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- Persson, Anders,1982-Uppsala universitet,Mikrosystemteknik,ÅSTC (author)
Low-frequency noise in planar Hall effect bridge sensors
- Article/chapterEnglish2011
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- Elsevier,2011
- printrdacarrier
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- LIBRIS-ID:oai:DiVA.org:uu-163740
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-163740URI
- https://doi.org/10.1016/j.sna.2011.09.014DOI
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- Language:English
- Summary in:English
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- The low-frequency characteristics of planar Hall effect bridge sensors are investigated as function of the sensor bias current and the applied magnetic field. The noise spectra reveal a Johnson-like spectrum at high frequencies, and a 1/f-like excess noise spectrum at lower frequencies, with a knee frequency of around 400 Hz. The 1/f-like excess noise can be described by the phenomenological Hooge equation with a Hooge parameter of γH = 0.016. The detectivity is shown to depend on the total length, width and thickness of the bridge branches. The detectivity is improved by the square root of the length increase. Moreover, the detectivity is shown to depend on the amplitude of the applied magnetic field, revealing a magnetic origin to part of the 1/f noise.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Materialteknik hsv//swe
- ENGINEERING AND TECHNOLOGY Materials Engineering hsv//eng
- Magnetoresistance
- Planar Hall effect
- Low-frequency noise
- Detectivity
- Teknisk fysik med inriktning mot mikrosystemteknik
- Engineering Science with specialization in Microsystems Technology
- Teknisk fysik med inriktning mot fasta tillståndets fysik
- Engineering Science with specialization in Solid State Physics
Added entries (persons, corporate bodies, meetings, titles ...)
- Bejhed, Rebecca SUppsala universitet,Fasta tillståndets fysik(Swepub:uu)restj676 (author)
- Nguyen, HugoUppsala universitet,Mikrosystemteknik,ÅSTC(Swepub:uu)hugonguy (author)
- Gunnarsson, KlasUppsala universitet,Fasta tillståndets fysik(Swepub:uu)klgun011 (author)
- Dalslet, Bjarke TDept of Micro- and Nanotechnology, Technical University of Denmark, DTU Nanotech, Kongens Lyngby, Danmark (author)
- Oesterberg, Frederik WDept of Micro- and Nanotechnology, Technical University of Denmark, DTU Nanotech, Kongens Lyngby, Danmark (author)
- Hansen, Mikkel FDept of Micro- and Nanotechnology, Technical University of Denmark, DTU Nanotech, Kongens Lyngby, Danmark (author)
- Svedlindh, PeterUppsala universitet,Fasta tillståndets fysik(Swepub:uu)petesved (author)
- Uppsala universitetMikrosystemteknik (creator_code:org_t)
Related titles
- In:Sensors and Actuators A-Physical: Elsevier171:2, s. 212-2180924-42471873-3069
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