Electron spin resonance on a 2D van der Waals CrBr3 uniaxial ferromagnet

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43927516" target="_blank" >RIV/60461373:22310/23:43927516 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.aip.org/aip/jap/article/133/3/034301/2867665" target="_blank" >https://pubs.aip.org/aip/jap/article/133/3/034301/2867665</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0117865" target="_blank" >10.1063/5.0117865</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electron spin resonance on a 2D van der Waals CrBr3 uniaxial ferromagnet

Popis výsledku v původním jazyce

We report on the electron spin resonance (ESR) properties of a van der Waals bulk CrBr3 single crystal. Angular-and temperature-dependent studies are performed in the range of the critical temperature for ferromagnetic order. The angular-dependent data enable the determination of a strong uniaxial magnetic anisotropy constant, K, with the easy axis of magnetization being parallel to the crystallographic c axis. The peak-to peak ESR linewidth below the Curie temperature shows contributions from the term (3 cos(2) theta(-1))(2), thus suggesting the occurrence of long wavelength (q -&gt; 0) modes of spin fluctuations typical for 2D systems. Finally, we analyze the temperature dependence of the double integrated ESR intensity, resonance field, and linewidth for the direction of the magnetic field parallel and perpendicular to the c easy axis. We determine Weiss&apos;s constant and the thermal dependence of K and observe the crossover region from linewidth narrowing to broadening approaching the critical temperature. Finally, we discuss our findings in the view of the potential application of CrBr3 in perpendicular magnetic tunneling junctions.

Název v anglickém jazyce

Electron spin resonance on a 2D van der Waals CrBr3 uniaxial ferromagnet

Popis výsledku anglicky

We report on the electron spin resonance (ESR) properties of a van der Waals bulk CrBr3 single crystal. Angular-and temperature-dependent studies are performed in the range of the critical temperature for ferromagnetic order. The angular-dependent data enable the determination of a strong uniaxial magnetic anisotropy constant, K, with the easy axis of magnetization being parallel to the crystallographic c axis. The peak-to peak ESR linewidth below the Curie temperature shows contributions from the term (3 cos(2) theta(-1))(2), thus suggesting the occurrence of long wavelength (q -&gt; 0) modes of spin fluctuations typical for 2D systems. Finally, we analyze the temperature dependence of the double integrated ESR intensity, resonance field, and linewidth for the direction of the magnetic field parallel and perpendicular to the c easy axis. We determine Weiss&apos;s constant and the thermal dependence of K and observe the crossover region from linewidth narrowing to broadening approaching the critical temperature. Finally, we discuss our findings in the view of the potential application of CrBr3 in perpendicular magnetic tunneling junctions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/LTAUSA19034" target="_blank" >LTAUSA19034: Dvoudimenzionální nanomateriály pro aplikace v elektronice</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF APPLIED PHYSICS

ISSN

0021-8979

e-ISSN

1089-7550

Svazek periodika

133

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

—

Kód UT WoS článku

000918075300002

EID výsledku v databázi Scopus

2-s2.0-85146614661