ISIS Neutron and Muon Source Data Journal

Competing Antiferromagnetic and Ferromagnetic Ground States in CaFe3Ti4O12

Abstract: Using high-temperature high-pressure synthetic methods we have recently prepared the new quadruple perovskite CaFe3Ti4O12. Curie-Weiss magnetic susceptibility and Mossbauer data also confirm the presence of Fe2+ S = 2 spins. Magnetic susceptibility data show a maximum at 2.8 K suggesting AFM (antiferromagnetic) ordering of the Fe2+ spins. However the AFM feature in the magnetic susceptibility data is suppressed when measured under high applied magnetic fields, and the same effect is observed in heat capacity data. DFT calculations for the AFM and FM spin arrangements for the Fe2+ spin sublattice in CaFe3Ti4O12 reveal that the two states are very close in energy. We therefore would like to perform neutron diffraction experiments under different temperatures and applied magnet fields to characterise the competition between AFM and FM ground states. We request 3 days on WISH.

Principal Investigator: Professor Paul Attfield
Experimenter: Dr Takashi Saito
Experimenter: Dr Midori Amano
Experimenter: Dr PAULA KAYSER
Experimenter: Mr Khalid Alharbi
Experimenter: Dr Yuichi Shimakawa
Experimenter: Dr Masato Goto
Experimenter: Mr Padraig Kearins
Local Contact: Dr Pascal Manuel
Experimenter: Mr Ka Hou (Jacky) Hong
Experimenter: Dr Fabio Denis Romero
Experimenter: Mr KHALID ALHARBI

DOI: 10.5286/ISIS.E.RB1820072

ISIS Experiment Number: RB1820072

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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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; (2018): Competing Antiferromagnetic and Ferromagnetic Ground States in CaFe3Ti4O12, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1820072

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