Antiferromagnetism and ferromagnetism in layered 1T-CrSe2 with V and Ti replacements

Daniele-Cristina Freitas , Matias Nunez (1) , Pierre Strobel (2) , André Sulpice (3) , Ruben Weht (4) , Armando A. Aligia (1) , Manuel Nunez-Regueiro (3)

1 Centro Atómico Bariloche [Argentine]
2 NEEL - MRS - Matériaux, Rayonnements, Structure
3 NEEL - MagSup - Magnétisme et Supraconductivité
4 CNEA - Comisión Nacional de Energía Atómica [ARGENTINA]

We have studied the effect of substitution of Cr in metastable 1T -CrSe2 by Ti and V on its structural and magnetic properties. The structural transitions observed between 165-180 K in the pure material are stomped by the doping. The pure compound has a magnetization corresponding to an antiferromagnetic (AF) ground state. On Ti substitution, we observe an increase of the lattice constants and a gradual passage towards a ferromagnetic state, while V replacement maintains AF order up to our highest doping, xV = 0.5.With our experimental results and the help of first-principles calculations, we construct the phase diagram of the system.

Domaines: Supraconductivité [cond-mat.supr-con]

Daniele-Cristina Freitas, Matias Nunez, Pierre Strobel, André Sulpice, Ruben Weht, et al.. Antiferromagnetism and ferromagnetism in layered 1T-CrSe2 with V and Ti replacements. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2013, 87, pp.014420. ⟨10.1103/PhysRevB.87.014420⟩. ⟨hal-00966113⟩