Magnetostriction in the mixed state of superconducting 2H-NbSe2 single crystals

Magnetostriction measurements on 2H-NbSe2 single crystals in the temperatur e range 1.5-8 K in a magnetic field up to 14 T are reported. A peak and osc illations in the measured field dependences of magnetostriction are observe d near H-c2. The reversible and irreversible components are separated and a nalyzed in the region of peak. The scaling parameters are defined, and the contribution of the elastic constants dependence on magnetic field is demon strated. The oscillatory component is discussed in connection with Landau q uantization of electronic spectrum. (C) 2001 American Institute of Physics.