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http://hdl.handle.net/2445/10537
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DC Field | Value | Language |
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dc.contributor.author | Illa i Tortós, Xavier | cat |
dc.contributor.author | Vives i Santa-Eulàlia, Eduard | cat |
dc.contributor.author | Planes Vila, Antoni | cat |
dc.date.accessioned | 2009-12-28T08:53:35Z | - |
dc.date.available | 2009-12-28T08:53:35Z | - |
dc.date.issued | 2002 | cat |
dc.identifier.issn | 0163-1829 | cat |
dc.identifier.uri | http://hdl.handle.net/2445/10537 | - |
dc.description.abstract | We present a simple model that allows hysteresis loops with exchange bias to be reproduced. The model is a modification of the $T=0$ random-field Ising model driven by an external field and with synchronous local relaxation dynamics. The main novelty of the model is that a certain fraction f of the exchange constants between neighboring spins is enhanced to a very large value ${J}_{E}.$ The model allows the dependence of the exchange bias and other properties of the hysteresis loops to be analyzed as a function of the parameters of the model: the fraction f of enhanced bonds, the amount of the enhancement ${J}_{E},$ and the amount of disorder, which is controlled by the width $\ensuremath{\sigma}$ of the Gaussian distribution of the random fields. | - |
dc.format.extent | 7 p. | cat |
dc.format.mimetype | application/pdf | eng |
dc.language.iso | eng | eng |
dc.publisher | The American Physical Society | eng |
dc.relation.isformatof | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.66.224422 | cat |
dc.relation.ispartof | Physical Review B, 2002, vol. 66, núm. 22, p. 224422-1-224422-7 | eng |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevB.66.224422 | - |
dc.rights | (c) The American Physical Society, 2002 | eng |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Histèresi | cat |
dc.subject.classification | Model d'Ising | cat |
dc.subject.classification | Vidres de spin | cat |
dc.subject.other | Hysteresis | eng |
dc.subject.other | Ising model | eng |
dc.subject.other | Spin glasses | eng |
dc.title | Metastable random-field Ising model with exchange enhancement: A simple model for exchange bias | eng |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 513164 | cat |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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513164.pdf | 93.65 kB | Adobe PDF | View/Open |
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