What are the three metallic substances associated with the three mutual inductances of Tesla’s trimetal generator?

Nikola Tesla's "TriMetal Generator" consists of three mutual inductances among five or more coils ...

The reactance of copper (aka, diamagnetism) is the primary self-inductance.

The ferromagnetism of iron is the secondary self-inductance.

The paramagnetism of aluminum is the tertiary self-inductance.

The first mutual inductance is the reference point from which to derive the other two. Its parameter is less than 100% and equal to or more than the Golden Ratio of 61.8% (more precisely found by taking the square root of 5, subtracting 1, and dividing by 2). For this example, I'll choose 70%. Its relationship is between copper and iron.

The second mutual inductance is the relationship between copper and aluminum derived from the first mutual inductance by subtracting the first mutual inductance from 100% and taking the square root. So, subtracting 70% from 100% yields 30%. Taking its square root is approximately equal to 55%, or more precisely: 0.5477225575.

The third mutual inductance is the relationship between iron and aluminum which are mutually antagonistic since ferromagnetism wants to collect magnetism within itself and remember it (remanence) while the paramagnetism of aluminum wants to expel its magnetism and forget it. William Lyne calls this property: "reflective". Their magnetic coupling is found by subtracting the first mutual inductance from 100% and taking the cube power. So, subtracting 70% from 100% yields 30% and raising this to the third power yields, 0.3^3 = 0.027 or 2.7%.

Here is the example of paramagnetism which was mentioned in this recording ...

http://vinyasi.info/realsim?startCircuit=coldstart.txt

... or ...

http://is.gd/coldstart

Parametric Excitation/Amplification was the term I was trying to remember towards the end of this recording! ...

https://is.gd/paratexts

... equivalent to ...

Parametric Excitation and Oscillation of both the Electrical and Mechanical Realms (vinyasi.info)