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IEC 60404-5:1983 ed1.0

Заменен
Magnetic materials - Part 5: Methods of measurement of magnetic properties of magnetically hard (permanent magnet) materials — 27 стр.
Applies to magnetically hard materials only. The described method makes use of a closed loop simulating a ring. Two alternative methods are given for intrinsic coercivity up to and including 600 kA/m and one for materials with higher intrinsic coercivity (e.g. rare earth cobalt alloys).