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

Abstract

${}^{139}$La 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 LaCrGe${}_3$. ${}^{139}$La-NMR spectra for all measured pressures in the ferromagnetically ordered state show a large shift due to the internal field induction $|$$B_{\mathrm{int}}$$|$ $\sim$ 4 T at the La site produced by Cr ordered moments. The change in $B_{\mathrm{int}}$ by less than 5\% with $p$ up to 2.64~GPa indicates that the Cr 3$d$ moments are robust under pressure. The temperature dependence of NMR shift and $B_{\mathrm{int}}$ suggest that the ferromagnetic order develops below $\sim$ 50~K under higher pressures in a magnetic field of $\sim$ 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 $T_{\mathrm{C}}$ are revealed to be three dimensional ferromagnetic throughout the measured $p$ region.

9 pages, 6 figures, accepted for publication in Phys. Rev. B. arXiv admin note: text overlap with arXiv:1906.00249

References in corpus (10)

• Superconductivity on the border of weak itinerant ferromagnetism in UCoGe
• Pressure induced superconductivity on the border of magnetic order in MnP
• Tricritical point and wing structure in the itinerant ferromagnet UGe2
• Ferromagnetic Quantum Critical Point Avoided by the Appearance of Another Magnetic Phase in LaCrGe${}_3$ under Pressure
• Ferromagnetic Quantum Critical Point in Non-Centrosymmetric Systems
• Avoided ferromagnetic quantum critical point in CeRuPO
• Formation of short-range magnetic order and avoided ferromagnetic quantum criticality in pressurized LaCrGe${}_3$
• Indication of Ferromagnetic Quantum Critical Point in Kondo Lattice CeRh${}_6$Ge${}_4$
• Avoided ferromagnetic quantum critical point in pressurized La${}_5$Co${}_2$Ge${}_3$
• Magnetic fluctuations in the itinerant ferromagnet LaCrGe3 studied by 139La NMR

Cited by in corpus (7)

• Emergence of mesoscale quantum phase transitions in a ferromagnet
• Unusual coercivity and zero field stabilization of fully saturated magnetization in single crystals of LaCrGe${}_3$
• Magnetic domain depinning as possible evidence for two ferromagnetic phases in LaCrGe${}_3$
• Electron Spin Resonance of the itinerant ferromagnets LaCrGe3, CeCrGe3 and PrCrGe3
• Neutron Depolarization due to Ferromagnetism and Spin Freezing in CePd${}_{1-x}$Rh${}_x$
• Signatures of two ferromagnetic states and goniopolarity in LaCrGe3 in the Hall effect
• Avoided ferromagnetic quantum critical point in CeZn