Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/10656
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Hernández Ferràs, Joan Manel | cat |
dc.contributor.author | Zhang, Xixiang | cat |
dc.contributor.author | Luis Vitalla, Fernando | cat |
dc.contributor.author | Tejada Palacios, Javier | cat |
dc.contributor.author | Friedman, Jonathan R. | cat |
dc.contributor.author | Sarachik, M. P. | cat |
dc.contributor.author | Ziolo, R. F. | cat |
dc.date.accessioned | 2009-12-29T11:25:57Z | - |
dc.date.available | 2009-12-29T11:25:57Z | - |
dc.date.issued | 1997 | cat |
dc.identifier.issn | 0163-1829 | cat |
dc.identifier.uri | http://hdl.handle.net/2445/10656 | - |
dc.description.abstract | We have measured the dc magnetization at low temperatures of tetragonal crystals of Mn12 acetate complex [Mn12O12[CH3COO]16[H2O]4], a material composed of a large ~Avogadro’s! number of identical magnetic molecules, each of spin 10. Exchange coupling between Mn ions within each molecule is very strong, while the interaction between molecules is negligible. A large, uniaxial anisotropy ~;60 K! gives rise to a doubly degenerate ground state corresponding to spin projections of 610 along the easy axis ~c axis!; hysteretic behavior is found below a blocking temperature Tb;3 K. Based on measurements of oriented crystallites at temperatures between 1.7 and 3.2 K, we report strong evidence for resonant tunneling of the magnetization: periodic steps in the hysteresis loop, and periodic marked increases in the magnetic relaxation rate at the magnetic fields corresponding to these steps. A total of seven increases in the relaxation rate were found within the temperature range of our experiments with a period of 0.46 T; we suggest that many more such steps would be found at lower temperatures. We attribute these observations to thermally assisted resonant tunneling of the magnetization and propose a detailed model to account for our results. | - |
dc.format.extent | 8 p. | cat |
dc.format.mimetype | application/pdf | eng |
dc.language.iso | eng | eng |
dc.publisher | The American Physical Society | cat |
dc.relation.isformatof | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.55.5858 | cat |
dc.relation.ispartof | Physical Review B, 1997, vol. 55, núm. 9, p. 5858-5865. | cat |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevB.55.5858 | - |
dc.rights | (c) The American Physical Society, 1997 | cat |
dc.source | Articles publicats en revistes (Física de la Matèria Condensada) | - |
dc.subject.classification | Materials magnètics | cat |
dc.subject.classification | Propietats magnètiques | cat |
dc.subject.other | Magnetic properties | eng |
dc.subject.other | Magnetic materials | eng |
dc.title | Evidence for resonant tunneling of magnetization in Mn12 acetate complex | eng |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 117653 | cat |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
117653.pdf | 179.18 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.