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GLOSSARY
Hot-pressed Mn-Zn ferrite
This ferrite, which has excellent magnetic properties, is manufactured by sintering under high pressure.Initial magnetic permeability is 30,000;porosity is less than 0.1%.Due to its high density and strength, hot-pressed Mn-Zn ferrite is suitable for high-precision machine processing and examples of its applications include magnetic recording/playback heads for audio or video tape recorders, computers and measuring apparatus.
Physical properties of HPF (Mn-Zn):
Initial permeability (at lkHz)  30,000
Porosity                                      0.1%
Micro-Vicker's hardness      690`710