ISIS Neutron and Muon Source Data Journal

Structural and Magnetic Properties from Charge Orders in Iron Perovskite Oxides

Abstract: Highly oxidized transition metal cations in oxides tend to display unusual electronic and magnetic behavior due to the highly covalent nature of the M-O interactions. Iron is of particular interest, because the charge instabilities associated with unusually high oxidation states are often relieved through charge transitions such as charge disproportionation (CD) and intermetallic charge transfer (CT). We recently reported the high pressure synthesis of a new perovskite Ca0.5Bi0.5FeO3 which successively exhibits a CD transition at 250 K and a CT transition at 200 K. Both transitions are coupled to changes in the structural, magnetic, and transport properties. Sr doping suppresses the CT transition while Co participates in the CT with possible high/low spin state changes. We propose to collect neutron powder diffraction data from Ca0.5-xSrxBi0.5FeO3 and Ca0.5Bi0.5Fe1-xCoxO3.

Principal Investigator: Professor Paul Attfield
Experimenter: Dr Midori Amano
Experimenter: Dr Graham McNally
Experimenter: Dr Takashi Saito
Local Contact: Dr Ronald Smith
Experimenter: Dr Yuichi Shimakawa
Experimenter: Dr Masato Goto
Experimenter: Dr Fabio Denis Romero
Local Contact: Dr Helen Playford
Experimenter: Dr PAULA KAYSER
Experimenter: Mr Padraig Kearins

DOI: 10.5286/ISIS.E.RB1720133

ISIS Experiment Number: RB1720133

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Paul Attfield et al; (2017): Structural and Magnetic Properties from Charge Orders in Iron Perovskite Oxides, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1720133

Data is released under the CC-BY-4.0 license.