Magnetic Properties of Bulk and Thin Nd2Fe14B Films after Corrosion Action
V. Constantin a, E.I. Neacşu a, A.M. Popescu a, A. Galyas b, O. Demidenkob and K. Yanushkevich b
a"Ilie Murgulescu" Institute of Physical Chemistry of the Romanian Academy, Splaiul Independentei 202, Bucharest, Romania
bScientific-Practical Materials Research Center NAS, P. Brovki Str. 19, Minsk, Belarus
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The corrosion action for bulk and thin Nd2Fe14B films magnets in different corrosion media was studied. The thin Nd-Fe-B films of 100 nm ≤ d ≤ 1000 nm were deposited on glass substrate by "flash" evaporation method. The structure and microstructure of the samples were studied by X-ray diffraction analysis, scanning electron microscopy. The temperature dependence of the magnetization before and after corrosion action was carried out by ponderomotive method in the temperature range 80 ≤ T ≤ 800 K. It is shown that the specific magnetizations of the thin Nd-Fe-B films with d ≥ 1000 nm are comparable to those measured for the powder samples. The values of the coercive and saturation fields were determined from the hysteresis loops measurements.

DOI: 10.12693/APhysPolA.127.368
PACS numbers: 61.05.cp, 75.50.Bb, 75.50.Vv, 75.70.-i