ISIS Neutron and Muon Source Data Journal

Following the formation of Ho2Ge2O7 pyrochlore using high-pressure neutron diffraction

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

Principal Investigator: Dr Helen Playford
Experimenter: Professor Richard Walton
Experimenter: Dr Craig Bull
Experimenter: Dr Matthew Tucker

DOI: 10.5286/ISIS.E.RB1510526

ISIS Experiment Number: RB1510526

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:
Dr Helen Playford et al; (2015): Following the formation of Ho2Ge2O7 pyrochlore using high-pressure neutron diffraction, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1510526

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