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I'm dealing with an interactive work of fiction right now, and one proposal is to combine two types of puzzles with a magnetic gas. I know that fermionic $\ce{^6Li}$, when cooled below 1 K, has shown verifiable ferromagnetic properties, but that is far too cold to be applicable to the work's setting.

(I'm only willing to suspend the user's belief so much.)

I know that on heating above the Curie temperature for a material, magnetic properties dissolve; but what that temperature is varies quite a bit. (I've seen them between 90 K and 1400 K, which is pretty radical.) Has anyone yet discovered another molecule that remains magnetic in a gaseous phase? Are any of them at least hypothesized?

I'm dealing with an interactive work of fiction right now, and one proposal is to combine two types of puzzles with a magnetic gas. I know that fermionic $\ce{^6Li}$, when cooled below $\pu{1 K}$, has shown verifiable ferromagnetic properties, but that is far too cold to be applicable to the work's setting.

(I'm only willing to suspend the user's belief so much.)

I know that on heating above the Curie temperature for a material, magnetic properties dissolve; but what that temperature is varies quite a bit. (I've seen them between $\pu{90 K}$ and $\pu{1400 K}$, which is pretty radical.) Has anyone yet discovered another molecule that remains magnetic in a gaseous phase? Are any of them at least hypothesized?

I'm dealing with an interactive work of fiction right now, and one proposal is to combine two types of puzzles with a magnetic gas. I know that Fermionic 6Li, when cooled below 1K, has shown verifiable ferromagnetic properties, but that is far too cold to be applicable to the work's setting.

(I'm only willing to suspend the user's belief so much.)

I know that on heating above the Curie temperature for a material, magnetic properties dissolve; but what that temperature is varies quite a bit. (I've seen them between 90K and 1400K, which is pretty radical.) Has anyone yet discovered another molecule that remains magnetic in a gaseous phase? Are any of them at least hypothesized?

I'm dealing with an interactive work of fiction right now, and one proposal is to combine two types of puzzles with a magnetic gas. I know that fermionic $\ce{^6Li}$, when cooled below 1 K, has shown verifiable ferromagnetic properties, but that is far too cold to be applicable to the work's setting.

(I'm only willing to suspend the user's belief so much.)

I know that on heating above the Curie temperature for a material, magnetic properties dissolve; but what that temperature is varies quite a bit. (I've seen them between 90 K and 1400 K, which is pretty radical.) Has anyone yet discovered another molecule that remains magnetic in a gaseous phase? Are any of them at least hypothesized?