ISIS Neutron and Muon Source Data Journal

Magnetic Excitation Spectrum of Two New Rare Earth Pyrochlores

Abstract: The aim of the proposed experiment is to explore the magnetic behavior of the new rare earth Pyrochlores Pr2Hf2O7 and Nd2Hf2O7 by using CNCS to measure their magnetic scattering. Both compounds promise interesting new physics. Pr2Hf2O7 may realise the long-sought-after quantum spin ice state expected for Pr3+ on a Pyrochlore lattice. This compound shows complete absence of long-range magnetic order despite substantial spin correlations revealed by AC susceptibility which verify a spin liquid ground state. In contrast,Nd2Hf2O7 develops long-range magnetic order with an all-in-all-out magnetic structure revealing that the magnetic interactions are antiferromagnetic rather than ferromagnetic as found in spin ice. Here strong diffuse scattering is also expected due to the highly suppressed ordered moment.

Principal Investigator: Dr Alysia Lake
Experimenter: Dr Nazmul Islam
Experimenter: Mr Alexandros Samartzis
Experimenter: Dr Vivek Kumar Anand
Local Contact: Dr Rob Bewley

DOI: 10.5286/ISIS.E.RB1520323

ISIS Experiment Number: RB1520323

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 Alysia Lake et al; (2015): Magnetic Excitation Spectrum of Two New Rare Earth Pyrochlores, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1520323

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