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Journal Article

Magnetic properties of the itinerant ferromagnet LaCrGe3 under pressure studied by 139La NMR


Gati,  E.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Rana, K., Kotegawa, H., Ullah, R. R., Gati, E., Bud'ko, S. L., Canfield, P. C., et al. (2021). Magnetic properties of the itinerant ferromagnet LaCrGe3 under pressure studied by 139La NMR. Physical Review B, 103(17): 174426, pp. 1-8. doi:10.1103/PhysRevB.103.174426.

Cite as: https://hdl.handle.net/21.11116/0000-0008-C200-C
La-139 nuclear magnetic resonance (NMR) measurements under pressure (p = 0-2.64 GPa) have been carried out to investigate the static and dynamic magnetic properties of the itinerant ferromagnet LaCrGe3. La-139-NMR spectra for all measured pressures in the ferromagnetically ordered state show a large shift due to the internal field induction vertical bar B-int vertical bar similar to 4 T at the La site produced by Cr ordered moments. The change in B-int by less than 5% with p up to 2.64 GPa indicates that the Cr 3d moments are robust under pressure. The temperature dependence of NMR shift and B-int suggest that the ferromagnetic order develops below similar to 50 K under higher pressures in a magnetic field of similar to 7.2 T. Based on the analysis of NMR data using the self-consistent-renormalization (SCR) theory, the spin fluctuations in the paramagnetic state well above T-C are revealed to be three-dimensional ferromagnetic throughout the measured p region.