Magnetic field and temperature dependence of the amplitude-modulated magnetic structure of PrNi2Si2 determined by single-crystal neutron diffraction - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Physical Review B: Condensed Matter and Materials Physics (1998-2015) Year : 2010

Magnetic field and temperature dependence of the amplitude-modulated magnetic structure of PrNi2Si2 determined by single-crystal neutron diffraction

Abstract

The temperature and magnetic field dependence of the magnetic structure in the singlet crystal-field ground-state system PrNi2Si2 have been determined using single-crystal neutron diffraction. At the magnetic ordering temperature in zero field, TN=20.0±0.5K , an amplitude-modulated magnetic structure sets in with a propagation vector k=(0,0,0.87) and the magnetic moments of the Pr3+ ions parallel to the c axis of the body-centered tetragonal structure. The magnetic structure remains amplitude modulated down to low temperatures (T=1.6K) with only a small tendency to squaring up, as signaled by the weak intensity of the third harmonic that develops below 16 K. With applied field along the easy axis, the modulated structure goes smoothly over into a ferromagnetic state. At the critical field of Hc=58kOe , the first harmonic disappears and the field-induced ferromagnetic moment shows a kink, in agreement with magnetization measurements. Both the temperature and magnetic field dependence are well described by a periodic field Hamiltonian including magnetic exchange and the crystalline electric field.
Fichier principal
Vignette du fichier
blanco2010.pdf (308.84 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

insu-00564747 , version 1 (11-03-2022)

Licence

Attribution

Identifiers

Cite

J. A. Blanco, B. Fåk, E. Ressouche, B. Grenier, M. Rotter, et al.. Magnetic field and temperature dependence of the amplitude-modulated magnetic structure of PrNi2Si2 determined by single-crystal neutron diffraction. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2010, 82 (5), pp.054414. ⟨10.1103/PHYSREVB.82.054414⟩. ⟨insu-00564747⟩
207 View
31 Download

Altmetric

Share

Gmail Facebook X LinkedIn More