Planar Hall ring sensor for ultra-low magnetic moment sensing | Zendy

Tran Quang Hung | Zendy; F. Terki | Zendy; Souleymanne Kamara | Zendy; Kunwoo Kim | Zendy; S. Charar | Zendy; CheolGi Kim | Zendy

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Planar Hall ring sensor for ultra-low magnetic moment sensing

Author(s) -

Tran Quang Hung,

F. Terki,

Souleymanne Kamara,

Kunwoo Kim,

S. Charar,

CheolGi Kim

Publication year - 2015

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.4918534

Subject(s) - magnetic moment , sensitivity (control systems) , planar , hall effect sensor , superparamagnetism , materials science , magnetic field , moment (physics) , biosensor , magnetization , nuclear magnetic resonance , ring (chemistry) , biomagnetism , optoelectronics , condensed matter physics , magnet , physics , nanotechnology , chemistry , electronic engineering , computer science , engineering , computer graphics (images) , organic chemistry , quantum mechanics , classical mechanics

International audienceThe field sensitivity of a planar Hall effect (PHE) micro-ring type biosensor has been investigated as a function of magnetizing angle of the sensor material, for the sensing of low magnetic moment superparamagnetic labels. The field sensitivity is maximal at a magnetizing angle of α = 20°. At this optimized magnetizing angle, the field sensitivity of a PHE sensor is about 3.6 times higher than that measured at the conventional configuration, α = 90°. This optimization enables the PHE-ring sensor to detect superparamagnetic biolabels with ultra-low magnetic moments down to 4 \texttimes 10-13 emu

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