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Microstructure of BST. What is the tail?

  1. Jul 1, 2012 #1
    Attached is the SEM microstructure of Barium strontium Titanate (BST) to which has been added over 2% borate so as to increase the grain size. The image clearly shows abnormal grain growth and the grains are huge - around a 100 um. But also visible in the image are these tails that emanate from the grains. Does anyone have any guess as to what that is?
     

    Attached Files:

  2. jcsd
  3. Jul 2, 2012 #2
    i may be wrong, but are the tails growing along scratches? could that be a preferential growth path?
     
  4. Jul 2, 2012 #3
    that may be true. Thanks for the info.
     
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