Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/10659
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Luis Vitalla, Fernando | cat |
dc.contributor.author | Bartolomé, J. | cat |
dc.contributor.author | Fernández, J. F. | cat |
dc.contributor.author | Tejada Palacios, Javier | cat |
dc.contributor.author | Hernández Ferràs, Joan Manel | cat |
dc.contributor.author | Zhang, Xixiang | cat |
dc.contributor.author | Ziolo, R. F. | cat |
dc.date.accessioned | 2009-12-29T11:28:19Z | - |
dc.date.available | 2009-12-29T11:28:19Z | - |
dc.date.issued | 1997 | cat |
dc.identifier.issn | 0163-1829 | cat |
dc.identifier.uri | http://hdl.handle.net/2445/10659 | - |
dc.description.abstract | The magnetic ac susceptibility x of oriented Mn12Ac crystallites has been measured as a function of temperature, field, and frequency. The field has been applied at different values of the angle u with respect to the sample easy axis. For T55 K, the isothermal and adiabatic x limits have been determined as a function of field. For u50° and intermediate frequencies, Lorentzian-shaped peaks have been observed at magnetic field values Hn5nH1 with n50, 1, and 2 where H154.1 kOe. As u increases these maxima shift to higher fields, that satisfy Hncosu5const, and decrease in amplitude. The relaxation time t 1 follows Arrhenius’ law with respect to temperature and decreases sharply at H5Hn . The observed phenomenology unambiguously proves the existence of field-tuned tunneling between excited magnetic states which are thermally populated. At 5 K, the effective activation energy and the spin states involved in the tunneling process have been obtained. | - |
dc.format.extent | 9 p. | cag |
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.55.11448 | cat |
dc.relation.ispartof | Physical Review B, 1997, vol. 55, núm. 17, p. 11448-11456. | cat |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevB.55.11448 | - |
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 | Thermally activated and field-tuned tunneling in Mn12Ac studied by ac magnetic susceptibility | eng |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 117654 | 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 | |
---|---|---|---|---|
117654.pdf | 261.99 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.