It is true that AME's sensitive material must be separated from the read heads by a nonmagnetic
In addition, it has a pleasing color, is nonmagnetic
and takes a variety of finishes.
The seeming ability to defy gravity is what delights most people, but the demonstration also highlights a more subtle idea that is often overlooked in everyday life--that many objects considered nonmagnetic
do, in fact, possess magnetic properties.
Fujitsu's Synthetic Ferrimagnetic media (SFM) employ alternating layers of magnetic and nonmagnetic
materials that result in improved thermal stability.
And since they're nonmagnetic
, data can't be erased accidentally.
Scientists believe that the effect results from charge "scattering" at the interface between magnetic and nonmagnetic
surfaces in multilayered materials, but they do not fully understand the phenomenon.
But previous attempts to detect ferromagnetism in clusters of normally nonmagnetic
metals had failed.
You simply turn on a magnetic field and you've got yourself a magnetic material; turn off the field and it's nonmagnetic
," says physicist Michael J.
They succeeded in making these antiparallel materials by alternating very thin, nonmagnetic
spacing layers between thin layers of magnetic material.
The third species, which congregates in mulberry-like colonies, uses a puzzling combination of two mineral types -- greigite and nonmagnetic
Also, the material is clearly a metal and it's nonmagnetic
, so it ought to have a superconducting-transition temperature,' says Ven Vechten.