I wonder why this phenomenon occurs:

"Unlike unextended screw dislocations, the extended screw dislocations define a specific slip plane, the {111} plane of the fault and it will be constrained to move in this plane."

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    $\begingroup$ You need to provide a lot more information. Where is this quote coming from? What have you done to figure it out? What exactly don't you understand? $\endgroup$
    – Cody Aldaz
    Commented Jan 25, 2021 at 8:46
  • $\begingroup$ Why are the atom planes situated above (111) pane and the ones situated below the (111) plane pulling each other? $\endgroup$
    – user586228
    Commented Jan 25, 2021 at 9:50
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    $\begingroup$ +1 But I removed the second question because we have a policy to only allow one question per question, and also I agree with Cody that you should give a reference for where this quote came from. $\endgroup$ Commented Jan 25, 2021 at 19:23