## Abstract

An analysis is presented of the correlation between electron-dislocation scattering and electron-impurity scattering and its effect on the specific dislocation resistivity rho _{D}/N_{D} of metals. It is shown that, in contrast to the usual assumption, rho _{D}/N_{D} is not independent of the dislocation density N_{D}. For very large values of N_{D}, of the order of 10^{9} cm^{-2} for pure samples, rho _{D}/N_{D} is indeed independent of N_{D}. However, for lower values of N_{D}, of the order of 10^{7}-10^{8} cm^{-2}, the calculation yields that rho _{D}/N_{D} depends on N_{D}, varying approximately as C_{1}-C _{2}lg(N_{D}/N_{D}^{th}) where N _{D}^{th} is a threshold value. The variation of rho _{D}/N_{D} with N_{D} is found to be about an order of magnitude for aluminium and for the noble metals. An experiment is proposed for measuring this predicted dependence of rho _{D}/N_{D} on N _{D}. The few available experimental data for the N_{D} dependence of rho _{D}/N_{D} for Cu and Be are found to be in close agreement with the present theory.

Original language | English |
---|---|

Article number | 004 |

Pages (from-to) | 1749-1763 |

Number of pages | 15 |

Journal | Journal of Physics F: Metal Physics |

Volume | 11 |

Issue number | 9 |

DOIs | |

State | Published - 1981 |

Externally published | Yes |