Intermediate magnetic phase of the magnetoelectric compound ( Ca , Sr ) BaCo 4 O 7 described with the superspace formalism

LOHR, J.; LARRALDE, A. L.; CURIALE, J.; SÁNCHEZ, R.; CAMPO, J.; CUELLO, G. J.; SHEPTYAKOV, D.; KELLER, L.; KENZELMANN, M.; AURELIO, G.

Physical Review B

APS

Lugar: Nueva York; Año: 2020 vol. 102

2469-9950

In this work we report the temperature and doping-level evolution of the crystallographic and magnetic properties of the Sr-doped cobaltates Ca1−xSrxBaCo4O7. The noncollinear ferrimagnetic phase known for the magnetoelectric parent compound is found to persist only for a small amount of Sr doping (x=0.02) and is accompanied by a strong unit cell distortion. In turn, further Sr doping blurs this distortion of lattice parameters and favors other magnetic arrangements. In particular, this work focuses on an intermediate temperature region 62K