Morphologies and magnetic properties of FeCo nanoparticles modulated by changing the types of ligands of Co

Alikhanzadeh-Arani, Sima; Salavati‐Niasari, Masoud; Almasi-Kashi, Mohammad

doi:10.1016/j.jmmm.2012.05.014

Cited by 25 publications

(9 citation statements)

References 36 publications

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“…This is evident from the literature reported results that FeCo bulk materials are expected to show reduced coercivities (B10-60 Oe) 35 and with a reduction of particle sizes to a value of 10-60 nm range, a moderate increase in the values of H c (102 Oe) is observed. 38 Hence deviations in the FC/ZFC curves are mainly related to dipolar interactions in adjacent particles. At temperatures greater than 300 K, we can expect the superimposition of FC/ZFC curves and hence superparamagnetic behavior of the materials.…”

Section: Magnetic Studiesmentioning

confidence: 99%

FTIR, magnetic and Mössbauer investigations of nano-crystalline Fe_xCo_1−x(0.4 ≤ x ≤ 0.8) alloys synthesized via a superhydride reduction route

2015

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Section: Magnetic Studiesmentioning

confidence: 99%

FTIR, magnetic and Mössbauer investigations of nano-crystalline Fe_xCo_1−x(0.4 ≤ x ≤ 0.8) alloys synthesized via a superhydride reduction route

2015

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“…Recently, much attention has been focused on Fe-based magnetic nanoparticles due to their controllable structure, excellent magnetic properties, dielectric properties, and latent use in microwave absorption and biomedical applications [10][11][12][13][14]. Many works have been done to synthesize varieties of nano-sized FeCo alloys for compensating the limitation of traditional FeCo materials [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Controlled Morphologies and Intrinsic Magnetic Properties of Chemically Synthesized Large-Grain FeCo Particles

Cao

Yang

et al. 2015

J Supercond Nov Magn

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The high-purity FeCo particles with particle size ranging from 100 nm to 5 μm are fabricated using a direct chemical method. The controlled morphologies of the FeCo samples vary from nearly-spherical to urchin-like or cubic shape under optimal reaction conditions. Very slight surface oxidation is observed in these large-grain FeCo particles. It shows a low coercivity with 91 Oe for the nearly-spherical FeCo particles, while a much higher coercivity of 236 Oe is observed in the urchin-like samples, which can be mainly ascribed to their different morphologies and particle sizes. High saturation magnetization of 205-211 A/m 2 /kg can be achieved in these micron-level FeCo particles due to their high purity and single bodycentered cubic (bcc) phase structure. The compositioncontrolled FeCo particles with different Fe/Co atom ratios can be obtained by adjusting the reaction temperature, which results in their variable saturation magnetization. The relative simple and low-cost chemical synthesis of large-grain FeCo particles promise their potential use in complicated shape and miniaturized FeCo-based magnetic components.

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“…Magnetic nano-materials are now widely fabricated and used in different fields due to their unique physical and chemical characteristics such as surface effects [1][2][3]. However, it is still a challenge to prepare the isolated magnetic nanoparticles and control their composition, morphology and phase structure.…”

Section: Introductionmentioning

confidence: 99%

Magnetic and Structural Characterizations of Co-based Heusler Nanoparticles Fabricated via Simple Co-precipitation Method

et al. 2015

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Nanoparticles of Co 2 FeAl magnetic alloy was successfully fabricated in the presence of a well-known capping agent, polyvinyl alcohol, as a polymer template. The magnetic properties were studied using hysteresis curve and firstorder reversal curve (FORC) measurements at room temperature. FORC diagrams demonstrated a wide distribution of the coercive field owing to the presence of different particle sizes in products. TEM image also showed that the synthesized samples are composed of some large clusters containing a few smaller particles. The maximum value of magnetization (*76 emu/g) and coercivity (573 Oe) were obtained in the annealed sample with 5°C/min. A wider distribution of grain size with a smaller average of 20.5 nm as well as lower-degree of crystallinity was observed in the sample annealed with higher rate of 10°C/min.

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Morphologies and magnetic properties of FeCo nanoparticles modulated by changing the types of ligands of Co

Cited by 25 publications

References 36 publications

FTIR, magnetic and Mössbauer investigations of nano-crystalline Fe_xCo_1−x(0.4 ≤ x ≤ 0.8) alloys synthesized via a superhydride reduction route

FTIR, magnetic and Mössbauer investigations of nano-crystalline Fe_xCo_1−x(0.4 ≤ x ≤ 0.8) alloys synthesized via a superhydride reduction route

Controlled Morphologies and Intrinsic Magnetic Properties of Chemically Synthesized Large-Grain FeCo Particles

Magnetic and Structural Characterizations of Co-based Heusler Nanoparticles Fabricated via Simple Co-precipitation Method

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Morphologies and magnetic properties of FeCo nanoparticles modulated by changing the types of ligands of Co

Cited by 25 publications

References 36 publications

FTIR, magnetic and Mössbauer investigations of nano-crystalline FexCo1−x(0.4 ≤ x ≤ 0.8) alloys synthesized via a superhydride reduction route

FTIR, magnetic and Mössbauer investigations of nano-crystalline FexCo1−x(0.4 ≤ x ≤ 0.8) alloys synthesized via a superhydride reduction route

Controlled Morphologies and Intrinsic Magnetic Properties of Chemically Synthesized Large-Grain FeCo Particles

Magnetic and Structural Characterizations of Co-based Heusler Nanoparticles Fabricated via Simple Co-precipitation Method

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FTIR, magnetic and Mössbauer investigations of nano-crystalline Fe_xCo_1−x(0.4 ≤ x ≤ 0.8) alloys synthesized via a superhydride reduction route

FTIR, magnetic and Mössbauer investigations of nano-crystalline Fe_xCo_1−x(0.4 ≤ x ≤ 0.8) alloys synthesized via a superhydride reduction route