Compression of a magnetic material leads to a change in its magnetic properties. We examine this effect using spin-lattice dynamics for the special case of bcc-Fe, using both single- and poly-crystalline Fe and a bicontinuous nanofoam structure. We find
1. It is important to note that almost all the deposited layers have identical thicknesses between samples I and III under constant conditions; the only difference is the thickness of the inserted NM spacer layer. Nevertheless, the magnetic property of the free layer exhibits an unusual change ...
It is shown that in the ground state isolated Fe 2+ spin is only directed along the host spins. Other projections are possible in magnetic field H; then the giant impurity magnetic moment enhancement takes place due to inhomogeneous turn of host spins around the impurity one. Such projections...
We find the general structure of second-rank matrix antisymmetric tensor operators and explicitly give some matrix elements of finite transforma- tions of the proper Lorentz group for finite-dimensional irreducible representations (±1/2, l1); such elements were previously found only for unitary (...
Accordingly some properties of our spin glass model will not depend on the details of the probability distribution of ~ and t/. For instance, the transition paramagnet-spin glass is only determined by their second moment, whatever their distribution (i.e., flcJ~ 2>: 1 where fi~ is the ...
The phason also contributes, although much more weakly, in the vicinity of the zone cen- ter, with a pole whose weight vanishes as the wave vector ap- proaches zero. For the nematic, there is no divergent gapless contribution, and the gapless mode appears only at the zone center. The ...
In the LM regime, the lineshape depends on εfeσ and U only through their influence on TK, and hence ALσM(ν) is a universal function of ν and TK. This is illustrated in Fig. 4 for five lineshapes, shown in the lower left panel, corresponding to different choices of εfeσ and...
On the other hand, the spin exchange rate for strong exchange between the radical and paramagnetic ion is virtually independent of the magnetic moment of the paramagnetic ion (31). Therefore, to discriminate between these two relaxation mechanisms it was important to compare the values of ⌬(1...
octahedral site, resulting in a net magnetic moment of mneaagrnlyet4it μeBi.s It is generally considered that the orbital component of this net magnetic nearly completely compensated by this symmetry, resulting in a very small moment in bulk net contribution to the total magnetization6–8. ...
In the context of device applications, the speed of the transition between the molecular magnetic states is a key parameter for a figure of merit [8]. In characterizing switching of the molecular spin state, the intrinsic switching speed of spin crossover complexes is of paramount importance to...