ACTA

Effect of Surfaces of FeNbCuBSiP Ribbons

P. Butvin^a, B. Butvinová^a, M. Kuzminski^b, A. Ślawska-Waniewska^b, J. Sitek^c, I. Maťko^a, M. Kadlečíková^d
^aInstitute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovakia
^bInstitute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland
^cInstitute of Nuclear and Physical Engineering, STU, Ilkovičova 3, 812 19 Bratislava, Slovakia
^dInstitute of Electronics and Photonics FEI, STU, Ilkovičova 3, 812 19 Bratislava, Slovakia

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Boron was partially substituted by phosphorus (3 at.%) in two Si-poor Fe-Nb-Cu-B-Si Finemets. Mostly non-significant changes were observed after vacuum annealing at 500°C, whereas equivalent Ar annealing resulted in significantly better soft-magnetic properties, which suffer from compressive surfaces stress. Possibly by hampering surface crystallization, the substitution eased the surfaces stress and reduced undesired off-axis anisotrophy at the cost of limiting the useful annealing temperature.

DOI: 10.12693/APhysPolA.126.152
PACS numbers: 75.30.Gw, 75.50.Tt, 75.60.Ch