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Magnetic susceptibility of palladium subjected to severe plastic deformation
Author(s) -
Rempel A. A.,
Gusev A. I.
Publication year - 1996
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221960125
Subject(s) - palladium , materials science , severe plastic deformation , annealing (glass) , microstructure , magnetic susceptibility , indentation hardness , crystallite , deformation (meteorology) , composite material , shear (geology) , fermi level , metallurgy , condensed matter physics , chemistry , biochemistry , physics , catalysis , quantum mechanics , electron
Abstract Over a temperature interval between 300 and 1225 K an annealing experiment is performed aiming to investigate the electronic structure of submicrocrystalline palladium by means of magnetic susceptibility. To produce submicrocrystalline structure Pd specimens severe plastic shear deformation is used. An analysis is made of the essential excess of susceptibility of deformed palladium over that of the initial polycrystalline palladium, an excessthat persists after deformed palladium had been annealed at T≤ 825 K. The excess of susceptibility is explained by the change in the density of states on the Fermi level due to atomic defects introduced by severe plastic deformation. Results of microstructure and microhardness investigations are also presented.