Microstructure of BST. What is the tail?

  • Thread starter vinven7
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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?
 

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

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