Spontaneous Microstructural Evolution and Magnetic Properties of Nano-Scale Particles Comprising Ferromagnetic Element Atoms in Cu-Ni-Fe and Cu-Ni-Co Alloys

Hibiki Sakakura; Shintaro Matai; Mahoto Takeda

doi:10.4028/www.scientific.net/MSF.941.1222

Paper Titles

Texture Formation Behaviour during High-Temperature Plane Strain Compression Deformation in AZ91 Magnesium Alloy
p.1198

Influence of Cr Content on Cellular Precipitation Behaviour of Ni-38Cr-3.8Al Alloy with Lamellar Structure
p.1203

Influence of Grain Size and Thermo-Mechanical Conditions on the Activation Energy for Super Plastic Flow in Ti-6Al-4V Alloy
p.1210

Superplastic-Like Elongation by Transition of Deformation Mechanism from Grain Boundary Sliding to Solute Drag Creep in Fine-Grained Al-Mg Solid Solution Alloy
p.1216

Spontaneous Microstructural Evolution and Magnetic Properties of Nano-Scale Particles Comprising Ferromagnetic Element Atoms in Cu-Ni-Fe and Cu-Ni-Co Alloys
p.1222

Phase Stability and Mechanical Properties of Metastable Ti-X-Sn-Zr (x=Cr, Nb or Fe) Alloys
p.1228

Synthesis and Characterization of Nanostructured Mechanical Cu-Fe-Co Alloy
p.1232

Microstructure of Co-Cr-Fe-Mn-Ni-Cu and Co-Cr-Fe-Mn-Ni-Ag High Entropy Alloys with Liquid Phase Separation
p.1238

Activities of Non-Basal Slips in Deformation of Magnesium Alloy Single and Poly Crystals
p.1242

HomeMaterials Science ForumMaterials Science Forum Vol. 941Spontaneous Microstructural Evolution and Magnetic...

Spontaneous Microstructural Evolution and Magnetic Properties of Nano-Scale Particles Comprising Ferromagnetic Element Atoms in Cu-Ni-Fe and Cu-Ni-Co Alloys

Abstract:

Nano-scale granular magnetic material is a core component in next-generation recording devices. We investigated the influences of element species and composition of ferromagnetic atoms in copper-nickel base nanogranular magnetic materials. In this work, the authors focused on how microstructural evolution and magnetic properties are correlated in Cu-20at%Ni, Cu-15at%Ni-5at%Co and Cu-15at%Ni-5at%Fe alloys. We used Magneto-thermogravimetry (MTG), superconducting quantum interference device (SQUID) magnetometry and first-principles calculations based on the method of Koster-Korringa-Rostker (KKR) with the Coherent Potential Approximation (CPA) in order to investigate magnetic properties. Transmission electron microscope (TEM) observations revealed that ferromagnetic element atoms were precipitated with annealing at 973K, but microstructures were changed, depending on the combination and composition of the solute atoms. The magnetic property measurements and first-principles calculations have confirmed that magnetic precipitates are responsible for the magnetic properties of the Cu-Ni-Co and Cu-Ni-Fe alloys.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volume 941)

Pages:

1222-1227

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.941.1222

Citation:

Cite this paper

Online since:

December 2018

Authors:

Hibiki Sakakura*, Shintaro Matai, Mahoto Takeda

Keywords:

Cu-Ni-Co, Cu-Ni-Fe, Magnetic Property, Microstructure, Nanogranular

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] P. Grünberg, R. Schreiber, Y. Pang, U. Walz, M. Brodsky, H. Sowers, Layered magnetic structures: Evidence for antiferromagnetic coupling of Fe layers across Cr interlayers, J. Appl. Phys., 61 (1987) 3750.

DOI: 10.1063/1.338656

Google Scholar

[2] M. Baibich, J. Broto, A. Fert, F. Dau, F. Petroff, P. Etienne, et al., Giant Magnetoresistance of (001)Fe/(001)Cr Magnetic Superlattices, Phys Rev Lett. 61 (1988) 2472.

DOI: 10.1103/physrevlett.61.2472

Google Scholar

[3] X. Zuo, L. Qu, C. Zhao, B. An, E. Wang, R. Niu, Y. Xin, J. Lu, K. Han, Nucleation and growth of γ-Fe precipitate in Cu-2%Fe alloy aged under high magnetic field, J. Alloy. Compd., 662 (2016) 355-360.

DOI: 10.1016/j.jallcom.2015.12.046

Google Scholar

[4] J. Mino, V. Zhukova, J.J. Del Val, M. Ipatov, A. Martinezamesti, R. Varga, A. Zhukov, Engineering of the GMR Effect in CuCo Microwires with Granular Structure, J. Electron Mater., 45 (2016) 2401-2406.

DOI: 10.1007/s11664-016-4351-6

Google Scholar

[5] N. Omari, H. Lassri, A. Fnidiki, M. Abid, E.K. Hlil, Magnetic and electronic studies of Cu80Fe5Ni15 granular ribbons, J. Magn. Magn. Mater., 343 (2013) 108-111.

DOI: 10.1016/j.jmmm.2013.04.053

Google Scholar

[6] J.S. Kim, T. Taniuchi, M. Mizuguchi, S. Shin, K. Takanashi, M. Takeda, Microstructural evolution and correlated magnetic domain configuration of nanoparticles embedded in a single crystal of Cu75–Ni20–Fe5 alloy, J Phys D Appl Phys. 49 (2016) 335006.

DOI: 10.1088/0022-3727/49/33/335006

Google Scholar

[7] H. Sakakura, J.S. Kim, M. Takeda, Linear arrangements of nano-scale ferromagnetic particles spontaneously formed in a copper-base Cu-Ni-Co alloy, J. Alloy Compd., Accepted (2018).

DOI: 10.1088/1361-6463/aaac1a

Google Scholar

[8] J.S. Kim, M. Takeda, D.S. Bae, Microstructural evolution and magnetic properties of ultrafine solute-atom particles formed in a Cu75–Ni20–Fe5 alloy on isothermal annealing, Jpn. J. Appl. Phys. 55 (2016) 123002.

DOI: 10.7567/jjap.55.123002

Google Scholar