Engineered magnetization and exchange stiffness in direct-write Co-Fe nanoelements

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APU139527" target="_blank" >RIV/00216305:26620/21:PU139527 - isvavai.cz</a>

Výsledek na webu

<a href="https://aip.scitation.org/doi/10.1063/5.0036361" target="_blank" >https://aip.scitation.org/doi/10.1063/5.0036361</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0036361" target="_blank" >10.1063/5.0036361</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Engineered magnetization and exchange stiffness in direct-write Co-Fe nanoelements

Popis výsledku v původním jazyce

Media with engineered magnetization are essential building blocks in magnonics, spintronics, and superconductivity. However, the established thin film and lithographic techniques insufficiently suit the realization of planar components with on-demand-tailored magnetization in the lateral dimension. Here, we demonstrate the engineering of the magnetic properties of CoFe-based nanodisks fabricated by the mask-less technique of focused electron beam-induced deposition (FEBID). The material composition in the nanodisks is tuned in situ via the e-beam waiting time in the FEBID process and their post-growth irradiation with Ga ions. The saturation magnetization M-s and exchange stiffness A of the disks are deduced from perpendicular spin-wave resonance measurements. The achieved M-s variation in the broad range from 720emu/cm(3) to 1430emu/cm(3) continuously bridges the gap between the M-s values of widely used magnonic materials such as Permalloy and CoFeB. The presented approach paves the way toward nanoscale 2D and 3D systems with controllable space-varied magnetic properties.

Název v anglickém jazyce

Engineered magnetization and exchange stiffness in direct-write Co-Fe nanoelements

Popis výsledku anglicky

Media with engineered magnetization are essential building blocks in magnonics, spintronics, and superconductivity. However, the established thin film and lithographic techniques insufficiently suit the realization of planar components with on-demand-tailored magnetization in the lateral dimension. Here, we demonstrate the engineering of the magnetic properties of CoFe-based nanodisks fabricated by the mask-less technique of focused electron beam-induced deposition (FEBID). The material composition in the nanodisks is tuned in situ via the e-beam waiting time in the FEBID process and their post-growth irradiation with Ga ions. The saturation magnetization M-s and exchange stiffness A of the disks are deduced from perpendicular spin-wave resonance measurements. The achieved M-s variation in the broad range from 720emu/cm(3) to 1430emu/cm(3) continuously bridges the gap between the M-s values of widely used magnonic materials such as Permalloy and CoFeB. The presented approach paves the way toward nanoscale 2D and 3D systems with controllable space-varied magnetic properties.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Physics Letters

ISSN

0003-6951

e-ISSN

1077-3118

Svazek periodika

118

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

„022408-1“-„022408-5“

Kód UT WoS článku

000610512100001

EID výsledku v databázi Scopus

—