Microstructural and electrical characterization of Joule heat welds in ultrathin Pt wires

Hironori Tohmyoh, Masato Fujimori

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

This paper reports on the structural and electrical characteristics of Joule heat welds in ultrathin Pt wires with diameters of 600-800 nm. The wires have a bamboo structure where the crystal grains are aligned only in the axial direction. They were welded together in a self-completed manner in air by Joule heating. The electrical resistance of the welded wire system was measured using a potential drop technique. It was found by transmission electron microscope observations that the region affected by welding was very narrow and it appeared that a new grain boundary had been created in this region. Moreover, the welds were found to have good electrical characteristics and the electrical resistance at the weld depended on its cross-sectional area.

Original languageEnglish
Pages (from-to)33-37
Number of pages5
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume46
DOIs
Publication statusPublished - 2012 Sep

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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