DNA Interlayer
Semiconducting Polymer-Dipeptide Nanostructures by Ultrasonically-Assisted Self-Assembling
DNA as a Molecular Wire: Distance and Sequence Dependence
Structure-Property Relationship in Biologically-Derived Eumelanin Cathodes Electrochemical Energy Storage
Artificial Physical and Chemical Awareness (proprioception) from Polymeric Motors