Modelling and Measurement of Magnetically Soft Nanowire Arrays for Sensor Applications

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 prepare...
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Autor*in:	Pavel Ripka [verfasserIn] Vaclav Grim [verfasserIn] Mehran Mirzaei [verfasserIn] Diana Hrakova [verfasserIn] Janis Uhrig [verfasserIn] Florian Emmerich [verfasserIn] Christiane Thielemann [verfasserIn] Jiri Hejtmanek [verfasserIn] Ondrej Kaman [verfasserIn] Roman Tesar [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2020

Schlagwörter:	magnetic nanowires soft magnetic wires magnetic sensors

Übergeordnetes Werk:	In: Sensors - MDPI AG, 2003, 21(2020), 1, p 3
Übergeordnetes Werk:	volume:21 ; year:2020 ; number:1, p 3

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/s21010003

Katalog-ID:	DOAJ034166254

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spelling	10.3390/s21010003 doi (DE-627)DOAJ034166254 (DE-599)DOAJ693caff17e2445019cb9e3411e38cfc1 DE-627 ger DE-627 rakwb eng TP1-1185 Pavel Ripka verfasserin aut Modelling and Measurement of Magnetically Soft Nanowire Arrays for Sensor Applications 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier 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. Using this tool, we have shown that as a core of magnetic sensors, nanowires are efficiently employed only together with microcoils with diameter comparable to the nanowire length. magnetic nanowires soft magnetic wires magnetic sensors Chemical technology Vaclav Grim verfasserin aut Mehran Mirzaei verfasserin aut Diana Hrakova verfasserin aut Janis Uhrig verfasserin aut Florian Emmerich verfasserin aut Christiane Thielemann verfasserin aut Jiri Hejtmanek verfasserin aut Ondrej Kaman verfasserin aut Roman Tesar verfasserin aut In Sensors MDPI AG, 2003 21(2020), 1, p 3 (DE-627)331640910 (DE-600)2052857-7 14248220 nnns volume:21 year:2020 number:1, p 3 https://doi.org/10.3390/s21010003 kostenfrei https://doaj.org/article/693caff17e2445019cb9e3411e38cfc1 kostenfrei https://www.mdpi.com/1424-8220/21/1/3 kostenfrei https://doaj.org/toc/1424-8220 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2111 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 21 2020 1, p 3
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allfieldsSound	10.3390/s21010003 doi (DE-627)DOAJ034166254 (DE-599)DOAJ693caff17e2445019cb9e3411e38cfc1 DE-627 ger DE-627 rakwb eng TP1-1185 Pavel Ripka verfasserin aut Modelling and Measurement of Magnetically Soft Nanowire Arrays for Sensor Applications 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier 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. Using this tool, we have shown that as a core of magnetic sensors, nanowires are efficiently employed only together with microcoils with diameter comparable to the nanowire length. magnetic nanowires soft magnetic wires magnetic sensors Chemical technology Vaclav Grim verfasserin aut Mehran Mirzaei verfasserin aut Diana Hrakova verfasserin aut Janis Uhrig verfasserin aut Florian Emmerich verfasserin aut Christiane Thielemann verfasserin aut Jiri Hejtmanek verfasserin aut Ondrej Kaman verfasserin aut Roman Tesar verfasserin aut In Sensors MDPI AG, 2003 21(2020), 1, p 3 (DE-627)331640910 (DE-600)2052857-7 14248220 nnns volume:21 year:2020 number:1, p 3 https://doi.org/10.3390/s21010003 kostenfrei https://doaj.org/article/693caff17e2445019cb9e3411e38cfc1 kostenfrei https://www.mdpi.com/1424-8220/21/1/3 kostenfrei https://doaj.org/toc/1424-8220 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2111 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 21 2020 1, p 3
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callnumber-first	T - Technology
author	Pavel Ripka
spellingShingle	Pavel Ripka misc TP1-1185 misc magnetic nanowires misc soft magnetic wires misc magnetic sensors misc Chemical technology Modelling and Measurement of Magnetically Soft Nanowire Arrays for Sensor Applications
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topic_title	TP1-1185 Modelling and Measurement of Magnetically Soft Nanowire Arrays for Sensor Applications magnetic nanowires soft magnetic wires magnetic sensors
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title	Modelling and Measurement of Magnetically Soft Nanowire Arrays for Sensor Applications
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title_full	Modelling and Measurement of Magnetically Soft Nanowire Arrays for Sensor Applications
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title_sort	modelling and measurement of magnetically soft nanowire arrays for sensor applications
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title_auth	Modelling and Measurement of Magnetically Soft Nanowire Arrays for Sensor Applications
abstract	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. Using this tool, we have shown that as a core of magnetic sensors, nanowires are efficiently employed only together with microcoils with diameter comparable to the nanowire length.
abstractGer	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. Using this tool, we have shown that as a core of magnetic sensors, nanowires are efficiently employed only together with microcoils with diameter comparable to the nanowire length.
abstract_unstemmed	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. Using this tool, we have shown that as a core of magnetic sensors, nanowires are efficiently employed only together with microcoils with diameter comparable to the nanowire length.
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title_short	Modelling and Measurement of Magnetically Soft Nanowire Arrays for Sensor Applications
url	https://doi.org/10.3390/s21010003 https://doaj.org/article/693caff17e2445019cb9e3411e38cfc1 https://www.mdpi.com/1424-8220/21/1/3 https://doaj.org/toc/1424-8220
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up_date	2024-07-03T21:47:10.915Z
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Modelling and Measurement of Magnetically Soft Nanowire Arrays for Sensor Applications

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