ISIS Neutron and Muon Source Data Journal

An Investigation of Magnetic Transitions in NdMn1-xCoxAsO0.95F0.05 (x = 0.03, 0.06, 0.09, 0.12, 0.15)

Abstract: We have recently reported colossal magnetoresistance (CMR) in NdMnAsO0.95F0.05. The CMR in NdMnAsO1-xFx arises due to competition between a strongly correlated antiferromagnetic insulating phase and a paramagnetic semiconductor with field. In order to further investigate the CMR in NdMnAsO0.95F0.05 we have synthesised samples NdMn1-xCoxAsO0.95F0.05 (x = 0.00, 0.03, 0.06, 0.09, 0.12 and 0.15). Magnetoresistivity results show that the low temperature CMR is quickly reduced with increasing Co doping. Susceptibility and resistivity measurements suggest a ferromagnetic transition occurs at Tc = 22 K, 130 K and 155 K for x = 0.09, 0.12 and 0.15 respectively. NdMnAsO0.95F0.05 is antiferromagnetic with a transition temperature TMn = 356 K. In this experiment we plan to investigate the magnetic phase diagram of electron doped NdMn1-xCoxAsO0.95F0.05 (x = 0.03, 0.06, 0.09, 0.12 and 0.15).

Principal Investigator: Professor Abbie McLaughlin
Experimenter: Dr Eve Wildman
Local Contact: Dr Ronald Smith

DOI: 10.5286/ISIS.E.RB1510522

ISIS Experiment Number: RB1510522

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 Abbie McLaughlin et al; (2015): An Investigation of Magnetic Transitions in NdMn1-xCoxAsO0.95F0.05 (x = 0.03, 0.06, 0.09, 0.12, 0.15), STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1510522

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