Thermal expansion of kyanite at ambient pressure: An X-ray powder diffraction study up to 1000 °C
نویسندگان
چکیده
منابع مشابه
An in situ powder diffraction study of the structural mixed-phase of YBa2Cu3O6+x at 200 and 300C
In this study, the YBa2Cu3O6+x samples at temperatures 200 and 300°C, as the value of x ( the oxygen content in 0the basal plane) increased under nearly thermodynamical equilibrium condition, the structure changed from the well- known tetragonal (T) to a mixed-phase (T+OII) region (orthorhombicII phase is a superstructure). This mixed-phase region suggests a first order T/OII phase transition ...
متن کاملAnomalous Thermal Expansion of HoCo0.5Cr0.5O3 Probed by X-ray Synchrotron Powder Diffraction
Mixed holmium cobaltite-chromite HoCo0.5Cr0.5O3 with orthorhombic perovskite structure (structure type GdFeO3, space group Pbnm) was obtained by solid state reaction of corresponding oxides in air at 1373 K. Room- and high-temperature structural parameters were derived from high-resolution X-ray synchrotron powder diffraction data collected in situ in the temperature range of 300-1140 K. Analys...
متن کاملX-Ray Powder Diffraction Metrics
To compare sample data from x-ray diffraction a suitable metric is developed to evaluate the similarity (or dissimilarity) between samples and to compare it to a references. The methodology focuses on the d-lines and uses the intensity measurements indirectly in the algorithm. The resulting d-line distribution and summary statistics of the differences is used to establish whether a true differe...
متن کاملIn situ powder X-ray diffraction study of the hydro-thermal formation of LiMn2O4 nanocrystallites.
In situ measurements of the hydrothermal formation of LiMn2O4 (LMO) nanocrystallites reveal that the reaction progresses in steps, each creating a different crystalline phase. The reaction route is summarized as KMnO4→disordered δ-MnO2→(ordered δ-MnO2)→LiMn2O4→(γ-Mn2O3)→Mn3O4. The phase purity of LMO can be controlled by reaction time and temperature where phase pure LMO is obtained after 150-2...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Geoscience Frontiers
سال: 2010
ISSN: 1674-9871
DOI: 10.1016/j.gsf.2010.07.002