[labnetwork] Ni evaporation

[Beth Fuchs]

For quite some time we used vitreous carbon and found that the crucible 
will crack unless the beam current is ramped up and down VERY slowly (I 
think we ramp at about 2mA/min compared to 25mA/min for other metals). 
We finally dedicated a pocket in our indexer for Ni without a crucible 
liner and have had no problems since. The Ni does not adhere to the 
copper hearth so we can remove it easily for cleaning.
Beth



On 3/23/2015 3:30 AM, Nava Ariel- Sternberg wrote:
> Hi all,
>
> We've came across some issues with Ni e-beam evaporation and thought of
> consulting the network:
>
> Which crucible are you using for Ni e-beam evaporation? We've tried
> Al2O3 and Vitreous carbon, both recommended by the material/crucible
> suppliers.
>
> Any tips with respect to melting the material or the evaporation process
> itself?
>
> Thanks,
>
> Nava
>
> Nava Ariel-Sternberg, Ph.D.
>
> Tel-Aviv University Center for Nanoscience and Nanotechnology, Managing
> Director
>
> MNCF Manager
>
> Phone: 03-640-5619
>
> Mobile: 054-9984959
>
> Email: anava at tauex.tau.ac.il <mailto:anava at tauex.tau.ac.il>
>
>
>
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-- 
Beth Fuchs
Database Administrator
Center for High Tech Materials
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