Structural evolution and characteristics of the phase transformations between α-Fe2O3, Fe3O4 and γ-Fe2O3 nanoparticles under reducing and oxidizing atmospheres

Zhang, Xin; Niu, Yongan; Meng, Xiangdong; Li, Yao; Zhao, Jiupeng

doi:10.1039/c3ce41269e

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Structural evolution and characteristics of the phase transformations between α-Fe2O3, Fe3O4 and γ-Fe2O3 nanoparticles under reducing and oxidizing atmospheres

Shared by NobleBlocks on Jan 1, 2013 • 12:00 AM UTC

Authors:

Xin Zhang

Yongan Niu

Xiangdong Meng

Abstract

The mechanism and conditions for the phase transformations from α-Fe2O3 to Fe3O4 and Fe3O4 to γ-Fe2O3 nanoparticles have been investigated by the thermal analysis method. The morphologies and structures of various nanoparticles after annealing in H2 : Ar at 294 °C and in an O2 atmosphere at 302 °C h...

Subject

Oxidizing agent

Nanoparticle

Annealing (glass)

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