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Hello Jason,<br>
<br>
Due to its really high temperature to evaporate and slow deposition
rate, we purchased a sputter target. Works great! <br>
<br>
You just have to take out a loan to afford the target.
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Best Regards,<br>
Brent<br>
<img src="cid:part1.SS0CBVDM.7DFfqQVH@ufl.edu" border="0"></div>
<br>
<div class="moz-cite-prefix">On 8/4/2026 1:18 PM, Oncel, Nuri wrote:<br>
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Email]</b></span>
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Hi Jason,</div>
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I have deposited Ir on a variety of surfaces, and the process
is actually quite straightforward. I simply connected an Ir
wire to a high current feedthrough (connected to a UHV STM
chamber) and passed the current through it to evaporate the
metal. I calibrated the deposition rate using Auger.</div>
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A common approach is to use a W wire and wrap the source
material around it. However, that method can also result in
some W being co-deposited along with Iridium.</div>
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For your reference, I've attached three of my papers that
mention Ir deposition.</div>
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Please feel free to reach out if you have any questions or if
there's anything else I can help with.</div>
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Best,</div>
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Nuri</div>
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<span style="font-size: 12pt;">Professor Nuri Oncel, Ph.D.</span></p>
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<span style="font-size: 12pt; color: blue;"><a href="https://www.und.edu/Nanofoundry" originalsrc="https://www.und.edu/Nanofoundry" style="color: blue; margin-top: 0px; margin-bottom: 0px;" moz-do-not-send="true"><u>Director of UND-NanoFoundry</u></a></span></p>
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<span style="font-size: 12pt;">Department of Physics and
Astrophysics</span></p>
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<span style="font-size: 12pt;">University of North Dakota</span></p>
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<span style="color: blue;"><a href="https://sites.google.com/view/oncel-research-group/group" originalsrc="https://sites.google.com/view/oncel-research-group/group" style="color: blue; margin-top: 0px; margin-bottom: 0px;" moz-do-not-send="true"><u>https://sites.google.com/view/oncel-research-group/group</u></a></span><span style="color: black;"> </span></p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> labnetwork
<a class="moz-txt-link-rfc2396E" href="mailto:labnetwork-bounces@mtl.mit.edu"><labnetwork-bounces@mtl.mit.edu></a> on behalf of EDWARDS,
JASON R CTR USAF AFMC AFRL/RYDD
<a class="moz-txt-link-rfc2396E" href="mailto:jason.edwards.30.ctr@us.af.mil"><jason.edwards.30.ctr@us.af.mil></a><br>
<b>Sent:</b> Tuesday, August 4, 2026 8:09 AM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:labnetwork@mtl.mit.edu">labnetwork@mtl.mit.edu</a>
<a class="moz-txt-link-rfc2396E" href="mailto:labnetwork@mtl.mit.edu"><labnetwork@mtl.mit.edu></a><br>
<b>Subject:</b> [labnetwork] Evaporating Iridium</font>
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<p class="x_MsoNormal"><span style="font-size:11.0pt">Good
morning network,</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">
I am interested to see if any of you have experience
using Iridium in your evaporation systems. We are
getting conflicting information from various
manufacturers on how we should go about melting our
Iridium. Our OEM recommends melting straight in the
pocket while Lesker recommends using their Fabmate
crucible liner. If you evaporate Iridium, do you use a
liner in your system? In what form do you receive your
Iridium? Pellets, shot, rods? For what it is worth the
Iridium that was purchased for us is flat fractured
pieces ranging in size from dust to 8mm, which seems
less than ideal.</span></p>
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<p class="x_MsoNormal"><span style="font-size:11.0pt">Thanks,</span></p>
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<p class="x_MsoNormal"><b><span style="font-size:10.0pt; font-family:"Century Gothic",sans-serif; color:#004987">Jason
Edwards</span></b><span style=""></span></p>
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Room Facilities Manager | National Security
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