Magnetic Properties of Copper-Nickel Alloys

Williams, E. H.

doi:10.1103/physrev.38.828

Cited by 20 publications

(6 citation statements)

References 4 publications

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“…The complete disappearance of the ferromagnetic order and the transition to a paramagnetic state as expected for an Ni 20 Cu 80 alloy further confirms the APT results. [36] The observation of the partial and then complete dissolution of Ni-clusters in the Cu-matrix after annealing at 275 and at 450 °C, respectively, is consistent with the temperature range estimated from the interdiffusion coefficients for the Ni-Cu system. [37] The values of diffusional length (D t ) 1/2 for t = 7200 s at 275 °C (548 K) and 450 °C (723 K) are 60 nm and 380 nm, respectively.…”

Section: Resultssupporting

confidence: 82%

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A New Class of Cluster–Matrix Nanocomposite Made of Fully Miscible Components

et al. 2023

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Nanocomposite materials, consisting of two or more phases, at least one of which has a nanoscale dimension, play a distinctive role in materials science because of the multiple possibilities for tailoring their structural properties and, consequently, their functionalities. In addition to the challenges of controlling the size, size distribution, and volume fraction of nanometer phases, thermodynamic stability conditions limit the choice of constituent materials. This study goes beyond this limitation by showing the possibility of achieving nanocomposites from a bimetallic system, which exhibits complete miscibility under equilibrium conditions. A series of nanocomposite samples with different compositions are synthesized by the co‐deposition of 2000‐atom Ni‐clusters and a flux of Cu‐atoms using a novel cluster ion beam deposition system. The retention of the metastable nanostructure is ascertained from atom probe tomography (APT), magnetometry, and magnetotransport studies. APT confirms the presence of nanoscale regions with ≈100 at% Ni. Magnetometry and magnetotransport studies reveal superparamagnetic behavior and magnetoresistance stemming from the single‐domain ferromagnetic Ni‐clusters embedded in the Cu‐matrix. Essentially, the magnetic properties of the nanocomposites can be tailored by the precise control of the Ni concentration. The initial results offer a promising direction for future research on nanocomposites consisting of fully miscible elements.

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Section: Resultssupporting

confidence: 82%

“…The complete disappearance of the ferromagnetic order and the transition to a paramagnetic state as expected for an Ni 20 Cu 80 alloy further confirms the APT results. [ 36 ]…”

Section: Resultsmentioning

confidence: 99%

A New Class of Cluster–Matrix Nanocomposite Made of Fully Miscible Components

et al. 2023

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“…Magnetic susceptibility of Cu is very small and the value is negative. 14,15) Therefore, the magnetic susceptibility of Zr-Cu alloys may be suddenly decreased. With further increases in the Cu amount, the magnetic susceptibility decreased slightly.…”

Section: Resultsmentioning

confidence: 99%

Magnetic Susceptibility of Zr-Cu Binary Alloys

Hong

Kim

2014

Mater. Trans.

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The objective of this study is to investigate the magnetic susceptibility of Zr-Cu binary alloys for their potential use as biomaterials with nullifying magnetic properties for magnetic resonance imaging diagnosis. The Zr-Cu binary alloys were prepared using the arc-melting process with zirconium strips and oxygen-free copper. This binary alloy has two dominant phases consisting of ¡-Zr and CuZr 2 intermetallic phase. The magnetic susceptibility of the Zr-Cu binary alloys was extremely low, approximately 10 ¹7 ; this level is approximately one order less than that of pure Zr and other commercialized metallic biomaterials. Consequently, Zr-Cu binary alloys have the potential to be used as biomaterials with low magnetic property.

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“…CuNi alloys have received wide attention due to their interesting mechanical properties 1,2 (high tensile strength and good wear resistance), anticorrosion 3 , electrocatalytic 4 , and electrical properties 5 , as well as their magnetic properties (which depend on the CuNi composition) 1, 6 .…”

Section: Introductionmentioning

confidence: 99%