. do you know if the concept was taken up on other tanks model , there was a big doodahh about zimmerite , in spite of the fact that magnetic mine are not mentionned often as a cause of destruction , while improved armor was always the main concern of the front troops .
As far as I know, only the Germans had a magnetic AT mine using the shaped charge principle. However, the Germans were apparently worried that other countries would adopt same. Therefore, they developed zimmerite paste. While it takes ungodly nerve to run up to a tank and plant one on it, the magnetic mine can be precisely placed and will be the exact distance and angle from the armor in order to get max penetration. The same can't be said for fausts, bazookas, etc.
The problem with that is it's pretty clear that they didn't understand exactly what the distance to get max penetration was at the time. A good chance they would not have had an adequate stand off.