Giant magnetic anisotropy of the bulk antiferromagnets IrMn and IrMn3 from first principles
Giant magnetic anisotropy of the bulk antiferromagnets IrMn and IrMn3 from first principles
Date
2009
Authors
Editors
Journal ISSN
Electronic ISSN
ISBN
Bibliographical data
Publisher
Series
URI (citable link)
DOI (citable link)
International patent number
Link to the license
EU project number
Project
Open Access publication
Collections
Title in another language
Publication type
Journal article
Publication status
Published in
Physical Review B ; 79 (2009). - 20403
Abstract
We perform an ab initio study of the ordered phases of IrMn and IrMn3, the most widely used industrial antiferromagnets. Calculation of the form and the strength of the magnetic anisotropy allows the construction of an effective spin model, which is tested against experimental measurements regarding the magnetic ground state and the Néel temperature. Our most challenging result is the extremely strong second-order anisotropy for IrMn3 appearing in its frustrated triangular magnetic ground state, which is surprising since the ordered L12 phase has a cubic symmetry. We explain this large anisotropy by the fact that cubic symmetry is locally broken for each of the three Mn sublattices.
Summary in another language
Subject (DDC)
530 Physics
Keywords
Exchange bias,Antiferromagnet,Magnetic
Conference
Review
undefined / . - undefined, undefined. - (undefined; undefined)
Cite This
ISO 690
SZUNYOGH, László, Bence LAZAROVITS, László UDVARDI, Jerome JACKSON, Ulrich NOWAK, 2009. Giant magnetic anisotropy of the bulk antiferromagnets IrMn and IrMn3 from first principles. In: Physical Review B. 79, 20403. Available under: doi: 10.1103/PhysRevB.79.020403BibTex
@article{Szunyogh2009Giant-9241, year={2009}, doi={10.1103/PhysRevB.79.020403}, title={Giant magnetic anisotropy of the bulk antiferromagnets IrMn and IrMn3 from first principles}, volume={79}, journal={Physical Review B}, author={Szunyogh, László and Lazarovits, Bence and Udvardi, László and Jackson, Jerome and Nowak, Ulrich}, note={Article Number: 20403} }
RDF
<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/9241"> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:creator>Szunyogh, László</dc:creator> <dc:contributor>Udvardi, László</dc:contributor> <dc:creator>Nowak, Ulrich</dc:creator> <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/9241/1/giantmagnetic.pdf"/> <dc:contributor>Nowak, Ulrich</dc:contributor> <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/> <dc:contributor>Jackson, Jerome</dc:contributor> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:54:49Z</dcterms:available> <dc:rights>terms-of-use</dc:rights> <dc:creator>Jackson, Jerome</dc:creator> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/> <dc:contributor>Szunyogh, László</dc:contributor> <dc:contributor>Lazarovits, Bence</dc:contributor> <dc:creator>Lazarovits, Bence</dc:creator> <dc:creator>Udvardi, László</dc:creator> <dc:format>application/pdf</dc:format> <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/9241/1/giantmagnetic.pdf"/> <dc:language>eng</dc:language> <dcterms:bibliographicCitation>First publ. in: Physical Review B 79 (2009), 020403</dcterms:bibliographicCitation> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:54:49Z</dc:date> <dcterms:issued>2009</dcterms:issued> <dcterms:title>Giant magnetic anisotropy of the bulk antiferromagnets IrMn and IrMn3 from first principles</dcterms:title> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/9241"/> <foaf:homepage rdf:resource="http://localhost:8080/"/> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/> <dcterms:abstract xml:lang="eng">We perform an ab initio study of the ordered phases of IrMn and IrMn3, the most widely used industrial antiferromagnets. Calculation of the form and the strength of the magnetic anisotropy allows the construction of an effective spin model, which is tested against experimental measurements regarding the magnetic ground state and the Néel temperature. Our most challenging result is the extremely strong second-order anisotropy for IrMn3 appearing in its frustrated triangular magnetic ground state, which is surprising since the ordered L12 phase has a cubic symmetry. We explain this large anisotropy by the fact that cubic symmetry is locally broken for each of the three Mn sublattices.</dcterms:abstract> </rdf:Description> </rdf:RDF>
Internal note
xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter
Examination date of dissertation
Method of financing
Comment on publication
Alliance license
Corresponding Authors der Uni Konstanz vorhanden
International Co-Authors
Bibliography of Konstanz
Yes