Effect of stress-induced anisotropy on the noise of ring-core fluxgate

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00448911" target="_blank" >RIV/68378271:_____/15:00448911 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21230/15:00223672

Výsledek na webu

<a href="http://dx.doi.org/10.1109/TMAG.2014.2358793" target="_blank" >http://dx.doi.org/10.1109/TMAG.2014.2358793</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TMAG.2014.2358793" target="_blank" >10.1109/TMAG.2014.2358793</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of stress-induced anisotropy on the noise of ring-core fluxgate

Popis výsledku v původním jazyce

In this paper, we show how an anisotropy perpendicular to the direction of excitation is favorable to obtain low noise in fluxgate sensors. We produced ring cores by electroplating NiFe thin film (6 μ m) over a bended copper substrate. After the electroplating process, the sample was released and back-stress-induced anisotropy in the magnetic film due to magnetostriction of the material. As a result, we obtained rings with regions showing hard behavior and orthogonal regions showing soft behavior. Then, we used such rings as core for fluxgate and measured both noise and sensitivity for different orientation of the ring in the pick-up coil. When the pick-up coil covers the area with anisotropy perpendicular to the direction of excitation, the sensitivity is lower due to lower permeability, but finally, the noise is lower. On the other hand, rotating the core by 90°, the anisotropy becomes parallel to the direction of excitation and thus the sensitivity increases.

Název v anglickém jazyce

Effect of stress-induced anisotropy on the noise of ring-core fluxgate

Popis výsledku anglicky

In this paper, we show how an anisotropy perpendicular to the direction of excitation is favorable to obtain low noise in fluxgate sensors. We produced ring cores by electroplating NiFe thin film (6 μ m) over a bended copper substrate. After the electroplating process, the sample was released and back-stress-induced anisotropy in the magnetic film due to magnetostriction of the material. As a result, we obtained rings with regions showing hard behavior and orthogonal regions showing soft behavior. Then, we used such rings as core for fluxgate and measured both noise and sensitivity for different orientation of the ring in the pick-up coil. When the pick-up coil covers the area with anisotropy perpendicular to the direction of excitation, the sensitivity is lower due to lower permeability, but finally, the noise is lower. On the other hand, rotating the core by 90°, the anisotropy becomes parallel to the direction of excitation and thus the sensitivity increases.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JB - Senzory, čidla, měření a regulace

OECD FORD obor

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Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

IEEE Transactions on Magnetics

ISSN

0018-9464

e-ISSN

—

Svazek periodika

51

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

—

Kód UT WoS článku

000349446800030

EID výsledku v databázi Scopus

2-s2.0-84922751112