Changing or moving magnetic field

[Mike S.]

...you can actually rotate the magnet my rotating the piece YBCO even if the latter is perfectly round; but this is ONLY due to the fact that the flux lines are pinned in the YBCO

You've really made me wish I had one of these in hand to play with. How far can the effect be taken? If you turn it 360 degrees that it won't turn 360 degrees back... will it? If you have several pieces like this, do they interact like ordinary magnets with one another? I'm daydreaming you could use this as an analog computer to solve complex "knots" in magnetic fields but I think that is simple misunderstanding. ;)

 

[Robin07]

My two cents worth.

To my surprise, through experimentation, I have found that the "Flux tubes"/lines of force, do not move when the magnet is turned on its' axis but the field lines do move with the magnet when one flips it from N to S and/or back again. This would lead me to conclude that the N/S area are a property of the poles and not the magnet it self. Am I interpreting my visual confirmation correctly?

I've constructed a 3D magnifying glass, much like the iron fillings on a sheet of paper but in
3D (I'm not prepared to discribe the tool since I would like to put it on the market first) This tool shows clearly the findings above. Additionally I have found that lines of force can be shaped, meaning that they are able to be tightly spaced and as a result, finding stronger gauss readings, larger spacing give way to lower gauss readings. Can this be or are my readings awry?

And if I may pose one more question, or finding. In-order to shield magnetic influence, the mesh that is used will consist of weaves that intersect each other at right angles, effectively re-directing the flux along the plane of the mesh material or does it disapate the field and its' influence?