Author Topic: amorphous structure for iron in radiation damage  (Read 23 times)

zahid

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amorphous structure for iron in radiation damage
« on: July 11, 2019, 04:45:34 AM »
Dear Sir

I am analyzing radiation damage of BCC Fe. When I give common neighbour analysis, I can see after radiation there is some percentage of other structure. Can I say that other structures as amorphous structures?

Alexander Stukowski

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Re: amorphous structure for iron in radiation damage
« Reply #1 on: July 11, 2019, 09:12:49 AM »
Hi,

No, that statement would not be right in general. The common neighbor analysis will only mark those atoms as 'BCC' that have 8 nearest neighbors and 6 second nearest neighbor atoms positioned on lattice sites. All other atoms will be marked as 'Other'.

For example: If there is a vacancy in your crystal, which is quite common in irradiated materials, all the surrounding 12 atoms will be marked as 'Other', because they are all missing at least one neighbor atom. The material surrounding the vacancy is not amorphous, it's still a crystal but a defective one.

-Alex
« Last Edit: July 11, 2019, 09:14:26 AM by Alexander Stukowski »