Dipolar ordering in crystals of Mn12 Ac

Abstract

Ordering in realistic elongated box-shape crystals of the molecular magnet Mn_12 Ac is investigated with the site-resolved mean-field approximation that does not assume a uniform ordering. It is shown that ferromagnetic ordering should not occur in crystals with the aspect ratio up to 12. Instead, for the aspect ratio about 6, the inner and outer regions of the crystal order in different directions, uniformly along its length. Finding ordering temperature by extrapolating the inverse susceptibility curve does not provide a correct T_C.

4 Phys. Rev. pages, 3 figures, submitted to PRB

References in corpus (8)

• Ordering of dipolar Ising crystals
• Magnetic long-range order induced by quantum relaxation in single-molecule magnets
• Tunable dipolar magnetism in high-spin molecular clusters
• Long-range ferromagnetism of Mn12 acetate single-molecule magnets under a transverse magnetic field
• Magnetic dipolar ordering and relaxation in the high-spin molecular cluster compound Mn6
• Experimental determination of the dipolar field in Mn12-acetate
• Dipolar Ordering and Quantum Dynamics of Domain Walls in Mn-12 Acetate
• Pure and Random-Field Quantum Criticality in the Dipolar Ising Model: Theory of $M{n}_{12}$ acetates

Cited by in corpus (3)

• Quantum deflagration and supersonic fronts of tunneling in molecular magnets
• Turbulent fronts of quantum detonation in molecular magnets
• Experimental determination of the Weiss temperature of Mn${}_{12}$-ac and Mn${}_{12}$-ac-MeOH