<div dir="ltr">Haghighi,<div><br></div><div>For e-beam evaporation, we run Ni directly in the pocket. It stays in a nice ball and is easily removed (as opposed to wetting and adhering to the hearth). I have not tried thermal evaporation with Ni.</div><div><br></div><div>-Kevin</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Wed, Dec 4, 2024 at 11:46 AM Bernhard Reineke <<a href="mailto:bernhard.reineke@uni-paderborn.de">bernhard.reineke@uni-paderborn.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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Hi Haghighi,<br>
<br>
we tried this once, same result. All liners will crack. Lesker has some recommendations on Ebeam evaporation of Ni: slow power ramp up and down (works well to prevent cracking for ~2-4 Runs, with fabmate). A Cu liner should work better but we never tested that.<br>
<br>
<a href="https://www.lesker.com/newweb/deposition_materials/depositionmaterials_evaporationmaterials_1.cfm?pgid=ni1" target="_blank">https://www.lesker.com/newweb/deposition_materials/depositionmaterials_evaporationmaterials_1.cfm?pgid=ni1</a><br>
<br>
Best,<br>
<br>
Bernhard
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<div id="m_2364900368068671858divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>Von:</b> labnetwork <<a href="mailto:labnetwork-bounces@mtl.mit.edu" target="_blank">labnetwork-bounces@mtl.mit.edu</a>> im Auftrag von shokoofe haghighi <<a href="mailto:shokoofe_haghighi@yahoo.com" target="_blank">shokoofe_haghighi@yahoo.com</a>><br>
<b>Gesendet:</b> Mittwoch, 4. Dezember 2024 10:35:19<br>
<b>An:</b> <a href="mailto:labnetwork@mtl.mit.edu" target="_blank">labnetwork@mtl.mit.edu</a><br>
<b>Betreff:</b> [labnetwork] question about Liner for Ni Ebeam Evaporation</font>
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<div dir="ltr">Hi, hope you are having good days, </div>
<div dir="ltr"><br>
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<div dir="ltr">this is Haghighi, working on metallization by a PVD, using thermal and Ebeam evaporation. </div>
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<div dir="ltr">I have some issues choosing the right liner for Ni Ebeam evaporating, hope you find time to guide me through it. </div>
<div dir="ltr">We have tested graphite, glassy carbon coated graphite, Al2O3, Mo, W and Cu liners so far. </div>
<div dir="ltr"> Graphite liner just broke after first run from the border line of Ni surface. <span><span style="color:rgb(0,0,0);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif">Glassy carbon coated graphite was more
or less the same,</span></span></div>
<div dir="ltr"> Al2O3 endured for 4-5 runs before breaking but there were cracks on it, </div>
<div dir="ltr"> Mo liner totally melted and some kind of alloy was produced,<br>
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<div dir="ltr"> W and Cu endured but their internal walls were some how melted and we can't be sure about pureness of evaporated Ni and final produced thin films.<br>
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<div dir="ltr">do you have any other suggestions? </div>
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<div dir="ltr">high voltage: 6.1 KV</div>
<div dir="ltr">emission current: 3 - 5 A</div>
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<div dir="ltr">Thanks for your time and attention in advance, I hope you kindly find time and consider replying me, </div>
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<div dir="ltr">Dr. Haghighi</div>
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