FIELD: electrical engineering and instrumentation engineering. SUBSTANCE: alloy has, in mass praseodymium 36-42; boron 0.7-0.8; copper 0.3-2.0; aluminum 0.15-0.5 or gallium 0.6-1.2; iron the rest. Alloy has coercitive force by 30-35% higher, than other alloys, that allows to increase magnetic field intensity of magnetic systems and to decrease irreversible changes of magnetic flux during heating. EFFECT: increased magnetic field intensity of magnetic systems and decrease of irreversible changes of magnetic flux during heating. 2 tbl
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