@DodR
If that Motar can run TC, the manufacturer should be able to tell you the TCR value. Hell, he created it. TCR values as shown in material datasheets and steam-engine are usually shown like 880×10-6 (SS316 which expands to 0.000880) or 6000×10-6 (for Ni200 which expands to 0.006000).
Then you have products like the AVS Molecule with their directly energized coil-less ceramic crucible. Some prepaid users are waiting now going on 3 years waiting on their $800 pipe dream mod.
Also claims TC, yet the material actually has a negative TCR (or their early ones did). NO standard nicotine vaping mod can handle a negative TCR.
If you apply power to that thing, does the resistance stay the same, go up, or go down? All while using straight watts over say a 20-30 second period. Don't do anything special. Put it on the mod, read the resistance in straight watts, hit the power/fire button while watching the resistance.
Let me know starting resistance, end resistance.