Magnetic Anisotropy in 2H-NbSe2 Electron Irradiated Single Crystals

Juan Bartolomé; E. Bartolomé; V.V. Eremenko; V.V. Ibulaev; Valentyna Sirenko; Yu.T. Petrusenko

doi:10.4028/www.scientific.net/SSP.152-153.470

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Magnetic Anisotropy in 2H-NbSe₂ Electron Irradiated Single Crystals

Abstract:

The anisotropic magnetic properties of the metallic layered compound with hexagonal crystal structure 2H-NbSe2 are investigated as a function of their dependence on high-energy electron irradiation. Pauli paramagnetism of free electrons is shown to dominate the magnetic susceptibility, P. The anisotropy is related to spin-orbit effects on the hybridized electronic states. Irradiation affects the density of states at the Fermi surface, increasing both P and the anisotropy. Below a threshold temperature, TS=54 K, the paramagnetic contribution, which increases with the dose, is ascribed to dangling bonds, nanotubes and nanorods generated by irradiation.