ISIS Neutron and Muon Source Data Journal

Crystal field excitations in the defect-fluorite Dy2Zr2O7 and Ho2Zr2O7

Abstract: The low energy physics in rare-earth oxides is largely determined by the single ion properties of the magnetic atom. We propose to measure the crystalline electric field (CEF) properties of the most common by-product of pyrochlores. Defect-fluorite is the generic name given to 2-2-7 stoichiometry compounds that, for different reasons, do not form in the Fd-3m space group. Because of their close relationship in titanate pyrochlores (spin ices), we chose here to investigate the CEF of Dy2Zr2O7 and Ho2Zr2O7. The former was recently shown to present spin dynamics down to 500 mK, in stark contrast with the canonical spin ice Dy2Ti2O7. Given that the tetrahedra arrangement and rare-earth distances in deferct-fluorites are, relative to pyrochlores, basically unaltered, the reason for this behaviour is connected with single ion magnetism. This is the basic motivation of this proposal.

Principal Investigator: Dr Viviane Pecanha Antonio
Experimenter: Professor Andrew Boothroyd
Experimenter: Professor Rafael Freitas
Local Contact: Dr Duc Le
Experimenter: Dr Dharmalingan Prabhakaran
Experimenter: Dr Jonathan Gustavo Acosta Ramon
Local Contact: Dr Tatiana Guidi
Experimenter: Mr Francisco Lieberich
Experimenter: Mr Pedro Lucas Oliveira Silva
Experimenter: Dr Jason Gardner

DOI: 10.5286/ISIS.E.RB2010678

ISIS Experiment Number: RB2010678

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:
Dr Viviane Pecanha Antonio et al; (2020): Crystal field excitations in the defect-fluorite Dy2Zr2O7 and Ho2Zr2O7, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010678

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