Mechanochemical treatment of Haematite - Neutron diffraction investigation

E. Wu; S. J. Campbell; W. A. Kaczmarek; M. Hofmann; S. J. Kennedy; A. J. Studer

doi:10.4028/www.scientific.net/msf.312-314.121

Mechanochemical treatment of Haematite - Neutron diffraction investigation

E. Wu^*, S. J. Campbell, W. A. Kaczmarek, M. Hofmann, S. J. Kennedy, A. J. Studer

^*Corresponding author for this work

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

10 Citations (Scopus)

Abstract

The structural changes which take place on wet-milling α-Fe₂O₃ powder in vacuum have been investigated by neutron diffraction. The transformation of rhombohedral α-Fe₂O₃ to the fcc Fe₃O₄-type spinel structure has been monitored during the wet-milling process. The refinements are consistent with the occurrence of vacancies in both the tetrahedral and the octahedral sites of the milled, nonstoichiometric Fe_3-xO₄ product. The structure and properties of the mechanochemically synthesized Fe_3-xO₄ allow the defect phase to be distinguished from both γ-Fe₂O₃ and Fe₃O₄.

Original language	English
Pages (from-to)	121-126
Number of pages	6
Journal	Materials Science Forum
Volume	312
DOIs	https://doi.org/10.4028/www.scientific.net/msf.312-314.121
Publication status	Published - 1999
Event	Proceedings of the 1998 International Symposium on Metastable, Mechanical Alloyed and Nanocrystalline Materials, ISMANAM-98 - Wollongong, Sydney, Aust Duration: 7 Dec 1998 → 12 Dec 1998

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@article{0b1609f795004226b149d000dad87943,

title = "Mechanochemical treatment of Haematite - Neutron diffraction investigation",

abstract = "The structural changes which take place on wet-milling α-Fe2O3 powder in vacuum have been investigated by neutron diffraction. The transformation of rhombohedral α-Fe2O3 to the fcc Fe3O4-type spinel structure has been monitored during the wet-milling process. The refinements are consistent with the occurrence of vacancies in both the tetrahedral and the octahedral sites of the milled, nonstoichiometric Fe3-xO4 product. The structure and properties of the mechanochemically synthesized Fe3-xO4 allow the defect phase to be distinguished from both γ-Fe2O3 and Fe3O4.",

author = "E. Wu and Campbell, {S. J.} and Kaczmarek, {W. A.} and M. Hofmann and Kennedy, {S. J.} and Studer, {A. J.}",

year = "1999",

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journal = "Materials Science Forum",

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note = "Proceedings of the 1998 International Symposium on Metastable, Mechanical Alloyed and Nanocrystalline Materials, ISMANAM-98 ; Conference date: 07-12-1998 Through 12-12-1998",

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TY - JOUR

T1 - Mechanochemical treatment of Haematite - Neutron diffraction investigation

AU - Wu, E.

AU - Campbell, S. J.

AU - Kaczmarek, W. A.

AU - Hofmann, M.

AU - Kennedy, S. J.

AU - Studer, A. J.

PY - 1999

Y1 - 1999

N2 - The structural changes which take place on wet-milling α-Fe2O3 powder in vacuum have been investigated by neutron diffraction. The transformation of rhombohedral α-Fe2O3 to the fcc Fe3O4-type spinel structure has been monitored during the wet-milling process. The refinements are consistent with the occurrence of vacancies in both the tetrahedral and the octahedral sites of the milled, nonstoichiometric Fe3-xO4 product. The structure and properties of the mechanochemically synthesized Fe3-xO4 allow the defect phase to be distinguished from both γ-Fe2O3 and Fe3O4.

AB - The structural changes which take place on wet-milling α-Fe2O3 powder in vacuum have been investigated by neutron diffraction. The transformation of rhombohedral α-Fe2O3 to the fcc Fe3O4-type spinel structure has been monitored during the wet-milling process. The refinements are consistent with the occurrence of vacancies in both the tetrahedral and the octahedral sites of the milled, nonstoichiometric Fe3-xO4 product. The structure and properties of the mechanochemically synthesized Fe3-xO4 allow the defect phase to be distinguished from both γ-Fe2O3 and Fe3O4.

UR - http://www.scopus.com/inward/record.url?scp=0032639009&partnerID=8YFLogxK

U2 - 10.4028/www.scientific.net/msf.312-314.121

DO - 10.4028/www.scientific.net/msf.312-314.121

M3 - Conference article

SN - 0255-5476

VL - 312

SP - 121

EP - 126

JO - Materials Science Forum

JF - Materials Science Forum

T2 - Proceedings of the 1998 International Symposium on Metastable, Mechanical Alloyed and Nanocrystalline Materials, ISMANAM-98

Y2 - 7 December 1998 through 12 December 1998

ER -

Mechanochemical treatment of Haematite - Neutron diffraction investigation

Abstract

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