New pressure induced phase transitions in mullite-type Bi2(Fe4-xMnx)O10-δ complex oxides
- UNLV
Single phased mullite-type Bi2Fe4-xMnxO10-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-xMnxO10-δ mixed crystals.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Organization:
- DOE - NUCLEAR ENERGY
- OSTI ID:
- 1039458
- Journal Information:
- International Journal of Materials Research, Vol. 103, Issue 2012; ISSN 1862-5282
- Country of Publication:
- United States
- Language:
- ENGLISH
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