Sheet magnets?

Question

Can you get neodymium magnets in sheet form and if so are sheet magnets weaker or stronger than other ones(disc, cube etc)?

Answer 1

The physical geometry of sheet magnets prevents them from being very strong. The polarity of such magnets is such that there are alternating points of alternating north and south polarity spaced in a square array every inch or two.

Horseshoe magnets are the strongest for a given material, especially those in which the pole faces are big, closely spaced, and the air gap represents only a relatively small part of the magnetic path. Horseshoe magnets in which the pole faces are parallel to a single plane are weaker and bar magnets are weaker still. The strongest magnets are toroids (doughnut shapes) magnetized in a pattern so that the entire magnetic path is within the magnetic material. However, such magnets have little or no external magnetic field and won't pick up any metal to speak of.

Answer 2

I have never seen strong magnets in sheet form. It seems they need a little bit of depth in order to be extra strong. I find that sheet magnets still do pretty well. I have a sheet magnet outdoors with a thick piece of waterproof paper under it. It's held up for a year and still going strong.
.