Gölden, Dominik ; Zhang, Hongbin ; Radulov, Iliya ; Dirba, Imants ; Komissinskiy, Philipp ; Hildebrandt, Erwin ; Alff, Lambert (2018)
Evolution of anisotropy in bcc Fe distorted by interstitial boron.
In: Physical Review B, 97 (1)
doi: 10.1103/PhysRevB.97.014411
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The evolution of magnetic anisotropy in bcc Fe as a function of interstitial boron atoms was investigated in thin films grown by molecular beam epitaxy. The thermodynamic nonequilibrium conditions during film growth allowed one to stabilize an interstitial boron content of about 14at.% accompanied by lattice tetragonalization. The c/a ratio scaled linearly with the boron content up to a maximum value of 1.05 at 300∘C substrate growth temperature, with a room-temperature magnetization of. In contrast to nitrogen interstitials, the magnetic easy axis remained in-plane with an anisotropy of approximately −5.1×106erg/cm3. Density functional theory calculations using the measured lattice parameters confirm this value and show that boron local ordering indeed favors in-plane magnetization. Given the increased temperature stability of boron interstitials as compared to nitrogen interstitials, this study will help to find possible ways to manipulate boron interstitials into a more favorable local order.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Gölden, Dominik ; Zhang, Hongbin ; Radulov, Iliya ; Dirba, Imants ; Komissinskiy, Philipp ; Hildebrandt, Erwin ; Alff, Lambert |
| Art des Eintrags: | Bibliographie |
| Titel: | Evolution of anisotropy in bcc Fe distorted by interstitial boron |
| Sprache: | Englisch |
| Publikationsjahr: | 12 Januar 2018 |
| Verlag: | APS Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review B |
| Jahrgang/Volume einer Zeitschrift: | 97 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1103/PhysRevB.97.014411 |
| URL / URN: | https://doi.org/10.1103/PhysRevB.97.014411 |
| Kurzbeschreibung (Abstract): | The evolution of magnetic anisotropy in bcc Fe as a function of interstitial boron atoms was investigated in thin films grown by molecular beam epitaxy. The thermodynamic nonequilibrium conditions during film growth allowed one to stabilize an interstitial boron content of about 14at.% accompanied by lattice tetragonalization. The c/a ratio scaled linearly with the boron content up to a maximum value of 1.05 at 300∘C substrate growth temperature, with a room-temperature magnetization of. In contrast to nitrogen interstitials, the magnetic easy axis remained in-plane with an anisotropy of approximately −5.1×106erg/cm3. Density functional theory calculations using the measured lattice parameters confirm this value and show that boron local ordering indeed favors in-plane magnetization. Given the increased temperature stability of boron interstitials as compared to nitrogen interstitials, this study will help to find possible ways to manipulate boron interstitials into a more favorable local order. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Funktionale Materialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Theorie magnetischer Materialien |
| Hinterlegungsdatum: | 21 Mär 2018 10:03 |
| Letzte Änderung: | 06 Jul 2018 12:01 |
| PPN: | |
| Sponsoren: | We thank the German federal state of Hessen through its excellence program LOEWE “RESPONSE” for financial support. |
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