Microwave magnetic excitations in U-type hexaferrite Sr4CoZnFe36O60 ceramics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00598754" target="_blank" >RIV/68378271:_____/24:00598754 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/24:00598754 RIV/68407700:21340/24:00378635

Výsledek na webu

<a href="https://hdl.handle.net/11104/0356368" target="_blank" >https://hdl.handle.net/11104/0356368</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0222910" target="_blank" >10.1063/5.0222910</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microwave magnetic excitations in U-type hexaferrite Sr4CoZnFe36O60 ceramics

Popis výsledku v původním jazyce

Microwave (MW) transmission, absorption, and reflection loss spectra of the ferrimagnetic U-type hexaferrite Sr4CoZnFe36O60 ceramics were studied from 100 MHz to 35 GHz at temperatures between 10 and 390 K. Nine MW magnetic excitations with anomalous behavior near ferrimagnetic phase transitions were revealed. Six magnetic modes are assigned to dynamics of the magnetic domain walls and inhomogeneous magnetic structure of the ceramics, to the ferromagnetic resonance (FMR), and to the higher-frequency magnons. The high-frequency FMR component critically slows down to phase transition. At room temperature, FMR splitting and suppression of the higher-frequency modes were revealed under the weak bias field (300–700 Oe). The high number of magnetic excitations observed in the MW region confirms the suitability of using hexaferrite Sr4CoZnFe36O60 ceramics as MW absorbers, shielding materials and highly tunable filters.

Název v anglickém jazyce

Microwave magnetic excitations in U-type hexaferrite Sr4CoZnFe36O60 ceramics

Popis výsledku anglicky

Microwave (MW) transmission, absorption, and reflection loss spectra of the ferrimagnetic U-type hexaferrite Sr4CoZnFe36O60 ceramics were studied from 100 MHz to 35 GHz at temperatures between 10 and 390 K. Nine MW magnetic excitations with anomalous behavior near ferrimagnetic phase transitions were revealed. Six magnetic modes are assigned to dynamics of the magnetic domain walls and inhomogeneous magnetic structure of the ceramics, to the ferromagnetic resonance (FMR), and to the higher-frequency magnons. The high-frequency FMR component critically slows down to phase transition. At room temperature, FMR splitting and suppression of the higher-frequency modes were revealed under the weak bias field (300–700 Oe). The high number of magnetic excitations observed in the MW region confirms the suitability of using hexaferrite Sr4CoZnFe36O60 ceramics as MW absorbers, shielding materials and highly tunable filters.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

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

136

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

073904

Kód UT WoS článku

001300477400006

EID výsledku v databázi Scopus

2-s2.0-85202946918