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Neel temperature magnetic materials

Next, we discuss the magnetic behaviour of the materials described here as B/U is varied. The moment at T=0 in the antiferromagnetic lattice and Goodenough s (1971) conjecture for the Neel temperature are shown in Fig. 4.12. There exists at present no good theoretical description of the way TN drops as we go towards the value of B/U where the moments vanish. Near this value we do not expect an entropy /cBln 2 on going through the Neel point. With small values of there is a quantum-mechanical resonance between the two directions of the moment, and the moments on a given atom are nearly equal, so < z> is small at TN they become equal. The susceptibility should appear as in Fig. 4.13. [Pg.143]

NEEL TEMPERATURE. The transition temperature for an antiferromagnetic material. Maximal values of magnetic susceptibility, specific heat, and thermal expansion coefficient occur at the NEel temperature. [Pg.1062]

See other pages where Neel temperature magnetic materials is mentioned: [Pg.359]    [Pg.287]    [Pg.635]    [Pg.284]    [Pg.37]    [Pg.545]    [Pg.236]    [Pg.197]    [Pg.78]    [Pg.492]    [Pg.287]    [Pg.194]    [Pg.42]    [Pg.156]    [Pg.246]    [Pg.125]    [Pg.160]    [Pg.62]    [Pg.608]    [Pg.609]    [Pg.423]    [Pg.19]    [Pg.109]    [Pg.184]    [Pg.236]    [Pg.777]    [Pg.35]    [Pg.105]    [Pg.106]    [Pg.19]    [Pg.329]    [Pg.344]    [Pg.142]    [Pg.777]    [Pg.446]    [Pg.202]    [Pg.235]    [Pg.261]    [Pg.63]    [Pg.423]    [Pg.332]    [Pg.153]    [Pg.78]    [Pg.186]    [Pg.216]    [Pg.446]    [Pg.524]    [Pg.635]    [Pg.63]   
See also in sourсe #XX -- [ Pg.115 ]

See also in sourсe #XX -- [ Pg.113 ]

See also in sourсe #XX -- [ Pg.114 ]



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