At intermediate sizes, they display a magnetic structure called vortex.

This helps with field confinement, usually a problem in the design of magnetic structures.

That liberates some field energy into heat and can even blow open a magnetic structure.

In the case of magnetic order, neutron diffraction can be used to find the magnetic structure.

All this they witnessed on the same grid display that showed the magnetic structures.

The Beings were magnetic structures that embodied-somehow-information, memory, architectures of personality.

Neutron diffraction can therefore reveal the microscopic magnetic structure of a material.

Such materials are not considered to 'have' a magnetic structure.

They could make complex electronic components merely by concentrating on the magnetic structure of metal objects.

Thus it is desirable to employ a more powerful magnetic structure.