Nanostructures of Sn and their enhanced, shape-dependent superconducting properties

Yung-Jung Hsu*, Shih Yuan Lu, Yi Feng Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

A noncatalytic and template-free vapor transport process was developed to make possible simultaneous growth of single-crystalline tin nanowires, nanosquares, nanodisks, and polycrystalline nanoparticles. The formation of such a rich variety of morphologies in a single growth experiment can be attributed to variations in the growth rate among different crystallo-graphic planes when employing the vapor-solid growth mechanism. Structural characterization with high-resolution transmission electron microscopy reveals a preferential growth direction of [100] in Sn nanowires, nanosquares, and nanodisks. Shape-dependent superconducting properties are observed. These four types of Sn nanostructures all show typical diamagnetic behavior in magnetization measurements, with the three anisotropically shaped nanostructures (nanowires, nanosquares, and nanodisks) showing one order of magnitude enhancement in the working magnetic field ranges for superconductivity, compared to bulk Sn and Sn nanoparticles. The magnetic field range is broadest for nanowires, followed by nanodisks, nanosquares, and nanoparticles.

Original languageEnglish
Pages (from-to)268-273
Number of pages6
JournalSmall
Volume2
Issue number2
DOIs
StatePublished - 1 Feb 2006

Keywords

  • Nanodisks
  • Nanosquares
  • Nanowires
  • Superconductivity
  • Tin

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