Fabrication and soft magnetic properties of rapidly quenched Co-Fe-B-Si-Nb ultra-thin amorphous ribbons

Masood, Ansar; Baghbaderani, Hasan Ahmadian; Ström, Valter; Stamenov, Plamen; McCloskey, Paul; Mathúna, S. Cian Ó; Kulkarni, Santosh

doi:10.1016/j.jmmm.2019.03.079

Cited by 22 publications

(4 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, mass-produced ribbons used as biosensing elements in commercial products would require individual characterization and adjustment due to differences in sensitivity. Furthermore, as the operating frequency increases, the formation of eddy currents leads to a sharp increase in heat losses, which can deteriorate the magnetic properties of most commercial ribbons, for which the thickness is in the range of tens of microns [ 56 , 57 ].…”

Section: Early Sensor Prototypes (2000–2016)mentioning

confidence: 99%

Magnetoimpedance Biosensors and Real-Time Healthcare Monitors: Progress, Opportunities, and Challenges

et al. 2022

View full text Add to dashboard Cite

A small DC magnetic field can induce an enormous response in the impedance of a soft magnetic conductor in various forms of wire, ribbon, and thin film. Also known as the giant magnetoimpedance (GMI) effect, this phenomenon forms the basis for the development of high-performance magnetic biosensors with magnetic field sensitivity down to the picoTesla regime at room temperature. Over the past decade, some state-of-the-art prototypes have become available for trial tests due to continuous efforts to improve the sensitivity of GMI biosensors for the ultrasensitive detection of biological entities and biomagnetic field detection of human activities through the use of magnetic nanoparticles as biomarkers. In this review, we highlight recent advances in the development of GMI biosensors and review medical devices for applications in biomedical diagnostics and healthcare monitoring, including real-time monitoring of respiratory motion in COVID-19 patients at various stages. We also discuss exciting research opportunities and existing challenges that will stimulate further study into ultrasensitive magnetic biosensors and healthcare monitors based on the GMI effect.

show abstract

Section: Early Sensor Prototypes (2000–2016)mentioning

confidence: 99%

Magnetoimpedance Biosensors and Real-Time Healthcare Monitors: Progress, Opportunities, and Challenges

et al. 2022

View full text Add to dashboard Cite

show abstract

“…and loss properties of soft magnetic materials [1,2]. Nanocrystalline alloys have the advantages of low coercivity, low losses, high saturation magnetic induction strength, and high permeability [3][4][5][6]. In recent years, amorphous and nanocrystalline alloys have extensively used in transformers, mutual inductors, magnetic shielding, electromagnetic switches and other fields [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Hysteresis and loss characteristics of Fe-based nanocrystalline alloys based on a novel variable-temperature dynamic Jiles–Atherton hysteresis model

Xu,

Zhao,

Ren

et al. 2023

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

The magnetic characteristics of Fe-based nanocrystalline alloys can be influenced by temperature. The conventional dynamic Jiles–Atherton (J-A) hysteresis model does not take into consideration the impact that temperature has on magnetic characteristics. A novel variable-temperature dynamic J-A hysteresis model is proposed in this paper to effectively address the issue. Firstly, the hysteresis loops of Fe-based nanocrystalline are measured at −50 °C–130 °C and DC state. The five parameters of the J-A hysteresis model are identified at various temperatures using the particle swarm optimization algorithm, and five parameters are fitted as functions of temperature. Subsequently, the five parameters as functions of temperature are introduced into the conventional dynamic J-A hysteresis model to construct a novel variable-temperature dynamic J-A hysteresis model, which can not only reflect the impact of temperature but also accurately calculate the losses. Finally, hysteresis loops and losses of Fe-based nanocrystalline alloy are simulated and calculated at different temperatures and frequencies by the variable-temperature dynamic J-A hysteresis model. Meanwhile, this paper also investigates the trends and percentages of hysteresis loss, excess loss as well as eddy current loss with frequency and temperature. Compared to the results of measured data, the maximum average error of the variable-temperature dynamic J-A hysteresis model is 5.83%.

show abstract

“…By using the nanoscience and technology, it is possible to solve many unsolved real life problems such as the fatal diseases like cancer. Till date researchers are working on to synthesize the FINEMET matrix [2,3]. Optimize of the composition [4] for enhancing the thermal and physical physical properties as well as the magnetic properties of the nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

“…The thermal stability increases in opposition to the growth of crystallization and decreases the Curie temperature of the noncrystalline phase which are important for developing optimal magnetic by replacing Fe by Cr . For enhancing the magnetic properties of the FINEMET, Ga is seen to add with FINEMET matrix [3]. By studying the surface morphology of the nanocrystalline precursors through melt-spinning process a substantial development of soft magnetic properties is developed [19,20].…”

Section: Introductionmentioning

confidence: 99%

Effect of annealing on specific magnetization of Fe-Cr-Nb-Cu-Si-B with the partial replacement of Fe by chromium

et al. 2019

View full text Add to dashboard Cite

The samples Fe 73.5-x Cr x Nb 3 Cu 1 Si 13.5 B 9 [x=7, 9, 10 and 12.5 are prepared in the amorphous state in the form of thin ribbons by rapid quenching technique at wheel speed of 25 m s −1 in an Ar atmosphere. The composition was sintered at the temperature 450-8000 C for half an hour. The saturation magnetization (Ms) and Curie temperature (Tc) of these alloys decrease linearly with the increase of Cr content for the entire composition range due to dilution of Fe magnetic moment and weakening of exchange interaction between of magnetic atoms. The critical composition for disappearance of ferromagnetism fall of curve Ms with the replacement Fe by Cr, where the nearest neighbor coupling is longer dominant and intermediate range occur, giving rise to a significant portion of antiferromagnetic interaction. The Curie temperature decreases due the weaker interaction among the Fe magnetic moment. The structural relaxation is associated with the magnetization up to the annealed temperature 600°C and the chemical disorderness arise with reference to enhancement of M of annealed samples. M versus H curves sharply rise which indicates the formation of crystallization and it seems to ferromagnetic and for x=12.5 which is paramagnetic in the amorphous condition with Tc=246 K. This increase of M for the four samples are due to the evolution of ferromagnetic α-Fe (Si) nanograin crystal.

show abstract

Fabrication and soft magnetic properties of rapidly quenched Co-Fe-B-Si-Nb ultra-thin amorphous ribbons

Cited by 22 publications

References 8 publications

Magnetoimpedance Biosensors and Real-Time Healthcare Monitors: Progress, Opportunities, and Challenges

Magnetoimpedance Biosensors and Real-Time Healthcare Monitors: Progress, Opportunities, and Challenges

Hysteresis and loss characteristics of Fe-based nanocrystalline alloys based on a novel variable-temperature dynamic Jiles–Atherton hysteresis model

Effect of annealing on specific magnetization of Fe-Cr-Nb-Cu-Si-B with the partial replacement of Fe by chromium

Contact Info

Product

Resources

About