How are energy product and magnet strength related?
Magnet strength needs to be defined. Magnet strength actually is a measure of total flux in the area of interest. If greater holding strength is desired, then more Br is needed, and since holding force is proportional to B^2, the improvement will be proportional to the ratio of Br’s squared. In a spectrometer application, charged particle deflection will be directly proportional to the Br increase. If resistance to demagnetization is the reason for wanting “greater strength”, then a magnet with a higher Hci value is needed. Even if the high Hci magnet shows lower open circuit flux density, it could provide more under operating conditions.
