[labnetwork] Use of strontium in sputtering

[Olona, Leonard E.]

Hey Marc,

I have an extensive background working with Sr.   I primarily use it with
MBE.  IV-VI growth.  Strontium is very toxic.  It is very porous and
reacts immediately when exposed to atmosphere.   Its best to load your
crucible or cell inside a glove box and in an inert environment.
Outgassing post loading is very important.  It has a high vapor pressure.
(not as bad as Selenium or As)

If used in a sputtering system.  You need to make sure your chamber is
always kept under vacuum and no O2.  Be aware that you Sr can oxidize
quickly and will react with other constituents inside your chamber.

Its a nasty element!  But works great when growing lead salts and making
Thermal Electric devices!!

Good luck and wear your PPE!!!   don’t breath it

-Len

Leonard E. Olona
Facility Manager RIL
Cleanroom Manager
University of Oklahoma
web: http://arrc.ou.edu/
web: http://cleanroom.ou.edu/    voice: +1- 405- 325-4374






 




On 2/27/15 8:27 AM, "Papakyriakou, Marc R" <mpapakyriakou at gatech.edu>
wrote:

>Dear MTL lab network,
>
>I am a graduate student at Georgia tech and I have a question about
>possible use of strontium in a cleanroom environment. I am working to get
>strontium qualified as a material for use in Georgia Tech's cleanroom,
>but they want to know what handling procedures other cleanrooms use for
>dealing for strontium before they agree to let it be used. I am
>specifically trying to sputter pure strontium. Does anyone in this
>network have experience with using it in this way? And if not
>specifically strontium, is there a general handling procedure for use of
>highly reactive and/or pyrophoric materials?
>
>Thank you, 
>
>Marc Papakyriakou
>Graduate Research Assistant
>Woodruff School of Mechanical Engineering
>Georgia Institute of Technology
>http://www.yeelab.gatech.edu​
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