Saturday, May 23, 2015

New magnetic material

The following post was prompted by the article linked below.

Non-Joulian magnets! Remember that designation. It refers to a new class of magnetic material that, unlike what was originally discovered by James Prescott Joule, don't change in shape, but change in volume. A feature that, apparently, makes them prone to much lower heat profiles, able to be made of non-rare earth metals, and able to provide magnetic affect at much smaller sizes. Talk about impressive!.

This sort of thing gets me to thinking again on what the possibility might be of making magnetic lattice materials, such as wire bundles, that could provide significantly magnified tensile strength with the application of a current. Perhaps such strength far surpassing what even carbon nanotubes alone might ultimately be able to provide.

A time will come when this will be important for things other than, say, space elevators. In order to delve into the world of relativistic mass we are going to have to come up with a way to create mass accelerator rings that will need to withstand quite extraordinary centrifugal forces. Perhaps this new magnetic material will provide important options in that regard.

A microscopic view of periodic magnetic cells created in iron-gallium alloy that appear to be responsible for the strange non-Joulian magnetostriction

New class of "non-Joulian magnets" have potential to revolutionize electronics

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