[labnetwork] Discolouration on evaporated Mg

[Iyer, Nandini]

Hi,

Recently, we have noticed some unusual spots on our evaporated Mg film (~10um).  It consists of a contaminating particle and a ring shaped discolouration around the particle. We suspect that the contaminant may be Mg particles deposited during evaporation but we are not certain about this. Does anyone have any theories about what could be happening?

Thank you.

Nandini
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mtl.mit.edu/pipermail/labnetwork/attachments/20130716/2478c534/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Ring_around_Contaminant_On_Mg_Film.jpg
Type: image/jpeg
Size: 32836 bytes
Desc: Ring_around_Contaminant_On_Mg_Film.jpg
URL: <https://mtl.mit.edu/pipermail/labnetwork/attachments/20130716/2478c534/attachment.jpg>