Effect of crystal morphology on magnetic structure of nano-magnetites

Y. H. Chen, J. F. Zhang

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The nano-magnetites with particle, rod, tube, and ring crystal morphologies were synthesized and the differences between macroscopic and microscopic magnetic properties were studied. The macroscopic magnetic properties of nano-magnetites obtained via a superconducting quantum interference device (SQUID) showed that both coercive magnetic field and saturation magnetization per unit volume followed the orders of ring > particle > tube > rod, respectively. This indicated that the crystal morphology affected macroscopic magnetic properties. The particle nano-magnetite contained a single domain while the others contained multiple domains measured by a magnetic force microscope (MFM). However, the domain structure of nano-magnetites calculated from SQUID data showed that all were pseudo-single domains. This suggested that the MFM may be a precise tool to determine magnetic structures. Moreover, the crystal morphology of nano-magnetites affected magnetic properties owing to different magnetic-domain structures.

Original languageEnglish
Pages (from-to)92-98
Number of pages7
JournalSolid State Communications
Volume250
DOIs
Publication statusPublished - 2017 Jan 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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