Development of Giant Magnetoresistance Material Based on Cobalt Ferrite

Djamal, Mitra; Ramli, Ramli; Khairurrijal, Khairurrijal; Haryanto, Freddy

doi:10.12693/aphyspola.128.b-19

Cited by 12 publications

(8 citation statements)

References 17 publications

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“…Scherer formula, Eq. (1), was used to calculate grain size of the alloys, using values of peak width at the half maximum β [25,26]. Calculated grain size values of the alloys, as a function of Co concentration are given in Table II.…”

Section: Resultsmentioning

confidence: 99%

Investigation of the Structural and Magnetic Properties of the Cobalt-Nickel Alloys Fabricated in Various Electrolyte Solutions

2017

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Cobalt-Nickel alloys have been widely used for decoration, in magnetic recording devices and corrosion resistance applications, etc. In this study, the influences of cobalt amount in electrolyte on the magnetic and structural properties of the electrodeposited Co-Ni alloys were investigated. An electrolyte solution, consisting of cobalt sulfate, nickel sulfate, nickel chloride and boric acid, was used in electrodeposition. The electrochemical investigation of Co-Ni alloys was completed using cyclic voltammetry and galvanostatic studies. The morphological and structural analyses of the alloys were performed using inductively coupled plasma, scanning electron microscopy, X-ray diffraction and vibrating sample magnetometer techniques. The effect of cobalt concentration on the magnetic properties, phase structure and grain size of the alloys was investigated. Magnetic hysteresis results indicate that the amount of the cobalt content in the electrolyte has a strong influence on the ferromagnetic behavior of fabricated alloys. Results of the study show that changing the electrodeposition parameters, such as composition of electrolyte solution, allows to fabricate alloys with different properties.

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Section: Resultsmentioning

confidence: 99%

Investigation of the Structural and Magnetic Properties of the Cobalt-Nickel Alloys Fabricated in Various Electrolyte Solutions

2017

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“…Average grain size values of the alloys were calculated using the peak width at the half maximum β, using Scherer formula Eq. (1) [17][18][19]. Grain size values of the Co 1−x Ni x alloys as function of varied current and other XRD data are given in Table I.…”

Section: Resultsmentioning

confidence: 99%

Effect of the Applied Current Density on the Structural and Magnetic Properties of the Electrodeposited Cobalt-Nickel Alloy Thin Films

Özdemir

2017

Acta Phys. Pol. A

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In this study, cobalt-nickel (Co-Ni) alloys were deposited electrochemically onto aluminum substrates under applied current densities of 103.8, 138.4, 173 and 207.6 A m −2 . Influence of the applied current density on the structural and magnetic properties of the Co-Ni alloys was investigated. The bath for Co-Ni alloys deposition was composed of 0.08 mol l −1 CoSO4·7H2O, 0.2 mol l −1 NiCl2·6H2O, 0.1 mol l −1 NiSO4·6H2O and 0.25 mol l −1 H3BO3. The electrochemical investigation of Co-Ni alloys was completed using cyclic voltammetry and galvanostatic studies. Inductively coupled plasma analysis has shown that the amount of the cobalt in the deposited alloy has decreased from 73.61% to 67.01% with the increase of the applied current density from 103.8 to 207.6 A m −2 . According to the magnetic analysis results, the values of coercivity coefficient of the deposited Co-Ni alloys range between 115 and 150 Oe, confirming ferromagnetic behavior of the alloys. Experiment results indicate that magnetic and structural properties of the Co-Ni alloy deposits are greatly influenced by the applied current density in the electrodeposition system.

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“…The GMR material has many attractive features, for example, its electric and magnetic properties can be varied in a very wide range, low power consumption, and small size. Meanwhile, ferrite is one of the candidates of magnetic oxide material that could potentially be used as a constituent layer of GMR [4].…”

Section: Magnetic Sensors -Development Trends and Applicationsmentioning

confidence: 99%

Giant Magnetoresistance Sensors Based on Ferrite Material and Its Applications

Djamal¹,

Ramli²

2017

Magnetic Sensors - Development Trends and Applications

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In recent decades, new magnetic sensors based on giant magnetoresistance (GMR) have been studied and developed intensively. GMR materials have great potential for next-generation magnetic field sensing devices. The GMR material has many attractive features, for example, its electric and magnetic properties can be varied in a very wide range, low power consumption, and small size. Therefore, GMR material has been developed into various applications of sensor based on magnetic field sensings, such as magnetic field sensor, a current sensor, linear and rotary position sensor, data storage, head recording, nonvolatile magnetic random access memory, and biosensor. In this chapter, the recent development of a GMR thin-film-based ferrite material will be reviewed. Furthermore, recent and future trend application of GMR sensor will be discussed.

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Development of Giant Magnetoresistance Material Based on Cobalt Ferrite

Cited by 12 publications

References 17 publications

Investigation of the Structural and Magnetic Properties of the Cobalt-Nickel Alloys Fabricated in Various Electrolyte Solutions

Investigation of the Structural and Magnetic Properties of the Cobalt-Nickel Alloys Fabricated in Various Electrolyte Solutions

Effect of the Applied Current Density on the Structural and Magnetic Properties of the Electrodeposited Cobalt-Nickel Alloy Thin Films

Giant Magnetoresistance Sensors Based on Ferrite Material and Its Applications

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