eprintid: 2211
rev_number: 9
eprint_status: archive
userid: 280
dir: disk0/00/00/22/11
datestamp: 2016-12-31 10:21:25
lastmod: 2016-12-31 10:21:25
status_changed: 2016-12-31 10:21:25
type: article
metadata_visibility: show
creators_name: Le, Khac Quynh
creators_name: Bui, Dinh Tu
creators_name: Dang, Xuan Dang
creators_name: Dong, Quoc Viet
creators_name: Le, Thi Hien
creators_name: Do, Thi Huong Giang
creators_name: Nguyen, Huu Duc
creators_id: buidinhtu@vnu.edu.vn
creators_id: lehien@vnu.edu.vn
creators_id: giangdth@vnu.edu.vn
creators_id: ducnh@vnu.edu.vn
title: Detection of magnetic nanoparticles using simple AMR sensors in Wheatstone bridge
ispublished: pub
subjects: Phys
subjects: isi
divisions: fac_physic
abstract: Wheatstone bridges incorporating a serially connected ensemble of simple AMR elements of Ni80Fe20 film were produced, targeting an application of a pinned magnetic field along the sensing magnetoresistor length. For the optimal dimension, the magnetoresistive element with length l  4 µm, width 150 µm and thickness 5 nm still shows a rather modest AMR ratio (of about 0.85% only). However, the resulting bridge exhibits a sensitivity as large as 2.15 mV/Oe. This is according to a standard sensitivity of 1.80 mV/V/Oe and a detection limit better than 10_6 emu, which is almost doubled with respect to that in the typical commercial AMR devices and is comparable with Permalloy based PHE sensor. This is suitable to detect the superparamagnetic fluid of 50 nm-Fe3O4-chitosan.
date: 2016-04
date_type: published
publisher: Elsevier
official_url: http://www.journals.elsevier.com/journal-of-science-advanced-materials-and-devices/
full_text_status: public
publication: Journal of Science: Advanced Materials and Devices
volume: 1
pagerange: 98-102
refereed: TRUE
citation:   Le, Khac Quynh and Bui, Dinh Tu and Dang, Xuan Dang and Dong, Quoc Viet and Le, Thi Hien and Do, Thi Huong Giang and Nguyen, Huu Duc  (2016) Detection of magnetic nanoparticles using simple AMR sensors in Wheatstone bridge.  Journal of Science: Advanced Materials and Devices, 1 .   pp. 98-102.      
document_url: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/2211/1/Quynh%20L%20K%202016.pdf