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Exchange energy term

Fig. 11. Shear modulus of Invar (Fe-36Ni), comparing pulse-echo and resonance results. The anomalous (positive-slope) behavior of this alloy is related to its large, positive volume magnetostriction. It can be explained by invoking Heisenberg-exchange-energy terms. Fig. 11. Shear modulus of Invar (Fe-36Ni), comparing pulse-echo and resonance results. The anomalous (positive-slope) behavior of this alloy is related to its large, positive volume magnetostriction. It can be explained by invoking Heisenberg-exchange-energy terms.
The fundamental justification for mixing the HF exchange energy term lies in the... [Pg.495]

In Y and Zr the 5s orbital is doubly occupied to avoid or minimize d-d repulsions, but the influence of exchange energy terms shifts the balance in the elements Nb, Mo, Tc, Ru and Rh so that the 5s orbital is singly occupied. In the elements Pd, Ag and Cd the 4d energy is distinctly lower than that of the 5s orbital, so that complete pairing occurs in Pd and then the 5s filling follows in Ag and Cd. [Pg.54]

A The discontinuity occurs in the third ionization energies of Mn and Fe. Taking into account the interelectronic repulsion term for double occupancy of a 3d orbital, and the exchange energy terms, A y y. the energy of the d- conhguration of Mn-" is given by ... [Pg.66]

This exchange energy term is only added in the TFD method. [Pg.42]

See other pages where Exchange energy term is mentioned: [Pg.1235]    [Pg.249]    [Pg.36]    [Pg.191]    [Pg.71]    [Pg.96]    [Pg.336]    [Pg.114]    [Pg.123]    [Pg.1235]    [Pg.67]    [Pg.1084]    [Pg.135]    [Pg.161]    [Pg.460]    [Pg.96]    [Pg.49]    [Pg.79]    [Pg.248]    [Pg.73]   
See also in sourсe #XX -- [ Pg.11 , Pg.151 , Pg.158 , Pg.161 , Pg.167 , Pg.199 , Pg.200 , Pg.256 , Pg.315 , Pg.316 , Pg.500 , Pg.501 , Pg.507 ]



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