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<p class="MsoNormal">For e-beam of Ni you should try a “starter source”. At least that is the term I learned long ago. It is a solid piece of Ni in the shape of the pocket of your gun. No additional liner is used. As you evaporate the Ni and create a small
hole in the top of the source you simply add Ni pellets. It last a long time this way. Most of the suppliers should be able to supply this to you. I used to buy them from Kamis.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Shawn<o:p></o:p></p>
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<p class="MsoNormal"><b>From:</b> labnetwork <labnetwork-bounces@mtl.mit.edu> <b>
On Behalf Of </b>shokoofe haghighi<br>
<b>Sent:</b> Wednesday, December 4, 2024 4:35 AM<br>
<b>To:</b> labnetwork@mtl.mit.edu<br>
<b>Subject:</b> [labnetwork] question about Liner for Ni Ebeam Evaporation<o:p></o:p></p>
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<b><span style="color:black">External Message:</span></b><span style="color:black"> Use Caution
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Hi, hope you are having good days, <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">this is Haghighi, working on metallization by a PVD, using thermal and Ebeam evaporation. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">I have some issues choosing the right liner for Ni Ebeam evaporating, hope you find time to guide me through it. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">We have tested graphite, glassy carbon coated graphite, Al2O3, Mo, W and Cu liners so far. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"> Graphite liner just broke after first run from the border line of Ni surface. <span style="color:black">Glassy carbon coated graphite was more or less the same,</span><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"> Al2O3 endured for 4-5 runs before breaking but there were cracks on it, <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"> Mo liner totally melted and some kind of alloy was produced,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"> 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.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">do you have any other suggestions? <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">high voltage: 6.1 KV<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">emission current: 3 - 5 A<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Thanks for your time and attention in advance, I hope you kindly find time and consider replying me, <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Dr. Haghighi<o:p></o:p></span></p>
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