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Shape-controlled synthesis of high-purity CrO2 under HTHP

  • Qiang Zhao
  • , Yinbo Fan
  • , Gehui Wen*
  • , Zhigang Liu
  • , Hongan Ma
  • , Xiaopeng Jia
  • , Guangtian Zou
  • , Ho Kwang Mao
  • *Corresponding author for this work
  • Jilin University
  • Carnegie Institution of Washington

Research output: Contribution to journalArticlepeer-review

Abstract

High-purity CrO2 powders were prepared under high temperature (400 °C-600 °C) and high pressure (1 GPa-5 GPa) conditions. The shape, size and the grain boundary density of the CrO2 powders can be tuned via simply changing the experiment conditions, such as temperature and pressure. Magnetic properties of the CrO2 powders prepared under different conditions were investigated also. The saturation magnetizations of the samples are consistent with the best value ever reported. The synthesis of CrO2 powders with controlled morphology should be of interest in tunneling magnetoresistance research.

Original languageEnglish
Pages (from-to)592-595
Number of pages4
JournalMaterials Letters
Volume64
Issue number5
DOIs
StatePublished - 15 Mar 2010
Externally publishedYes

Keywords

  • Characterization methods
  • Crystal growth
  • Magnetic materials

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