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Quantum fluctuations of the total spin in molecular nanomagnets: Evidence from torque and specific heat
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7.All exchange integrals between nearest neighbors are found to be nearly equal to 0.47 meV, apart from the four between ions located on two of the four sides of the grid, whose values are 0.33 meV. Next-nearest-neighbor exchange interactions can be neglected. The local crystal-field can be approximately described by with Finally, The intracluster dipole–dipole interaction has been evaluated within the point–dipole approximation.
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