Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Effective masses of the insulator materials

  1. Aug 8, 2011 #1
    What are the effective mass of conduction band (mc) and valence band (mv) of insulator material Al2O3. Kindly tell me your reference
     
  2. jcsd
  3. Aug 8, 2011 #2

    ZapperZ

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2016 Award

    1. Do you know the definition of effective mass?

    2. Can you find the band structure of Al2O3?

    Zz.
     
  4. Aug 9, 2011 #3
    i know that the effective mass is calculated from the E-K diagram (inversely proportional to the curvature) and E-K diagram is calculated for crystalline structure only not amorphous. I do not know whether Al2O3 was crystalline or amorphous. Thanks.
     
  5. Aug 9, 2011 #4

    ZapperZ

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2016 Award

    Look up "sapphire". That's a single-crystal Al2O3.

    Zz.
     
  6. Aug 11, 2011 #5
    Thanks for your reply. Do you know its effective masses mc and mv?. Thanks!
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Effective masses of the insulator materials
  1. Effective mass (Replies: 4)

  2. Effective mass (Replies: 1)

  3. Effective mass (Replies: 2)

  4. Effective mass (Replies: 3)

  5. Effective mass (Replies: 1)

Loading...