In ferromagnetic materials, the atoms' magnetic moments are all aligned in the same direction. |
To achieve this, the tip of an AFM cantilever is coated with a ferromagnetic layer a few nanometers thick. |
Lead, not being a ferromagnetic material, cannot shield or shunt magnetic fields in this way. |
As these ferromagnetic substances move within the magnetic field of the permanent magnet, it causes the flux through the bobbin to change. |
Most materials are not ferromagnetic, but there are a variety of magnetic effects that other materials exhibit. |
Recently, the Grenoble group discovered that uranium rhodium germanium is a ferromagnetic superconductor at ambient pressure. |