### Abstract

The ESR Bloch equations are rederived within a model which allows for finite lattice spacing. It is found this causes the usual Bloch equations to be modified. The internal field as seen by the local moments is changed from H _{ext}+ lambda M_{e} to H_{ext}+ lambda M_{e}+ alpha M_{e} where alpha = lambda ^{2}( Sigma _{i not=j}F_{1}(R_{ij})- chi _{e}^{0}) and where H_{ext} is the total external field, lambda is the molecular field constant, F_{1}(R) is the usual RKKY range function, chi _{e}^{0} the static conduction electron susceptibility and R_{ij} is the distance between the sites i and j. The effect this change has upon various limits of physical interest is investigated, compared with the previous results and the experimental data for Mg-Gd is discussed. Finally, the effect of short range correlations in dilute alloys is discussed and a set of generalized Bloch equations are proposed to account for the effects of such correlations in systems which exhibit structured resonances.

Original language | English (US) |
---|---|

Article number | 024 |

Pages (from-to) | 1535-1551 |

Number of pages | 17 |

Journal | Journal of Physics F: Metal Physics |

Volume | 4 |

Issue number | 9 |

DOIs | |

State | Published - Dec 1 1974 |

Externally published | Yes |

### ASJC Scopus subject areas

- Engineering(all)
- Physics and Astronomy (miscellaneous)
- Metals and Alloys