Reversible a-Fe2O3 to Fe3O4 transformation during ball milling

Søren Linderoth; Jianzhong Jiang; Steen Mørup

Reversible a-Fe2O3 to Fe3O4 transformation during ball milling

Søren Linderoth, Jianzhong Jiang, Steen Mørup

Department of Physics

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The transformation of hematite to magnetite by high-energy ball milling in a sealed container has been studied by Mossbauer spectroscopy and x-ray diffraction. Mechanisms for this transformation are critically discussed. The dominant mechanism is concluded to be due to bond breaking during the high energy ball milling followed by release of the oxygen from the vial. The reverse transformation, magnetite to hematite, is demonstrated to occur by ball milling in air. Mechanisms for this reverse transformation are also put forward.

Original language	English
Journal	Materials Science Forum
Volume	235-238
Pages (from-to)	205-210
ISSN	0255-5476
Publication status	Published - 1997

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title = "Reversible a-Fe2O3 to Fe3O4 transformation during ball milling",

abstract = "The transformation of hematite to magnetite by high-energy ball milling in a sealed container has been studied by Mossbauer spectroscopy and x-ray diffraction. Mechanisms for this transformation are critically discussed. The dominant mechanism is concluded to be due to bond breaking during the high energy ball milling followed by release of the oxygen from the vial. The reverse transformation, magnetite to hematite, is demonstrated to occur by ball milling in air. Mechanisms for this reverse transformation are also put forward.",

author = "S{\o}ren Linderoth and Jianzhong Jiang and Steen M{\o}rup",

year = "1997",

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T1 - Reversible a-Fe2O3 to Fe3O4 transformation during ball milling

AU - Linderoth, Søren

AU - Jiang, Jianzhong

AU - Mørup, Steen

PY - 1997

Y1 - 1997

N2 - The transformation of hematite to magnetite by high-energy ball milling in a sealed container has been studied by Mossbauer spectroscopy and x-ray diffraction. Mechanisms for this transformation are critically discussed. The dominant mechanism is concluded to be due to bond breaking during the high energy ball milling followed by release of the oxygen from the vial. The reverse transformation, magnetite to hematite, is demonstrated to occur by ball milling in air. Mechanisms for this reverse transformation are also put forward.

AB - The transformation of hematite to magnetite by high-energy ball milling in a sealed container has been studied by Mossbauer spectroscopy and x-ray diffraction. Mechanisms for this transformation are critically discussed. The dominant mechanism is concluded to be due to bond breaking during the high energy ball milling followed by release of the oxygen from the vial. The reverse transformation, magnetite to hematite, is demonstrated to occur by ball milling in air. Mechanisms for this reverse transformation are also put forward.

M3 - Journal article

SN - 0255-5476

VL - 235-238

SP - 205

EP - 210

JO - Materials Science Forum

JF - Materials Science Forum

ER -