TY  - JOUR
AU  - Stekiel, Michal
AU  - Čermák, P.
AU  - Franz, C.
AU  - Simeth, W.
AU  - Weber, S.
AU  - Ressouche, E.
AU  - Schmidt, W.
AU  - Nemkovski, K.
AU  - Deng, H.
AU  - Bauer, A.
AU  - Pfleiderer, C.
AU  - Schneidewind, A.
TI  - Incommensurate antiferromagnetic order in CePtAl 3
JO  - Physical review research
VL  - 5
IS  - 1
SN  - 2643-1564
CY  - College Park, MD
PB  - APS
M1  - FZJ-2023-02085
SP  - 013058
PY  - 2023
AB  - We report on a neutron diffraction study of single-crystal CePtAl3 complemented by measurements of the specific heat under applied magnetic field. Below TN ≈ 3 K, CePtAl3 develops incommensurate antiferromagneticorder with a single modulation vector k = (0.676 0 0). Residual magnetic scattering intensity above TN and a broadening of the specific heat anomaly at TN may be consistently described in terms of a Gaussiandistribution of transition temperatures with a standard deviation σ ≈ 0.5 K. The distribution of TN may be attributed to the observation of occupational and positional disorder between the Pt and Al sites consistent withstructural information inferred from neutron diffraction. Measurements under magnetic field reveal changes of the magnetic domain populations when the field is applied along the [0 1 0] direction consistent with a transitionfrom cycloidal to amplitude-modulated magnetic order ∼2.5 T.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000926781700002
DO  - DOI:10.1103/PhysRevResearch.5.013058
UR  - https://juser.fz-juelich.de/record/1007495
ER  -