## Proceedings of the International School of Physics "Enrico Fermi.", Volume 37N. Zanichelli, 1967 - Nuclear physics |

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Page 188

But even if they should turn out to be correct , it must be remembered that

perturbation theory already deviates from our « exact » solution for at least one to

two decades above Tc . Presence of a

...

But even if they should turn out to be correct , it must be remembered that

perturbation theory already deviates from our « exact » solution for at least one to

two decades above Tc . Presence of a

**magnetic field**( along 0z ) . Because of the...

Page 233

When the impurity moment is sufficiently large , it is not influenced much by the

additional local

perturbation is already large and is in a saturation range . Therefore we may ...

When the impurity moment is sufficiently large , it is not influenced much by the

additional local

**magnetic field**since the effective field at the impurity atom withoutperturbation is already large and is in a saturation range . Therefore we may ...

Page 343

Nuclear magnetic resonance ( NMR ) . – Consider an ensemble of noninteracting

nuclei N all with I = } , for simplicity , and all in the same external

, . Taking the direction of quantization to be that of the external field there are ...

Nuclear magnetic resonance ( NMR ) . – Consider an ensemble of noninteracting

nuclei N all with I = } , for simplicity , and all in the same external

**magnetic field**H, . Taking the direction of quantization to be that of the external field there are ...

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### Contents

LOMER Band theory and magnetism | 1 |

PHILLIPS Band theory of transition metals | 22 |

JACCARINO Studies of the hyperfine interaction in transi | 39 |

Copyright | |

19 other sections not shown

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### Common terms and phrases

alloys appearance approximation assume average band becomes bound boundary calculation charge complex computed condition conduction consider contribution correct correlation corresponding coupling curve defined density depends determined direction discussed effect electrons energy equation exchange existence expected expression fact factor Fermi Fermi level Fermi surface ferromagnetic field function given gives Hamiltonian host metal impurity atom increases integral interaction interesting lattice limit localized magnetic matrix elements means method moments normal Note observed obtained occur operator orbital perturbation phase Phys physical plane polarization poles positive possible potential present problem properties range relation replaced represent resonance scattering screening Sect shift shown similar simple single solution spin strong structure temperature theory tion transition metals usual wave wave functions write zero