Magnetic structure of a non-centrosymmetric CePtSi3

Neutron diffraction experiments have been performed on single crystalline samples of CePtSi3. We found that the incommensurate magnetic propagation vector tau(1) = (+/- 0.283, 0, 0) in the phase I (2.2 similar to 4.8 K) switches to the commensurate vectors tau(2) = (+/- 0.25, 0, 0) and tau(3) = (+/- 0.25, 0, +/- 1) in the phase III (similar to 2.8 K) at zero field. Although the magnetic structure of CePtSi3 in the phase I is a spin density wave similar to those in CeRhSi3, CeIrSi3, and CePdSi3, the magnetic structure in the phase III is commensurate unlike other CeTSi3 (T = Rh, Ir, Pd) compounds. (c) 2018 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license