EHF–RESONANCE STUDIES OF ENERGY GAP IN REENTRANT MAGNETS

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Abstract

An EHF-resonance technique of millimeter wavelength band was used for the study of reentrant magnetic systems (FepNi1−p)77B13Si10 (p=0.09; 0.10) at low temperatures (down to 0.3K) and high applied magnetic fields. The linear dependence of magnetization on the temperature that characterizes the spin-glass state in such reentrant systems in strong magnetic field was discovered. The energy of localized excitations characterizing spin-glass state was estimated.

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