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Size-Driven Structural and Thermodynamic Complexity in Iron Oxides

Navrotsky, Alexandra, Mazeina, Lena, Majzlan, Juraj·2008·Science

Abstract

Iron oxides occur ubiquitously in environmental, geological, planetary, and technological settings. They exist in a rich variety of structures and hydration states. They are commonly fine-grained (nanophase) and poorly crystalline. This review summarizes recently measured thermodynamic data on their formation and surface energies. These data are essential for calculating the thermodynamic stability fields of the various iron oxide and oxyhydroxide phases and understanding their occurrence in natural and anthropogenic environments. The competition between surface enthalpy and the energetics of phase transformation leads to the general conclusion that polymorphs metastable as micrometer-sized or larger crystals can often be thermodynamically stabilized at the nanoscale. Such size-driven crossovers in stability help to explain patterns of occurrence of different iron oxides in nature.

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Metadata

Authors
Navrotsky, A., Mazeina, L., & Majzlan, J.
Venue
Science
Published
2008-03-21
Volume
319
Issue
5870
Pages
1635-1638
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2057697660
Cited by
769
References
0
FWCI
23.77
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Size-Driven Structural and Thermodynamic Complexity in Iron Oxides. https://app.cochat.ai/papers/10.1126/science.1148614
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Navrotsky, A., Mazeina, L., & Majzlan, J. (2008). Size-Driven Structural and Thermodynamic Complexity in Iron Oxides. Science. https://doi.org/10.1126/science.1148614

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