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Author Topic: Gadolinium Magnet Generator.  (Read 136466 times)

nestor89

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Re: Gadolinium Magnet Generator.
« Reply #135 on: April 19, 2015, 07:00:19 PM »
The temperature only has to rise a tiny amount for the cube to unfasten and freewheel. All the rotor needs is a correctly spaced cooler Gadolinium cube in front of it to push the demagnetized cube free of the field and voilà! Perpetual motion.

No. Even in paramagnetic state is is still be drawn by a permanent magnet. If the Curie temperature is reached the cube will not be unfasten. Ferromagnetism is stronger as paramagnetism but but the paramagnetism of gd is quite strong. I heated up gd (99,99 % pure)  up to 60 degrees C and it was still attacted by a neodym magnet. Reaching the Curie temperature of Gd does not mean that there is no magetic attraction at all any more.

nestor89

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Re: Gadolinium Magnet Generator.
« Reply #136 on: April 19, 2015, 07:04:28 PM »
Interesting Magnet Generator:

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

I think that the idea might work. However I am not sure whether the whell in the video is accelarted by the water flow (like a water mill).

nestor89

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Re: Gadolinium Magnet Generator.
« Reply #137 on: April 19, 2015, 07:06:11 PM »
The Gadolinium rotor block would be drawn into the permanent magnet field at precisely 68º Fahrenheit by the magnetic attraction. This force would power the rotor. Initially, the block would heat up, and traveling at just the right speed, the preliminary rise in temperature might be sufficient enough to briefly push it just above the Currie point to turn the block non-magnetic

Paramagnetic <> non-magnetic

profitis

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Re: Gadolinium Magnet Generator.
« Reply #138 on: April 19, 2015, 08:22:21 PM »
Nestor'Ferromagnetism is stronger as paramagnetism but but the paramagnetism of gd is quite strong.'

If you use a weaker magnet then its not a problem.it will drop the gadi

profitis

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Re: Gadolinium Magnet Generator.
« Reply #139 on: April 19, 2015, 08:27:43 PM »
Tinselkoala'Be sure to set up a "control experiment" at the same time'

He can just use a nickel coin of similar size and weight.I got these things to become dead-still and I mean dead-still in my cupboard in my room using short-string cotton with nickel coins

ekimtoor1

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Re: Gadolinium Magnet Generator.
« Reply #140 on: April 19, 2015, 09:33:46 PM »
@tinselkoala. Yes I did just that I also hung a steel washer about the Sam weight and suspended it within enough ring mags to get approximately the same magnetic setup as with the GD. I also hung a small strip of paper. The washer stayed dead steady but I tied it up a little differently sio I still suspect the thread. The paper shows little movement. I set this up turned on the camera and left the room for about 30 minutes after turning off all my fans and the hvac.

Perhaps I'll post that video and let you all decide what it shows.

mscoffman

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Re: Gadolinium Magnet Generator.
« Reply #141 on: April 19, 2015, 09:51:59 PM »
I can verify that the null case of a small horseshoe magnet and a ferrous component becomes quietus
while the horseshoe magnet suspends itself at 45deg. on a support string.  It's Lentz Law that damps
out all motion of the magnet. No energy equals no motion.

..S..MarkSCoffman

ekimtoor1

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Re: Gadolinium Magnet Generator.@ms off an
« Reply #142 on: April 19, 2015, 10:42:03 PM »
@mscoffman yes I observed the same with steel and GD suspended at an angle .

synchro1

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Re: Gadolinium Magnet Generator.
« Reply #143 on: April 20, 2015, 05:30:24 PM »
No. Even in paramagnetic state is is still be drawn by a permanent magnet. If the Curie temperature is reached the cube will not be unfasten. Ferromagnetism is stronger as paramagnetism but but the paramagnetism of gd is quite strong. I heated up gd (99,99 % pure)  up to 60 degrees C and it was still attacted by a neodym magnet. Reaching the Curie temperature of Gd does not mean that there is no magetic attraction at all any more.

It sounds like you're dealing with a gadolinium alloy.

ekimtoor1

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Re: Gadolinium Magnet Generator.
« Reply #144 on: April 20, 2015, 05:45:12 PM »
It sounds like you're dealing with a gadolinium alloy.

My sample says 99.999 pure and it absolutely will not detach from a neo under any temp (up to neo's curie).  I spent some time reading up on GD more carefully this morning and I don't think it ever becomes non-magnetic.  It is either ferromagnetic or extremely paramagnetic with the Curie point marking the end of ferromagnetism and the beginning of extreme paramegnetism.  GD is so paramagnetic above 68F that I cannot tell the difference between the two states.

So before any more can be done here, we must answer this question:

1. Is there in fact a point of non-magnetism (which would actually be extremely weak paramagnetism since everything is either ferro or para) when GD passes from ferromagnetic to paramagnetic?

2. If so, how long does GD remain non-magnetic?

profitis

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Re: Gadolinium Magnet Generator.
« Reply #145 on: April 20, 2015, 06:05:21 PM »
QuoteEkim'1. Is there in fact a point of non-magnetism (which would actually be extremely weak paramagnetism since everything is either ferro or para) when GD passes from ferromagnetic to paramagnetic?

Yes.use a weak magnet to see it

QuoteEkim'2. If so, how long does GD remain non-magnetic?

Permanent above its curie

ekimtoor1

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Re: Gadolinium Magnet Generator.
« Reply #146 on: April 20, 2015, 06:14:35 PM »
"Yes.use a weak magnet to see it"

The fact that you can see it with a weak magnet could also mean the paramagnetic state of GD is weaker than it's ferromagnetic state, therefore it falls off the weak magnet, but is in fact still paramagnetic and will be attracted to a neo.  This is what I think is happening.


"Permanent above its curie"

This is not true according to everything I have read.  It becomes paramagnetic, not non-magnetic.



profitis

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Re: Gadolinium Magnet Generator.
« Reply #147 on: April 20, 2015, 06:28:42 PM »
'The fact that you can see it with a weak magnet could also mean the paramagnetic state of GD is weaker than it's ferromagnetic state, therefore it falls off the weak magnet, but is in fact still paramagnetic and will be attracted to a neo.  This is what I think is happening.'

Yes precisely.BUT ignore this for swing-experiments because there still is a giagantic temperature change in the gadi regardless of the neo.


'This is not true according to everything I have read.  It becomes paramagnetic, not non-magnetic.'

Yes but you won't get it to fall off a neo in direct contact.increase the distance from the neo by a seperator-block of wood and then it will fall off the neo

ekimtoor1

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Re: Gadolinium Magnet Generator.
« Reply #148 on: April 20, 2015, 06:36:06 PM »
I need a laser thermometer so I can see the GD changing temp in response to a magnetic field.

Spacing the neo would have the same effect as a weaker magnet.
I have not observed any state of non-magnetism in GD so far.
If there is one, it's miniscule and will be very hard to exploit.
I think GD is either ferromagnetic or paramagnetic at all times.

I'm starting to be suspicious of that video with the GD rotor.

profitis

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Re: Gadolinium Magnet Generator.
« Reply #149 on: April 20, 2015, 06:55:24 PM »
'I'm starting to be suspicious of that video with the GD rotor.'

Lol nooo no sir.let's trust the encyclopedias and meantime I'm going to figure out a easy chemical test that you can do to see if that is really gadolinium that arrived in the post.