Engineering topics
Publications and source records attributed to Callen, E..
We describe an electronic model for the low temperature transition in magnetite, in which the average number of electrons on a site is non-integral. The solution of the one-dimensional problem is reviewed, and the connection of the model with the Verwey ordering is discussed. Some of the implication of the three dimensional problem are discussed.
Crystal time reversal symmetry for macroscopic laws determination, discussing spontaneous electric and magnetic moments and magnetically ordered systems
Metal-semiconductor transition in magnetite described on band model with electrons breaking symmetry by ordering in self induced Coulomb potential
Magnetoelastic spin Hamiltonians applied to magnetostriction of Yb in YIG
Quantum structure in ferromagnetic metals dielectric function, noting anomalous helicon and magnon propagation modes in uniform magnetic field