ISIS Neutron and Muon Source Data Journal

Formation of Ho2Ge2O7 Pyrochlore at High Temperature and Pressure

Abstract: When synthesised at high pressure and temperature, holmium germanate adopts the pyrochlorestructure. Because of its geometry, materials with this structure often have exotic and interestingmagnetic properties. Normally, the pyrochlore structure is only stable when the two metals arerelatively similar in size, which is not the case for Ho and Ge. This explains why extremeconditions are required to make it. In this experiment we will use the Pearl diffractometer to followthe conversion of a mixture of the simple component oxides to the pyrochlore as we increasetemperature and pressure. We have also recently made a sample of holmium germanate in adifferent crystal structure and hope to use this as a precursor phase that can be converted to thepyrochlore at lower temperature or pressure than the simple oxide approach.

Principal Investigator: Dr Helen Playford
Experimenter: Professor Richard Walton
Experimenter: Dr Matthew Tucker
Experimenter: Dr Craig Bull
Local Contact: Dr Nicholas Funnell

DOI: 10.5286/ISIS.E.RB1620454

ISIS Experiment Number: RB1620454

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 Helen Playford et al; (2016): Formation of Ho2Ge2O7 Pyrochlore at High Temperature and Pressure , STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1620454

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