Unconventional spin-glass-like state in AgCo2V3O10, the novel magnetically frustrated material

Mohammed Hadouchi (1) , Abderrazzak Assani (2) , Mohamed Saadi (3) , Yakov Kopelevich , Robson R. Da Silva (4) , Abdelilah Lahmar (1) , Houssny Bouyanfif (1) , Mimoun El Marssi (1) , Lahcen El Ammari (2)

1 LPMC - Laboratoire de Physique de la Matière Condensée - UR UPJV 2081
2 Laboratoire de Chimie Appliquée des Matériaux, Centre des Sciences des Matériaux
3 METIS - Milieux Environnementaux, Transferts et Interactions dans les hydrosystèmes et les Sols
4 UNESP - Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University

Single crystals of a new silver and-cobalt based vanadate AgCo2V3O10 were grown from a melted mixture. The crystal structure determination reveals that this new vanadate crystallizes in triclinic system with space group P (1) over bar. The structure of the filed compound is constructed from CoO6 octahedra and VO4 tetrahedra sharing edges and vertices leading to an open three-dimensional framework delimiting tunnels along [0 0 1], where the Ag cations are located. The bands observed in Raman spectrum were assigned to corresponding vibrations of the VO4 groups. DC and AC magnetization (susceptibility) measurements revealed the spin-glass (SG) - type transition below a frequency-dependent temperature T-f(H) that is nearly independent on the applied magnetic field. Magnetic field H > 10 kOe induces the spin glass-antiferromagnet. These observations brings AgCo2 V3O10 into the class of geometrically frustrated magnetic systems.

Domaines: Physique [physics]; Matière Condensée [cond-mat]

Mohammed Hadouchi, Abderrazzak Assani, Mohamed Saadi, Yakov Kopelevich, Robson R. Da Silva, et al.. Unconventional spin-glass-like state in AgCo2V3O10, the novel magnetically frustrated material. Journal of Magnetism and Magnetic Materials, 2019, 491, ⟨10.1016/j.jmmm.2019.165623⟩. ⟨hal-03627230⟩