Gadolinium Magnet Generator.

[tak22]

I researched the transition speed of gadolinium and found a few things, nothing I could understand.  Does anyone know the speed of the transition from ferromagnetic to non and vice versa?

This paper calculates a 11hz cycle frequency through the Curie Point:

Thermodynamic and Relaxation Processes near Curie Point in Gadolinium
http://www.google.com/url?url=http://arxiv.org/pdf/1404.5648&rct=j&q=&esrc=s&sa=U&ei=F1gjVYHAA4qGyATUn4HYDw&ved=0CBQQFjAA&sig2=vHS-DOXv9BKOuXBcqCmBDw&usg=AFQjCNEjtHcyVSq7mjAfPwBv0QRuLkTplg

[synchro1]

This paper calculates a 11hz cycle frequency through the Curie Point:

Thermodynamic and Relaxation Processes near Curie Point in Gadolinium
http://www.google.com/url?url=http://arxiv.org/pdf/1404.5648&rct=j&q=&esrc=s&sa=U&ei=F1gjVYHAA4qGyATUn4HYDw&ved=0CBQQFjAA&sig2=vHS-DOXv9BKOuXBcqCmBDw&usg=AFQjCNEjtHcyVSq7mjAfPwBv0QRuLkTplg

@tak22,

Thanks. Very valuable data! That puts the RPM at around 660, very close to the speed Meir Alfasi appears to be running his hot & cold water prototype in the video. 18 grams is cited as the optimum weight for Gadolinium's maximum transition frequency.

[lumen]

Looking around at Gadolinium prices it appears you can find it for $100 to $150 per pound.

Using just Gadolinium and magnet one might be able to build a room temperature heat engine but not much energy could be converted unless it was very large.

On the other hand suppose the design was changed a bit so the rotor was comprised of a few magnets with thin Gadolinium slices to conduct the magnetic field into a coil while attracting the magnets to the coil. Once inline a small current could be applied to the thin Gadolinium to heat it rapidly and become non magnetic.
The operation could provide electrical current to run itself with the environment providing only cooling.

[synchro1]

Looking around at Gadolinium prices it appears you can find it for $100 to $150 per pound.

Using just Gadolinium and magnet one might be able to build a room temperature heat engine but not much energy could be converted unless it was very large.

On the other hand suppose the design was changed a bit so the rotor was comprised of a few magnets with thin Gadolinium slices to conduct the magnetic field into a coil while attracting the magnets to the coil. Once inline a small current could be applied to the thin Gadolinium to heat it rapidly and become non magnetic.
The operation could provide electrical current to run itself with the environment providing only cooling.

@lumen,

Heating the Gadolinium slices rapidly with the coil to become magnetic sounds as though it might work alright, but cooling enough to re-grow magnetic from the environment alone may not be rapid enough for the Gadolinium to attract the next rotor magnet.

There's a difference between the adiabatic heating and cooling effect caused by exposure to a permanent field and demagnetization, and heat transfer through induction. The adiabatic temperature change is only in the range of a few degrees in the Gadolinium from PM field exposure, but the effect is nearly instantaneous as the material is forced to do work on the quantum level to sustain it's electron disorder along with cooling, for the opposite reason. This would require that the Gandolinium rotor studs be very close to the Curie point of 68º Fahrenheit in order to lose their magnetic attraction from the few degrees of heat rise from exposure to the PM field. The induction cooling effect from the environment would take much longer then the quantum cooling effect from demagnetization, and slow the rotor speed considerably.

[lumen]

@lumen,

Heating the Gadolinium slices rapidly with the coil to become magnetic sounds as though it might work alright, but cooling enough to re-grow magnetic from the environment alone may not be rapid enough for the Gadolinium to attract the next rotor magnet.

There's a difference between the adiabatic heating and cooling effect caused by exposure to a permanent field and demagnetization, and heat transfer through induction. The adiabatic temperature change is only in the range of a few degrees in the Gadolinium from PM field exposure, but the effect is nearly instantaneous as the material is forced to do work on the quantum level to sustain it's electron disorder along with cooling, for the opposite reason. This would require that the Gandolinium rotor studs be very close to the Curie point of 68º Fahrenheit in order to lose their magnetic attraction from the few degrees of heat rise from exposure to the PM field. The induction cooling effect from the environment would take much longer then the quantum cooling effect from demagnetization, and slow the rotor speed considerably.

I was thinking to avoid the large mass of Gadolinium studs so the energy involved in changing the temperature would be small.
By adding a coil it appears additional work could be recovered since the Gadolinium could conduct the field into a coil like a core but then vanish to generate power using no additional energy over what would already be required to operate the motor itself in heat.

If indeed the temperature of the Gadolinium is raised by the magnetic field which pushes itself closer to becoming non-magnetic, then already exhibits an OU effect. I would have thought that the temperature would drop entering the magnetic field so more heat would be required to become non-magnetic.

I suppose that is a critical point! It does look like the effect is greatly enhanced by adding some Copper to the Gadolinium.