How to use Gadolinium in a copper vessel to repel iron ?

Gadolinium is a rare earth metal that can be used to enhance the magnetic properties of a material, but it cannot be used to repel iron. Copper, on the other hand, is a non-magnetic material and does not have any repelling properties towards iron.

If you want to prevent iron from sticking to a copper vessel, one option is to use a non-stick coating on the surface of the copper. This can be done by applying a non-stick coating material such as Teflon or a ceramic coating to the copper surface.

Alternatively, you can also try polishing the copper vessel to make the surface as smooth as possible, which can reduce the likelihood of iron sticking to it. You can use a metal polishing compound or a mixture of vinegar and salt to polish the copper.

It is important to note that the effectiveness of these methods may vary depending on the specific application and the type of iron being used. It is recommended to consult with a materials scientist or engineer with expertise in surface treatments and coatings to determine the best approach for your specific needs.