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Type: Artigo de periódico
Title: Size effect and surface tension measurements in Ni and Co nanowires
Author: Pirota, KR
Silva, EL
Zanchet, D
Navas, D
Vazquez, M
Hernandez-Velez, M
Knobel, M
Abstract: The effect of reduced size on the mechanical and elastic properties measured on 35 nm diameter Ni and Co nanowires is presented and discussed. The stresses induced in the nanowires due to the different thermal expansion constants of the metal and alumina change the magnetic properties of the nanowires, allowing one to measure the effective Young's modulus and the surface tension of the nanowires by means of simple magnetometry. The Young's modulus of the longer nanowire is higher than that of the shorter one that is comparable to its bulk value. This effect is successfully attributed to surface tension effects.
Country: EUA
Editor: Amer Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.76.233410
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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