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Frequently Asked Questions

     Nickel and iron each have a vapor pressure of ~1E-2 Torr at around 1,500°C with nickel’s vapor pressure being slightly lower at any given temperature. Because the material rests at the bottom of the crucible and, typically, the crucible’s bottom is cooler than its sides, the heater and crucible must be heated to a much higher temperature to achieve evaporation. Therefore, a power supply may not be capable of getting the heater hot enough.  

Category: Evaporation Sources

Sub-Category: Crucibles and Crucible Heaters

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Contact Us - Frequently Asked Questions - Why is my nickel/iron (81/19 WT%) material not melting when I try to thermally evaporate it out of a crucible?