Body-centered-cubic # and types of holes?

  1. In the Body-centered-cubic (BCC) unit cell which types of holes (interstices) are there? (tetrahedral, octahedral, or cubic) How many of each type?

    Thanks!
     
  2. jcsd
  3. berkeman

    Staff: Mentor

    What do you think? What would your answers be and why?

    http://www.members.tripod.com/~eppe/jpgs/bodcubic.jpg

    [​IMG]
     
  4. They look like octahedral holes to me, but online literature says tetrahedral OR cubic OR tetrahedral and octahedral.

    MEGACONFUSION
     
  5. berkeman

    Staff: Mentor

    Nuts, my image source went away. I got it from Google Images, so here's another:

    http://www.ul.ie/~walshem/fyp/Bcc unit.gif

    [​IMG]

    You might try browsing through some Google Images for Body Centered Cubic, to see if the images help to show the shape of the spaces better...
     
  6. berkeman

    Staff: Mentor

    Can you post the links to the conflicting online sources? Thanks.
     
  7. berkeman

    Staff: Mentor

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