Development of planar fluxgate magnetic microsensors

• Grant number: 09/09163-4
• Support Opportunities: Regular Research Grants
• Start date: February 01, 2010
• End date: January 31, 2012
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Marcelo Mulato
• Grantee: Marcelo Mulato
• Host Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil

Abstract

Fluxgates are vectorial magnetometers with high sensitivity, only lower than SQUIDs, but operating at ambient temperature. Originaly these sensors have been developed with size and power consumption incompatible with a lot of technologies, restricting its use. To overcome this fact, several types of microfluxgates have been proposed in the literature making use of the thin film technology. Based in early workswhich determined the best parameters for NiFe and NiFeCo alloys eletrodeposition, this project intend to build functional sensors using planar technology in order to test the ferromagnetic material and also innovative sensor layouts. Firstly, only macro scale devices will be created for simplicity but, unlike the conventional macrofluxgates, this will be directly scalonable. After a systematic characterization of each device, only the best in performance will be miniaturized. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

HEIMFARTH, TOBIAS; MULATO, MARCELO. Planar fluxgate layouts using a single layer of coils. SENSORS AND ACTUATORS A-PHYSICAL, v. 214, p. 20-24, AUG 1 2014. (09/09163-4)

PEDROZA DIAS MELLO, HUGO JOSE NOGUEIRA; HEIMFARTH, TOBIAS; MULATO, MARCELO. Influence of the physical-chemical properties of polyaniline thin films on the final sensitivity of varied field effect sensors. Materials Chemistry and Physics, v. 160, p. 257-263, JUN 15 2015. (14/09562-4, 09/09163-4)

PEDROZA DIAS MELLO, HUGO JOSE NOGUEIRA; MULATO, MARCELO. Optochemical sensors using electrodeposited polyaniline films: Electrical bias enhancement of reflectance response. SENSORS AND ACTUATORS B-CHEMICAL, v. 213, p. 195-201, JUL 5 2015. (14/09562-4, 09/09163-4)