%0 Journal Article
%T Reduced thermal dependence of the sensitivity of a planar Hall sensor
%+ Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM)
%+ Laboratoire Synthèse et Catalyse [Tiaret] (LSCT)
%+ Physique de l'Exciton, du Photon et du Spin (PEPS)
%+ University of Manchester [Manchester]
%+ Laboratoire de Structure et Application des Matériaux Moléculaires (SEA2M)
%+ Daegu Gyeongbuk Institute of Science and Technology (DGIST)
%+ Technische Fakultät, Universität Bielefeld
%+ SPINtronique et TEchnologie des Composants (SPINTEC)
%+ Laboratoire de chimie de coordination (LCC)
%A Mahfoud, Mohamed
%A Tran, Quang-Hung
%A Wane, Sidina
%A Ngo, Duc-The
%A Belarbi, El Habib
%A Boukra, Abdelaziz
%A Kim, Mijin
%A Elzwawy, Amir
%A Kim, Cheolgi
%A Reiss, Guenter
%A Diény, Bernard
%A Bousseksou, Azzedine
%A Terki, Ferial
%Z This work was supported by the Algerian-French program PROFAS B+ of the Ministry of Higher Education and Scientific Research, Directorate of Cooperation and inter-university exchange, the French Institute of Algeria (Algeria), the Scientific and Innovative Research Investment Program, Prematuration HEMOSENS-2017-006697 of the Occitanie Region (France), and the DGIST R&D Program of the Ministry of Science, ICT and Future Planning (17-BT-02) (South Korea).
%< avec comité de lecture
%@ 0003-6951
%J Applied Physics Letters
%I American Institute of Physics
%V 115
%N 7
%P 072402
%8 2019-08-12
%D 2019
%R 10.1063/1.5110671
%Z Chemical SciencesJournal articles
%X The ability to stabilize the sensitivity of a magnetoresistance sensor in unstable thermal environments is a key parameter in many high precision measurements. Here, we propose a method to stabilize the sensitivity of a highly sensitive and low noise magnetic sensor based on a planar Hall Effect crossed junction. The stability is achieved by controlling the interplay between Zeeman energy, exchange bias energy, and anisotropy energy as a function of the temperature of the sensor stack comprising a trilayer structure NiFe/Cu/IrMn (10/0.12/10 nm). The high thermal stability of the sensor sensitivity of 4.5 ± 0.15 × 10−3 V/A/T/K is achieved when the external magnetic field is set around ±2 ± 0.04 mT and the applied current is fixed at 20 mA in the temperature range of 110 K–360 K. This method improves the magnetic sensor detection by about an order of magnitude, enabling its deployment in various research fields, particularly to study magnetic properties of small quantities of magnetic materials toward the detection of single magnetic objects, which was impossible before.
%G English
%L hal-02283659
%U https://hal.umontpellier.fr/hal-02283659
%~ CEA
%~ UNIV-TLSE3
%~ UGA
%~ CNRS
%~ ENSC-MONTPELLIER
%~ INPG
%~ ICG
%~ L2C
%~ INAC-SPINTEC
%~ DSM-INAC
%~ LCC
%~ DSV
%~ INC-CNRS
%~ MIPS
%~ CHIMIE
%~ UNIV-MONTPELLIER
%~ CEA-DRF
%~ IRIG
%~ CEA-GRE
%~ TEST-HALCNRS
%~ UGA-COMUE
%~ TOULOUSE-INP
%~ UNIV-UT3
%~ UT3-INP
%~ UT3-TOULOUSEINP
%~ UM-2015-2021
%~ ICT-CHIMIE