Synthesis and characterization of Co2FeAl nanowires

Sapkota, Keshab R.; Gyawali, P.; Forbes, Andrew; Pegg, Ian L.; Philip, John

doi:10.1063/1.4729807

Cited by 28 publications

(30 citation statements)

References 20 publications

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“…Mechanical alloying method was also used to produce ideal ordered L2 1 structure of Co 2 CrAl nanocrystalline samples [6]. In another study, Sapkota and coworkers [7] reported the synthesis of Co 2 FeAl nanowires with a high Curie temperature using the electrospinning method.…”

Section: Introductionmentioning

confidence: 98%

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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Section: Introductionmentioning

confidence: 98%

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

et al. 2015

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“…They have shown the dependency of saturation magnetization (Ms) and coercivity (Hc) on the reaction time and obtained a maximum saturation magnetization of 189.2 emu/g. Keshab R et al [25] also prepared CFA nanowires of diameter ranging from 50 to 500 nm with a lattice constant of 5.639 Å. They found that the lattice constant of prepared nanowires was within 1% of the lattice parameter of the bulk system.…”

Section: Introductionmentioning

confidence: 99%

Size-dependent structural and magnetic properties of disordered Co2FeAl Heusler alloy nanoparticles

Ahmad

Mitra

Srivastava

et al. 2019

Journal of Magnetism and Magnetic Materials

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Co2FeAl (CFA) nanoparticles (NPs) of different sizes were synthesized by chemical route. The effect of the size of NPs upon the structure and magnetization compared to its bulk counterpart was investigated. The structure and composition were determined from X-ray diffraction (XRD) and electron microscopy. XRD analysis shows that the samples are having single (A2-type) disordered phase. Magnetization measurements suggest that the samples are soft ferromagnetic in nature with very low coercivity. Enhanced magnetic properties like saturation magnetization, coercive force, retentivity, and Curie-temperature are observed with a decrease in particle size. The effect of particle size on hysteresis losses is also discussed. The smallest particles of size 16 nm exhibited the highest saturation magnetization and transition temperature of 180.73 emu/g and 1261 K, respectively. The origin of enhancement in magnetization of Co2FeAl nano-alloy is attributed to the strong Co-Co exchange interaction due to disorder present in the systems.

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“…However, up to now, there are very few studies on the synthesis of Co 2 FeAl Heusler alloys using the chemical methods. Sapkota et al synthesized Heusler alloy Co 2 FeAl nanowires by using electrospinning method with the existence of polymer [20]. Almasi-Kashi et al prepared Co 2 FeAl nanoparticles by using co-precipitation method with the existence of polymer [21,22].…”

Section: Introductionmentioning

confidence: 99%

The influence of pH value and composition on the microstructure, magnetic properties of Co-Fe-Al Heusler nanoparticles

Yang

Min

Kang

et al. 2017

Chemical Physics Letters

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Co-Fe-Al nanoparticles were synthesized by using a simple solution reduction method. The effects of pH value and atomic composition on the morphology, microstructure and magnetic properties of the prepared Co-Fe-Al nanoparticles were investigated. It was found that pure Co-Fe-Al phase with small particle size can be obtained at pH = 7.0 which have high saturation magnetization and low coercivity. Furthermore, the defects will increase with the increasing of Co composition in Co-Fe-Al nanoparticles which induce the deterioration of the B2 ordering, the abrupt decrease of magnetic moment and the abrupt increase of coercivity.

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Synthesis and characterization of Co2FeAl nanowires

Cited by 28 publications

References 20 publications

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

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

Size-dependent structural and magnetic properties of disordered Co2FeAl Heusler alloy nanoparticles

The influence of pH value and composition on the microstructure, magnetic properties of Co-Fe-Al Heusler nanoparticles

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