Title: Muon spin relaxation data for NbFe2

Giblin SR, Margineda D (2016). Muon spin relaxation data for NbFe2. Cardiff University. http://doi.org/10.17035/d.2016.0011382152

Access Rights: Data can be made freely available subject to attribution

Access Method: Click to email a request for this data to opendata@cardiff.ac.uk

Cardiff University Dataset Creators

Dataset Details

Publisher: Cardiff University

Date (year) of data becoming publicly available: 2016

Data format: .bin

Software Required: musrfit, see http://lmu.web.psi.ch/musrfit/technical/main.html

Estimated total storage size of dataset: Less than 100 megabytes

DOI : 10.17035/d.2016.0011382152

DOI URL: http://doi.org/10.17035/d.2016.0011382152


The magnetic ground state of nominally stoichiometric single crystalline NbFe2 is investigated by bulk magnetisation and muon spin relaxation techniques. Magnetic order clearly emerges below the critical temperature TN=10.3 K and is dominated by randomly orientated quasi-static moments. The local field distribution observed by muons can be explained by the phenomenological Gaussian-broadened-Gaussian Kubo Toyabe relaxation function. The observed short range order could be used to describe a new magnetic ground state, but a helical spin density wave with an incommensurate amplitude modulation cannot be ruled out. The sensitivity of μSR to the local magnetic field distribution in the vicinity of the quantum critical point (QCP) in NbFe2 is clearly demonstrated via comparison with already published work. This suggests detailed measurements of the muon relaxation as the QCP is approached will reveal further details of the field distribution and fluctuations in Nb1−yFe2+yNb1−yFe2+y.

Raw musr data for NbFe2 is stored, in standard nexus format. All necessary data is in the header files to view the time stamped decay spectra along with the temperature and field.

Research results based upon these data can bbe found at https://doi.org/10.1016/j.physb.2016.10.014

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Last updated on 2019-05-07 at 13:19