Magnetic neutron diffraction and pressure studies on CeRuSn

International Conference on Strongly Correlated Electron Systems 2014

Hartwig, Steffen^1 ; Proke, Karel^1 ; Huang, Yingkai^2 ; Pöttgen, Rainer^3

Helmholtz-Zentrum Berlin für Materialien und Energie, M-AQM, Hahn-Meitner Platz 1, Berlin

14109, Germany^1

Van der Waals-Zeeman Institute, University of Amsterdam, Amsterdam

1018XE, Netherlands^2

Institut für Anorganische und Analytische Chemie, Westfälische-Wilhelms-Universität Münster, Münster

48149, Germany^3

关键词: Crystal and magnetic structure;    Influence of magnetic field;    Magnetic neutron diffraction;    Magnetic property measurements;    Magnetic reflections;    Metamagnetic transitions;    Single-crystal neutron diffraction;    Susceptibility measurements;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/592/1/012091/pdf
DOI  :  10.1088/1742-6596/592/1/012091

来源: IOP

【 摘 要 】

We have determined the influence of magnetic fields on the crystal and magnetic structures of CeRuSn using single crystal neutron diffraction and susceptibility measurements at various pressures up to 7.4 kbar and temperatures down to 1.6 K. CeRuSn adopts below 160 K an incommensurately modulated crystal structure. It orders antiferromagnetically below TN=2.8 K in an incommensurate manner as well. This Néel-temperature is pressure independent up to 7.4 kbar. The neutron diffraction experiments detected a magnetic modulation vector qmag=(0, 0, 0.175), however, it is commensurate with the incommensurate crystal structure with qnuc=(0, 0, 0.35). At 0.6 T as well as at 0.9 T metamagnetic transitions have been observed via magnetic property measurements. The magnetic field of 0.9 T applied along the c-axis suppresses the magnetic reflections. The moments align ferromagnetically along the modulated crystal structure. Up to 3 T no change of the wavelength of the crystal structure modulations could be detected.