Study of the epitaxy between ϵ‐Fe2O3, hematite and spinel in brown‐glazed Chinese ceramics using electron diffraction mapping techniques

Black‐to‐brown Chinese ceramics have sparked the interest of material scientists since the widespread discovery of complex dendritic structures containing mainly the rare ϵ‐Fe2O3 polymorph in their glazes. This study proposes to tackle this issue using two electron diffraction mapping techniques, tr...

Celý popis

Uložené v:
Podrobná bibliografia
Vydané v:Journal of applied crystallography Ročník 57; číslo 2; s. 431 - 439
Hlavní autori: Holé, Clément, Brunet, Magali, Joulié, Sébastien, Ren, Zhao, Wang, Tian, Wallez, Gilles, Sciau, Philippe
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: 5 Abbey Square, Chester, Cheshire CH1 2HU, England International Union of Crystallography 01.04.2024
Blackwell Publishing Ltd
Predmet:
ACOM‐PED
automated crystal orientation mapping–precession electron diffraction
brown glaze
Ceramics
Crystal structure
Crystallization
Dendritic spines
Dendritic structure
Electron diffraction
Electrons
epitaxy
Ferric oxide
Glazes
Hematite
Mapping
Spinel
TKD
transmission Kikuchi diffraction
ϵ‐Fe2O3
ISSN:1600-5767, 0021-8898, 1600-5767
On-line prístup:Získať plný text
Tagy: Pridať tag
Žiadne tagy, Buďte prvý, kto otaguje tento záznam!
Popis
Shrnutí:Black‐to‐brown Chinese ceramics have sparked the interest of material scientists since the widespread discovery of complex dendritic structures containing mainly the rare ϵ‐Fe2O3 polymorph in their glazes. This study proposes to tackle this issue using two electron diffraction mapping techniques, transmission Kikuchi diffraction and automated crystal orientation mapping–precession electron diffraction, which have not been fully exploited despite their relevance for studying these structures at the scales of interest. It first demonstrates the efficiency of applying these techniques to characterize the structures at the nanoscale and discusses some limitations that may be encountered, in particular due to the specificity of heritage samples. It then focuses on the crystalline orientations obtained with these techniques, which highlight epitaxial relationships among the crystalline planes (001) of the ϵ‐Fe2O3 phase, (0001) of the hematite and (111) of the spinel. Finally, it discusses the growth of such complex multi‐phase structures by proposing two possible mechanisms, one based on the transformation of ϵ‐Fe2O3 into hematite and spinel, and the other based on the growth of hematite and spinel on already crystallized ϵ‐Fe2O3 dendrites. It also compares the dendritic structures of the two modern samples with those found in an ancient sample of Jian ware. The possibilities of using transmission Kikuchi diffraction (TKD) to investigate historical materials are demonstrated through a study of ancient and recreated Chinese brown‐glazed ceramics. This work emphasizes the importance of understanding the complex crystalline structures found in glazes to document the growth mechanisms and tackles the specificities of studying such samples with TKD and automated crystal orientation mapping–precession electron diffraction.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:1600-5767
0021-8898
1600-5767
DOI:10.1107/S1600576724001493