Tuning the Magnetic Properties of Cobalt-Based Metallic Glass Nanocomposites

Veligatla, Medha; Das, Santanu; Lee, Won Ki; Hwang, Jane; Thumthan, Orathai; Hao, Yaowu; Mukherjee, Sundeep

doi:10.1007/s11837-015-1584-4

Cited by 4 publications

(2 citation statements)

References 22 publications

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“…This prolonged interest in this class of materials is partly based on some intriguing fundamental questions regarding the details of the atomic arrangements within the amorphous state and how these arrangements affect their macroscopic properties. [2][3][4][5][6][7][8] However, solid and convincing experimental evidence for such a correlation between the structure and properties in the amorphous state is still largely lacking and, consequently, this research topic has been and still is a long-standing challenge to materials…”

Section: Introductionmentioning

confidence: 99%

Controlling the structure and magnetic properties of cluster-assembled metallic glasses

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Controlling the structure and magnetic properties of cluster-assembled metallic glasses

et al. 2019

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“…In addition, they exhibit unique structural properties, including ultra-high strength, and superior corrosion and wear resistance [12][13][14]. Furthermore, they show a unique combination of excellent glass forming ability, high Curie temperature [11], and tunable magnetic properties [15].…”

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Spin-exchange interaction between transition metals and metalloids in soft-ferromagnetic metallic glasses

Das

Choudhary

Chernatynskiy

et al. 2016

J. Phys.: Condens. Matter

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High-performance magnetic materials have immense industrial and scientific importance in wide-ranging electronic, electromechanical, and medical device technologies. Metallic glasses with a fully amorphous structure are particularly suited for advanced soft-magnetic applications. However, fundamental scientific understanding is lacking for the spin-exchange interaction between metal and metalloid atoms, which typically constitute a metallic glass. Using an integrated experimental and molecular dynamics approach, we demonstrate the mechanism of electron interaction between transition metals and metalloids. Spin-exchange interactions were investigated for a Fe-Co metallic glass system of composition [(Co1-x Fe x )0.75B0.2Si0.05]96Cr4. The saturation magnetization increased with higher Fe concentration, but the trend significantly deviated from simple rule of mixtures. Ab initio molecular dynamics simulation was used to identify the ferromagnetic/anti-ferromagnetic interaction between the transition metals and metalloids. The overlapping band-structure and density of states represent 'Stoner type' magnetization for the amorphous alloys in contrast to 'Heisenberg type' in crystalline iron. The enhancement of magnetization by increasing iron was attributed to the interaction between Fe 3d and B 2p bands, which was further validated by valence-band study.

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Effect of P on glass forming ability, magnetic properties and oxidation behavior of FeSiBP amorphous alloys

Wang

et al. 2017

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Tuning the Magnetic Properties of Cobalt-Based Metallic Glass Nanocomposites

Cited by 4 publications

References 22 publications

Controlling the structure and magnetic properties of cluster-assembled metallic glasses

Controlling the structure and magnetic properties of cluster-assembled metallic glasses

Spin-exchange interaction between transition metals and metalloids in soft-ferromagnetic metallic glasses

Effect of P on glass forming ability, magnetic properties and oxidation behavior of FeSiBP amorphous alloys

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