Simulation of Chemical Order–Disorder Transitions Induced Thermally at the Nanoscale for Magnetic Recording and Data Storage

Lade...
Vorschaubild
Dateien
Zu diesem Dokument gibt es keine Dateien.
Datum
2020
Autor:innen
Polushkin, Nikolay I.
Bunyaev, Sergey A.
Bondarenko, Artem V.
He, Miao
Shugaev, Maxim V.
Kakazei, Gleb N.
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
URI (zitierfähiger Link)
ArXiv-ID
Internationale Patentnummer
EU-Projektnummer
DFG-Projektnummer
Projekt
Open Access-Veröffentlichung
Sammlungen
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
ACS Applied Nano Materials. ACS Publications. 2020, 3(8), pp. 7668-7677. ISSN 2574-0970. eISSN 2574-0970. Available under: doi: 10.1021/acsanm.0c01281
Zusammenfassung

In memory nanodevices based on phase changes induced thermally, the process of information recording is a reversible transition between the structurally ordered (crystalline) and disordered (amorphous) phases that can provide a difference in the physical properties of these two states, for example, in optical reflectivity, electrical resistivity, or magnetic permeability. It is of particular interest to explore whether the chemical disorder is erasable, rewritable, and scalable in solid alloys upon their exposure to short heating pulses. Here, we model this process by assuming second-order phase transitions between chemically ordered and disordered states in the atomic lattice. Our simulations reveal that nanosecond laser irradiation concentrated within a nanoscale spot on the sample surface is able to induce reversible chemical-order (B2)-disorder (A2) transformations (CODTs) in intermetallic Fe-rich FexAl1–x alloys that exhibit the disorder-induced ferromagnetism. A realization of this concept would provide an alternative approach to current technologies for magnetic recording and data storage, in which the written bits are represented by regions with not a different polarity but with a different magnitude of magnetization. We envision that the proposed approach can be realized with tools used currently for heat-assisted magnetic recording (HAMR), for example, with a near-field transducer (NFT). A specific design for CODT-based magnetic recording media is proposed.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
530 Physik
Schlagwörter
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690POLUSHKIN, Nikolay I., Thomas B. MÖLLER, Sergey A. BUNYAEV, Artem V. BONDARENKO, Miao HE, Maxim V. SHUGAEV, Johannes BONEBERG, Gleb N. KAKAZEI, 2020. Simulation of Chemical Order–Disorder Transitions Induced Thermally at the Nanoscale for Magnetic Recording and Data Storage. In: ACS Applied Nano Materials. ACS Publications. 2020, 3(8), pp. 7668-7677. ISSN 2574-0970. eISSN 2574-0970. Available under: doi: 10.1021/acsanm.0c01281
BibTex
@article{Polushkin2020-08-28Simul-51121,
  year={2020},
  doi={10.1021/acsanm.0c01281},
  title={Simulation of Chemical Order–Disorder Transitions Induced Thermally at the Nanoscale for Magnetic Recording and Data Storage},
  number={8},
  volume={3},
  issn={2574-0970},
  journal={ACS Applied Nano Materials},
  pages={7668--7677},
  author={Polushkin, Nikolay I. and Möller, Thomas B. and Bunyaev, Sergey A. and Bondarenko, Artem V. and He, Miao and Shugaev, Maxim V. and Boneberg, Johannes and Kakazei, Gleb N.}
}
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/123456789/51121">
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-09-30T07:13:38Z</dcterms:available>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:creator>Polushkin, Nikolay I.</dc:creator>
    <dc:creator>Bunyaev, Sergey A.</dc:creator>
    <dc:creator>Bondarenko, Artem V.</dc:creator>
    <dcterms:issued>2020-08-28</dcterms:issued>
    <dcterms:title>Simulation of Chemical Order–Disorder Transitions Induced Thermally at the Nanoscale for Magnetic Recording and Data Storage</dcterms:title>
    <dc:creator>He, Miao</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-09-30T07:13:38Z</dc:date>
    <dc:creator>Boneberg, Johannes</dc:creator>
    <dc:contributor>Polushkin, Nikolay I.</dc:contributor>
    <dc:contributor>Bunyaev, Sergey A.</dc:contributor>
    <dc:contributor>He, Miao</dc:contributor>
    <dc:contributor>Bondarenko, Artem V.</dc:contributor>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/51121"/>
    <dc:contributor>Kakazei, Gleb N.</dc:contributor>
    <dc:contributor>Shugaev, Maxim V.</dc:contributor>
    <dc:creator>Möller, Thomas B.</dc:creator>
    <dc:contributor>Möller, Thomas B.</dc:contributor>
    <dc:creator>Kakazei, Gleb N.</dc:creator>
    <dc:creator>Shugaev, Maxim V.</dc:creator>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:language>eng</dc:language>
    <dc:contributor>Boneberg, Johannes</dc:contributor>
    <dcterms:abstract xml:lang="eng">In memory nanodevices based on phase changes induced thermally, the process of information recording is a reversible transition between the structurally ordered (crystalline) and disordered (amorphous) phases that can provide a difference in the physical properties of these two states, for example, in optical reflectivity, electrical resistivity, or magnetic permeability. It is of particular interest to explore whether the chemical disorder is erasable, rewritable, and scalable in solid alloys upon their exposure to short heating pulses. Here, we model this process by assuming second-order phase transitions between chemically ordered and disordered states in the atomic lattice. Our simulations reveal that nanosecond laser irradiation concentrated within a nanoscale spot on the sample surface is able to induce reversible chemical-order (B2)-disorder (A2) transformations (CODTs) in intermetallic Fe-rich Fe&lt;sub&gt;x&lt;/sub&gt;Al&lt;sub&gt;1–x&lt;/sub&gt; alloys that exhibit the disorder-induced ferromagnetism. A realization of this concept would provide an alternative approach to current technologies for magnetic recording and data storage, in which the written bits are represented by regions with not a different polarity but with a different magnitude of magnetization. We envision that the proposed approach can be realized with tools used currently for heat-assisted magnetic recording (HAMR), for example, with a near-field transducer (NFT). A specific design for CODT-based magnetic recording media is proposed.</dcterms:abstract>
  </rdf:Description>
</rdf:RDF>
Interner Vermerk
xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter
Kontakt
URL der Originalveröffentl.
Prüfdatum der URL
Prüfungsdatum der Dissertation
Finanzierungsart
Kommentar zur Publikation
Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Ja
Begutachtet
Unbekannt