Hard-disks are coated with iron oxide because it reacts to a magnetic source ! The information on a hard-disk is read and written by a magnetic 'head' which scans across the surface as the disk rotates.
It has been found that iron oxide can be magnetized if it is the right kind of iron oxide. We know that iron (III) oxide (Fe2O3) is magnetic, and it can be combined with just a little bit of other stuff to make ferrite, which is commonly used to make magnets.
To magnetize iron, you can rub a magnet along the iron in one direction multiple times. This will align the magnetic domains in the iron, making it magnetic.
The disc is a thin plastic base material coated with iron oxide. This oxide is a ferromagnetic material, meaning that if you expose it to a magnetic field it is permanently magnetized by the field.
yes all you have to do is magnetize the iron
Iron Oxide Its actually Iron(ii) Oxide there is no such thing as iron oxide.
FeO for ferrous oxide, ( iron(II) oxide); Fe2O3 for ferric oxide, (iron(III) oxide) and Fe3O4 for ferrous ferric oxide, (iron (II,III) oxide)
FeO for ferrous oxide, ( iron(II) oxide); Fe2O3 for ferric oxide, (iron(III) oxide) and Fe3O4 for ferrous ferric oxide, (iron (II,III) oxide)
You can take a piece of iron and magnetize it!
No, iron oxide is not a gas. It is a solid compound composed of iron and oxygen atoms.
We know that iron (Fe) and oxygen (O) make up iron oxide. (There is more than one oxide of iron, by the way.)
No such compound exists. If it did it would be iron VI oxide, but iron cannot reach such a high oxidation state. Perhaps you mean Fe2O3, iron III oxide.
iron oxide