ACADSTAFF UGM

CREATION
Title : Magnetic Nanoparticle Detection Using Wheatstone Bridge Giant Magnetoresistance (GMR) Sensor with Double CoFeB Spin-Valve Thin
Author :

Dr.Eng. Edi Suharyadi, S.Si., M.Eng. (1) TAUFIKUDDIN A (2)

Date : 4 2021
Keyword : Giant Magnetoresistance (GMR), Magnetic Nanoparticle, Wheatstone, Spin valve Giant Magnetoresistance (GMR), Magnetic Nanoparticle, Wheatstone, Spin valve
Abstract : The Wheatstone bridge-giant magnetoresistance (GMR) sensor with single and double spin valve thin film was successfully developed for potential biomolecular detection. The GMR sensor with spin valves structure of [Ta (2nm)/IrMn (10nm)/CoFe (3nm)/Cu (2,2nm)/CoFeB (10nm)/Ta (5nm)] was fabricated using DC Magnetic Sputtering method. The Fe3O4 magnetic nanoparticles were synthesized by the co-precipitation method as a magnetic label. The magnetic properties of the Fe3O4 nanoparticles measured are the saturation magnetization (Ms) of 77.7 emu/g, remanence magnetization (Mr) of 7.7 emu/g, and coercivity (Hc) of 49 Oe. The X-ray diffraction pattern showed the inverse cubic spinel structure with an average crystal size of about 20.1 nm. Fe3O4 magnetic nanoparticles with various concentrations were used to be detected using a GMR sensor. The output voltage of the GMR sensor with the single and double spin-valve increased from 1.7 to 3.9 mV and 2.9 to 5.3 mV with the increase of the Fe3O4 concentration from 0 to 20 mg/mL, respectively.
Group of Knowledge :
Level : Internasional
Status :
Published
Document
No Title Document Type Action
1 Taufik_2020.pdf
Document Type : [PAK] Sertifikat Seminar
[PAK] Sertifikat Seminar View
2 KEM_884_348.pdf
Document Type : [PAK] Full Dokumen
[PAK] Full Dokumen View
3 L1_Proceeding_Septemberl_Edi-SUHARYADI.pdf
Document Type : Dokumen Pendukung Karya Ilmiah (Hibah, Publikasi, Penelitian, Pengabdian)
Dokumen Pendukung Karya Ilmiah (Hibah, Publikasi, Penelitian, Pengabdian) View