Observation of nonlinear FMR in amorphous microwires using standard x-band spectrometer

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00469170" target="_blank" >RIV/68378271:_____/15:00469170 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0267013" target="_blank" >http://hdl.handle.net/11104/0267013</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Observation of nonlinear FMR in amorphous microwires using standard x-band spectrometer

Popis výsledku v původním jazyce

Experimental technique for investigation of nonlinear ferromagnetic resonance in thin metallic wires is described. It uses a simple home-made X-band FMR spectrometer with static magnetic field and microwave electric field parallel to the wire. Electric polarization of the wire induces microwave current and large circumferential AC magnetic field on the wire surface. This reduces the critical power for the onset of nonlinear effects. Moreover, in Fe-rich amorphous metals the condition of coincidence of the main and the subsidiary resonances is satisfied at X-band frequencies which further reduces the critical field for the onset of insta-bility. Then the microwave power of few mW is sufficient for observation of nonlinear FMR. The nonlinear resonance curves of very thin wires show well distinguished fine structure with the period inversely proportional to the wire diameter.

Název v anglickém jazyce

Observation of nonlinear FMR in amorphous microwires using standard x-band spectrometer

Popis výsledku anglicky

Experimental technique for investigation of nonlinear ferromagnetic resonance in thin metallic wires is described. It uses a simple home-made X-band FMR spectrometer with static magnetic field and microwave electric field parallel to the wire. Electric polarization of the wire induces microwave current and large circumferential AC magnetic field on the wire surface. This reduces the critical power for the onset of nonlinear effects. Moreover, in Fe-rich amorphous metals the condition of coincidence of the main and the subsidiary resonances is satisfied at X-band frequencies which further reduces the critical field for the onset of insta-bility. Then the microwave power of few mW is sufficient for observation of nonlinear FMR. The nonlinear resonance curves of very thin wires show well distinguished fine structure with the period inversely proportional to the wire diameter.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

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

Projekt

<a href="/cs/project/GAP102%2F12%2F2177" target="_blank" >GAP102/12/2177: Nanostrukturované magneticky měkké materiály pro sensory</a><br>

Návaznosti

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

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Journal of Electrical Engineering - Elektrotechnický časopis

ISSN

1335-3632

e-ISSN

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Svazek periodika

66

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

4

Strana od-do

70-73

Kód UT WoS článku

000389765100017

EID výsledku v databázi Scopus

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