Počet záznamů: 1

Modelling and measurement of magnetically soft nanowire arrays for sensor applications

SYSNO ASEP	0541691
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Modelling and measurement of magnetically soft nanowire arrays for sensor applications
Tvůrce(i)	Ripka, P. (CZ) Grim, V. (CZ) Mirzaei, M. (CZ) Hraková, D. (CZ) Uhrig, J. (DE) Emmerich, F. (DE) Thielemann, C. (DE) Hejtmánek, Jiří (FZU-D)_{RID, ORCID} Kaman, Ondřej (FZU-D)_{RID, ORCID} Tesař, Roman (FZU-D)_{RID, ORCID}
Celkový počet autorů	10
Číslo článku	3
Zdroj.dok.	Sensors. - : MDPI Roč. 21, č. 1 (2021)
Poč.str.	17 s.
Jazyk dok.	eng - angličtina
Země vyd.	CH - Švýcarsko
Klíč. slova	magnetic nanowires ; soft magnetic wires ; magnetic sensors
Vědní obor RIV	JJ - Ostatní materiály
Obor OECD	Nano-materials (production and properties)
CEP	EF16_019/0000760 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
Způsob publikování	Open access
Institucionální podpora	FZU-D - RVO:68378271
UT WOS	000606671000001
EID SCOPUS	85098529616
DOI	10.3390/s21010003
Anotace	Soft magnetic wires and microwires are currently used for the cores of magnetic sensors. Due to their low demagnetization, they contribute to the high sensitivity and the high spatial resolution of fluxgates, Giant Magnetoimpedance (GMI), and inductive sensors. The arrays of nanowires can be prepared by electrodeposition into predefined pores of a nanoporous polycarbonate membrane. While high coercivity arrays with square loops are convenient for information storage and for bistable sensors such as proximity switches, low coercivity cores are needed for linear sensors. We show that coercivity can be controlled by the geometry of the array: increasing the diameter of nanowires (20 µm in length) from 30 nm to 200 nm reduced the coercivity by a factor of 10, while the corresponding decrease in the apparent permeability was only 5-fold. Finite element simulation of nanowire arrays is important for sensor development, but it is computationally demanding. While an array of 2000 wires can be still modelled in 3D, this is impossible for real arrays containing millions of wires. We have developed an equivalent 2D model, which allows us to solve these large arrays with acceptable accuracy.
Pracoviště	Fyzikální ústav
Kontakt	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Rok sběru	2022
Elektronická adresa	http://hdl.handle.net/11104/0319222

Počet záznamů: 1