Results 171 to 180 of about 1,473 (211)

Giant magnetoimpedance effect enhanced by thermoplastic drawing

Journal of Applied Physics, 2014
We performed thermoplastic forming (TPF) on FeCoNbB metallic glass ribbons with a supercooled liquid region exceeding 100 K, and found the sample after TPF is still completely amorphous. More importantly, the giant magnetoimpedance (GMI) effect was improved after the forming process: the maximum GMI ratio and sensitivity increased from 41% to 12.3%/Oe ...
Jian Qiang, Diana Estevez, Yaqiang Dong, Qikui Man, Chuntao Chang, Xinmin Wang, Run-Wei Li   +6 more
openaire   +1 more source

Room Temperature Giant Magnetoimpedance Effect in La0.6Bi0.1Sr0.3MnO3

ECS Solid State Letters, 2012
10.1149/2.012206ssl ; ECS Solid State Letters ; 1 ; 6 ; N21 ...
Barik, S.K., Mahendiran, R.
openaire   +1 more source

Giant Magnetoimpedance in Ti/CoP Plated Wires

MATERIALS TRANSACTIONS, 2004
The giant magnetoimpedance in Ti/CoP plated wires with various CoP thickness was investigated. There is an optimal thickness of CoP magnetic layer for obtaining a large magnetoimpedance. The frequency fz where the maximummagnetoimpedance (ΔZ/Z 0 ) m a x occurs, shifts to to low frequency with an increase of CoP thickness.
Jifan Hu, Hongwei Qin, Ling Zhang, Zhuo Wang, Minhua Jiang   +4 more
openaire   +1 more source

Giant magnetoimpedance in a cylindrical magnetic conductor

Journal of Applied Physics, 1998
A rigorous treatment of the giant magnetoimpedance (GMI) in soft magnetic wires is presented. A small-signal approximation is used for a cylindrical magnetic conductor which is saturated along its axis by a static magnetic field. The general analysis of GMI includes a discussion of the influence of different parameters on the GMI and of how the ...
D. Ménard, M. Britel, P. Ciureanu, A. Yelon   +3 more
openaire   +2 more sources

Room temperature giant magnetoimpedance in La0.7Ba0.15Sr0.15MnO3 compound

Materials Chemistry and Physics, 2010
Abstract Polycrystalline La 0.7 Ba 0.15 Sr 0.15 MnO 3 compound shows giant magnetoimpedance (GMI) effect at low field and at low frequency under a temperature range from 300 K to its Curie temperature ( T C ). A sharp change in magnetoimpedance is obtained at low fields up to 1 kG, followed by a nearly linear increase at higher field. The frequency
Soma Das, D. Dhak, M.S. Reis, V.S. Amaral, T.K. Dey   +4 more
openaire   +1 more source

Giant magnetoimpedance effect enhancement by circuit matching

Sensors and Actuators A: Physical, 2003
GMI response of amorphous wires can be greatly increased by working at resonant conditions in a LC cell. This feature of the circuit can be exploited to increase the sensibility of current GMI-based sensors while selecting the working frequency.
V. Raposo, M. Vázquez, A.G. Flores, M. Zazo, J.I. Iñiguez   +4 more
openaire   +1 more source

Magnetic sensor based on giant magnetoimpedance effect

2008 8th International Symposium on Antennas, Propagation and EM Theory, 2008
A giant magnetoimpedance (GMI) magnetic sensor is designed in the present work. Differing from the previously reported sensors, a couple of permanent magnets are applied to provide a bias magnetic field for the sensor probe which consists of commercial amorphous ribbon.
null Bing Han, null Tao Zhang
openaire   +1 more source

Giant Magnetoimpedance for Biosensing in Drug Delivery

AIP Conference Proceedings, 2008
Iron oxide (Fe3O4) non‐specific superparamagnetic nanoparticles of 30 nm size are introduced into human embryonic kidney (HEK‐293) cells by intracellular uptake. The nanoparticles are magnetised by two superimposed magnetic fields, an externally applied DC field and an AC field generated by the high‐frequency current flowing through Co64.5Fe2 ...
Vanesa Fal-Miyar, Arun Kumar, Shyam Mohapatra, Shawna Shirley, Natalie A. Frey, José M. Barandiarán, Galina V. Kurlyandskaya, Adrian Ionescu, James Anthony, Charles Bland   +9 more
openaire   +1 more source

Influence of Measurement Parameters on Giant Magnetoimpedance

2016
In this chapter, the influences of the measurement parameters (e.g. alternating current, dc magnetic field, frequency, and temperature) on giant magnetoimpedance (GMI) have been systematically analysed and clarified.
Hua-Xin Peng, Faxiang Qin, Manh-Huong Phan   +2 more
openaire   +1 more source

Single-core Giant Magnetoimpedance with AC Bias

2006 5th IEEE Conference on Sensors, 2006
Enormous improvement of the temperature stability of simple giant magnetoimpedance (GMI) sensor has been reached by means of AC bias of the sensor. Despite of reduction of the frequency range of the sensor to less than 50 Hz, the 100 Hz-current flowing through the bias coil improves the temperature offset stability by the factor of 19; from 1053 nT/K ...
M. Malatek, P. Ripka
openaire   +1 more source