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|Title:||Thermodynamics of surface compositional segregation in Ni-Co nanoparticles|
|Authors:||Jayaganthan, R. |
|Citation:||Jayaganthan, R., Chow, G.M. (2002-08-01). Thermodynamics of surface compositional segregation in Ni-Co nanoparticles. Materials Science and Engineering B: Solid-State Materials for Advanced Technology 95 (2) : 116-123. ScholarBank@NUS Repository. https://doi.org/10.1016/S0921-5107(02)00221-0|
|Abstract:||Thermodynamic analysis of a Ni-Co alloy nanoparticle (atomic ratio 1:1) is carried out to study the influence of size effect on surface compositional segregation. The surface compositions of Ni-Co nanoparticles are calculated based on the regular solution model, which takes into account of the size effect, and compared with that of bulk alloy particles with a larger size. It is observed that the segregated surface compositions in the Ni-Co binary alloy single-crystal nanoparticles (with particle diameter of 10-100 nm) are few times larger than that of the corresponding bulk single crystal (with the particle diameter > 100 nm). The details of the thermodynamic modeling and the calculated surface compositions due to segregation are discussed. © 2002 Elsevier Science B.V. All rights reserved.|
|Source Title:||Materials Science and Engineering B: Solid-State Materials for Advanced Technology|
|Appears in Collections:||Staff Publications|
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