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

Rana, Khusboo ; Kotegawa, H ; Ullah, R. R ; Gati, E ; Bud’ko, Sergey L ; Canfield, Paul C ; Tou, H ; Taufour, V ; Furukawa, Yuji

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Título:
Magnetic properties of the itinerant ferromagnet LaCrGe3 under pressure studied by La-139 NMR
Autor: Rana, Khusboo ; Kotegawa, H ; Ullah, R. R ; Gati, E ; Bud’ko, Sergey L ; Canfield, Paul C ; Tou, H ; Taufour, V ; Furukawa, Yuji
Assuntos: Condensed Matter Physics
Notas: Ames Laboratory Accepted Manuscripts
Descrição: 139La 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. 139La-NMR spectra for all measured pressures in the ferromagnetically ordered state show a large shift due to the internal field induction |Bint|∼4 T at the La site produced by Cr ordered moments. The change in Bint 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 Bint suggest that the ferromagnetic order develops below ∼50 K under higher pressures in a magnetic field of ∼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 TC are revealed to be three-dimensional ferromagnetic throughout the measured p region.
Editor: Iowa State University Digital Repository
Data de criação/publicação: 2021
Idioma: Inglês

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