Controlled growth and magnetic property of fept nanostructure: cuboctahedron, octapod, truncated cube, and cube

Shang Wei Chou, Chun Ling Zhu, Sonnathi Neeleshwar, G. Lung Chen, Yang Yuan Chen, Chia Chun Chen

Research output: Contribution to journalArticle

73 Citations (Scopus)

Abstract

The strategy for shape control of alloy FePt nanocrystal was studied systematically. By the careful adjustments of reaction parameters in a solution reaction, surfactant-facet bindings on the growth seed were controlled delicately. FePt octapod, cuboctahedron, truncated cube, and nanocube were successfully prepared from, cuboctahedral seed and examined by high-resolution transmission electron microscopy. The formations of FePt nanostructures were mainly attributed to the differences in the growth rate between the {111} and {100} planes of cuboctahedral seeds. The magnetic measurements showed, that the order of volume, V(nanocube) > V(octapod) > V (cuboctahedron) obviously reflected the order of saturated magnetization (Ms), Ms (nanocube) > M s (cuboctahedron) > Ms (cuboctahedron). Furthermore, the measurements of octapod exhibited the highest coercivity and blocking temperature because of its higher surface to volume ratio and more structural facets

Original languageEnglish
Pages (from-to)4955-4961
Number of pages7
JournalChemistry of Materials
Volume21
Issue number20
DOIs
Publication statusPublished - 2009 Oct 27

    Fingerprint

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

Cite this