CD and other readers,
I would like to emphasize the worthwhileness of on going exploration in these experiments!
Working up around the Knee of the BH Curve can have benefits.
We must realise, the BH Curve:
Also known as the Hysteresis Curve is an Energy State above that of Equilibrium, above Zero on the below Plot:
Ref: Magnetic Hysteresis
Magnetic energy and electric energy are related by Maxwell's equations. The potential energy of a magnet of magnetic moment m in a magnetic field B is defined as the mechanical work of the magnetic force (actually magnetic torque) on the re-alignment of the vector of the Magnetic dipole moment and is equal to:
Ep,m = − m ⋅ B
while the energy stored in an inductor ( of inductance L ) when a current I flows through it is given by:
Ep,m = 1/2 LI2
This second expression forms the basis for superconducting magnetic energy storage. Energy is also stored in a magnetic field. The energy per unit volume in a region of space of permeability μ0 containing magnetic field B is:
u = 1/2 B2 / μ0
More generally, if we assume that the medium is paramagnetic or diamagnetic so that a linear constitutive equation exists that relates B and H, then it can be shown that the magnetic field stores an energy of
E = 1/2 ∫ H ⋅ B dV
where the integral is evaluated over the entire region where the magnetic field exists.
Ref: Magnetic Energy
Energy is stored in the Magnetic Field, this is straightforward, most of us know these experimental proofs. The Inductive Spike experiments of John Bedini and so on. As you have shown in this Thread.
So, Saturation is an Energy state above the Zero graticule line on the plot:
Saturation occurs because as we remember from the previous Magnetism tutorial which included Weber’s theory, the random haphazard arrangement of the molecule structure within the core material changes as the tiny molecular magnets within the material become “lined-up”.
As the magnetic field strength, ( H ) increases these molecular magnets become more and more aligned until they reach perfect alignment producing maximum flux density and any increase in the magnetic field strength due to an increase in the electrical current flowing through the coil will have little or no effect.
Ref: BH Curve
Some core materials hold Residual Flux or Remanence.
A closed Core will not release Flux in most cases, for example Ed Leedskalnin PMH. A Gap is required to allow the movement of Flux. Raselli1's Channel ( www.youtube.com /user/Raselli1/videos ) is worth a look for more information.
Floyd Sweet's Magnets were in the order of around 800 Gauss - I believe he did have partial Cores, I also believe they were bought up, around the knee of the BH Curve.
Please see, these two images are related, H is strength, B is Density, we must see Newtons: What goes up, must come back down.
So I would like to encourage more work on this experiment!