Influence of interstitial and substitutional impurities upon the electron structure of iron-based alloys

Conduction electron-spin resonance is observed in paramagnetic iron-based a lloys over a temperature range of 10 K < T < 200 K. Temperature dependence of CESR g-factor in this interval reflects a change in dynamic magnetic sus ceptibility. Using CESR data we trace the influence of substitutional (Cr, Ni, Mn,...) and interstitial (N, C) impurities on D(E-F), the density of st ates at the Fermi surface. Calculations within the framework of pseudopoten tial method explain the opposite effects of N and C on D(E-F) in FCC iron a nd iron-based solid solutions. (C) 2000 Elsevier Science B.V. All rights re served.