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cond-mat.stat-mech2002★ 224 cited
Surface contribution to the anisotropy of magnetic nanoparticles
D. A. Garanin, H. Kachkachi
We calculate the contribution of the Neel surface anisotropy to the effective anisotropy of magnetic nanoparticles of spherical shape cut out of a simple cubic lattice. The effecti…
cond-mat.stat-mech2002★ 13 cited
Effect of exchange interaction on superparamagnetic relaxation
H. Kachkachi
We use Langer's approach to calculate the reaction rate of a system of two (classical) spins interacting via the exchange coupling in a magnetic field , with uniaxial anisot…