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dc.creatorThomaz, M. T.-
dc.creatorRojas, O.-
dc.creatorCorrêa-Silva, E. V.-
dc.date.accessioned2020-11-13T15:21:29Z-
dc.date.available2020-11-13T15:21:29Z-
dc.date.issued2011-
dc.identifier.citationTHOMAZ, M. T.; ROJAS, O.; CORRÊA-SILVA, E. V. Qualitative comparison of the thermodynamics of Mn12-ac and Fe8 molecule magnets for dβ ~ 0.031. Modern Physics Letters B, [S.l.], v. 25, n. 15, p. 1281-1291, 2011. DOI: 10.1142/S0217984911026115.pt_BR
dc.identifier.urihttps://www.worldscientific.com/doi/abs/10.1142/S0217984911026115pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/45475-
dc.description.abstractThe magnetization and the specific heat of two single molecule magnets (SMM) with spin-10, Mn12-ac and Fe8, are compared for Dβ ~ 0.031. The rhombic term in the Fe8 molecule makes the x-component of its magnetization to be larger than that of the Mn12-ac molecule. The axial symmetry of the Mn12-ac favors the z-component of its magnetization, in comparison to the Fe8 molecule. For T ≳ 18 K, the specific heat of the Mn12-ac is large (80%, at most) than that of the Fe8, at the same temperature. The corrections from the S = 9 excited states of these SMM's do not invalidate our results. An unexpected result occurs when the angle between the easy-axis and the external magnetic field equals π/4: the aforementioned percentage difference of the specific heat reaches 3% for D β ≲ 0.025 and h/k ∈[1.93, 2.04], when they are compared at distinct temperatures . This small percentage difference also happens for the average specific heat of both SMM's at those temperatures and h/DMn ∈ [1.97, 2.1].pt_BR
dc.languageen_USpt_BR
dc.publisherWorld Scientific Publishingpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceModern Physics Letters Bpt_BR
dc.subjectQuantized spin modelspt_BR
dc.subjectSingle molecule magnetspt_BR
dc.subjectTransverse anisotropypt_BR
dc.subjectSkew magnetic fieldpt_BR
dc.subjectQuantum statistical mechanicspt_BR
dc.titleQualitative comparison of the thermodynamics of Mn12-ac and Fe8 molecule magnets for dβ ~ 0.031pt_BR
dc.typeArtigopt_BR
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