New pressure induced phase transitions in mullite-type Bi2(Fe4 – x Mn x )O10 – δ complex oxides

Autor:	Michael W. Lufaso, N Florida, Patricia E. Kalita, Kristina Lipinska, Koln, CIW, Zachary R. Kann, Hartmut Schneider, Stanislav V. Sinogeikin, Andrew Cornelius, Oliver Hemmers
Rok vydání:	2012
Předmět:	Diffraction Phase transition Materials science Metals and Alloys Oxide Analytical chemistry Synchrotron radiation A diamond Sintering Mullite Condensed Matter Physics Crystallography chemistry.chemical_compound chemistry X-ray crystallography Materials Chemistry Physical and Theoretical Chemistry
Zdroj:	International Journal of Materials Research. 103:464-468
ISSN:	2195-8556 1862-5282
Popis:	Single phased mullite-type Bi2Fe4 – x Mn x O10 – δ mixed crystals (0.25 ≤ x ≤ 3.125) and the end-member Bi2Fe4O9, synthesized from the oxides by reaction sintering up to 825°C, were studied at high-pressures in order to probe their high-pressure behavior and any possible structural phase transitions. In-situ synchrotron radiation-based powder X-ray diffraction was carried out in a diamond anvil cell, under quasi-hydrostatic conditions, up to a pressure of about 20 GPa at room temperature for each sample. A pressure-induced phase transition was found in all samples. The transition appeared spread over a pressure range and was not completed at the top investigated pressure. This is the first report of a pressure-induced phase transition in Bi2Fe4 – x Mn x O10 – δ mixed crystals.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6c0fd1ff710c42063159142a3164bdbe https://doi.org/10.3139/146.110719 Zobrazit plný text záznamu