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<div>Hi Nava,</div>
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<div>We have also experienced problems in our lab with Ni e-beam evaporation in VC or Al2O3 crucibles. We found that the VC crucibles would break down after a few deposition cycles (and would “tarnish” the Ni melt) and the one time we tried Al2O3 as a crucible
liner it broke immediately upon removal from our E-beam hearth. We have settled on using Tungsten crucibles for our Ni e-beam evaporation. We have not observed any notable problems with this process and our first W crucible lasted for over two years before
we needed to retire it.</div>
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<div>Best regards,</div>
<div> -Nathan</div>
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<div>-- </div>
<div>Nathan Nelson-Fitzpatrick PhD</div>
<div>Nanofabrication Process Engineer</div>
<div>Quantum NanoFab</div>
<div>University of Waterloo</div>
<div>200 University Avenue West</div>
<div>Waterloo, ON Canada N2L 3G1</div>
<div>Ph: +1 519-888-4567 ext. 31796</div>
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<span style="font-weight:bold">From: </span>Nava Ariel- Sternberg <<a href="mailto:anava@tauex.tau.ac.il">anava@tauex.tau.ac.il</a>><br>
<span style="font-weight:bold">Date: </span>Monday, March 23, 2015 at 5:30 AM<br>
<span style="font-weight:bold">To: </span>"<a href="mailto:labnetwork@mtl.mit.edu">labnetwork@mtl.mit.edu</a>" <<a href="mailto:labnetwork@mtl.mit.edu">labnetwork@mtl.mit.edu</a>><br>
<span style="font-weight:bold">Subject: </span>[labnetwork] Ni evaporation<br>
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<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">Hi all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">We've came across some issues with Ni e-beam evaporation and thought of consulting the network:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">Which crucible are you using for Ni e-beam evaporation? We've tried Al2O3 and Vitreous carbon, both recommended by the material/crucible suppliers.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">Any tips with respect to melting the material or the evaporation process itself?
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">Nava<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">Nava Ariel-Sternberg, Ph.D.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">Tel-Aviv University Center for Nanoscience and Nanotechnology, Managing Director<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">MNCF Manager<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">Phone: 03-640-5619</span><span lang="HE" dir="RTL" style="font-size: 11pt; font-family: Arial, sans-serif; color: rgb(31, 73, 125);"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">Mobile: 054-9984959<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">Email:
<a href="mailto:anava@tauex.tau.ac.il"><span style="color:blue">anava@tauex.tau.ac.il</span></a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
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