:: : : A strong magnet would do absolutely nothing to a hard disk-the coercivity is much too high.
42.
Because of this, virtually all bank cards today are encoded on high coercivity stripes despite a slightly higher per-unit cost.
43.
Since the coercivity of the hard phase is relatively high, the moments remain unchanged so as to minimize the anisotropy and exchange energy.
44.
In these applications, " hard " magnets ( high coercivity ) like iron are desirable so the memory is not easily erased.
45.
The resistance of the crystal lattice to turning its direction of magnetization gives these compounds a very high magnetic coercivity ( resistance to being demagnetized ).
46.
In particular, a non-monotonic angular dependence of the square lattice coercivity is found to be related to disorder in the artificial spin ice system.
47.
The density of media is similar to later PC high density floppy disks, but with the original 300-oersted coercivity used by double density drives.
48.
The problem is that to store data reliably for very small bit sizes the magnetic medium must be made of a material with a very high coercivity.
49.
However, S-VHS cassettes also contain a higher grade and coercivity of tape stock to effectively record the higher video bandwidth offered by S-VHS.
50.
Alnico alloys can be magnetised to produce strong magnetic fields, and have a high coercivity ( resistance to demagnetization ), and thus make strong permanent magnets.
