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

CNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOFAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOSingle 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 gt; 10 kOe induces the spin glass-antiferromagnet. These observations brings AgCo2 V3O10 into the class of geometrically frustrated magnetic systems.49118CNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOFAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOCNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOFAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOSem informaçãoSem informaçãoThis work was done with the support of CNRST (Centre National pour la Recherche Scientifique et Technique) in the Excellence Research Scholarships Program. This work was also supported by the European H2020-MC-RISE-ENGIMA action (no 778072). Yakov Kopelevich was supported by CNPq and FAPESP