Gadolinium Magnet Generator.

[synchro1]

Interesting Magnet Generator:

https://www.youtube.com/watch?v=VonUp5Wicwk

[shylo]

That is interesting. I wonder how much torque you can produce.
I was trying to find a place where I could buy some or better yet salvage it.
Thanks artv

[mscoffman]

Any Gladolinium in the fridge? 

[Brian516]

I wonder if this would still work if one were to use cold and hot air to change the magnetic properties of the gd64.  That way, minimal energy could be used in the process via some sort of heat exchanger system.   For the 'heat exchanger', sunlight and dry ice could be used to heat/cool the air, and a low power pwm operated blower to move the air.   
Of course the goal would be to get more power from the rotational energy than is needed to operate the heating/cooling system. 

[synchro1]

@Brian516,

Gadolinium's Curie temperature is around room temperature. 68º Fahrenheit! 

"Unlike the other more common ferromagnetic metals, which have a curie temperature of well over five hundred Kelvin, Gadolinium's Curie temperature is around room temperature at 293 Kelvin. Besides being superconductivity at extremely low temperatures and is strongly magnetic at room temperature, Gadolinium is the only metal outside the fourth period metals that shows signs of ferromagnetic properties. Today Gadolinium alloys are used in televisions, MRI, and in microwaves but in the future its ferromagnetic properties can be used to detect cold or hot environments".

It only takes a very small change in temperature to alter Gadolinium's magnetic properties. The demonstration of rotary motion by Meir Alfasi  is awesome. We only have to fluctuate the temperature of the Gadolinium a very small amount to get it to grow strongly magnetic or completely inert. The possibilities seem endless. Think about a frigid climate. The rotor might run through a window. At 67º Fahrenheit, the element is strongly magnetic. At 68º Fahrenheit the element turns completely inert. So we only need to alter the temperature of the element by one degree to generate rotary motion.