Structures and phase transitions of B-Ta2O5 and Z-­Ta2O5: two high-pressure forms of Ta2O5

• Published in: Acta crystallographica. Section B, Structural science Vol. 56; no. 4; pp. 659 - 665
• Main Authors: Zibrov, I. P., Filonenko, V. P., Sundberg, M., Werner, P.-E.
• Format: Journal Article
• Language: English
• Published: 5 Abbey Square, Chester, Cheshire CH1 2HU, England International Union of Crystallography 01.08.2000
• Subjects: High-pressure forms; Microscopy, Electron; Models, Molecular; Molecular Structure; Oxides - chemistry; Phase Transition; Phase transitions; Powder Diffraction; Pressure; Sensitivity and Specificity; Structure; Tantalum - chemistry

A sample of Ta2O5, ditantalum pentaoxide, heat‐treated in a `toroid'‐type high‐pressure chamber at P = 8 GPa and T = 1470 K, was studied by X‐ray powder diffraction and high‐resolution transmission electron microscopy (HRTEM). Two high‐pressure modifications of Ta2O5, isostructural with B‐Nb2O5...