Neutron scattering studies of transition metal pyrovanadates M2V2O7(M = Ni, Co, Mn)
The family of transition metal-pyrovanadate systems with general formula M2V2O7 (M =Cu, Ni, Co, Mn) have attracted much interest due to their intriguing crystal structures where the main building blocks are various extended units of M-O and V-O polyhedra. The origin of their interesting physical properties lies closely related to the structural and electronic aspects of the compounds. Recently, our group has systematically investigated the magnetic and electric properties of these pyrovanadates in their polycrystalline form. We have investigated the compound á-Cu2V2O7 using powder inelastic neutron scattering on MARI which shows that the third nearest neighbour exchange interaction playing a dominant role. It would be interesting to estimate the exchange interactions in M2V2O7 (M =Ni, Co, Mn) compounds to find out whether it is general trend that third neighbour exchange interactions are dominate in these compounds also. We therefore propose to investigate magnetic excitations in these compounds using IN4.
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D.T. Adroja; FAK Bjorn; MAJUMDAR Subham; SANNIGRAHI Jhuma and H. C. Walker. (2018). Neutron scattering studies of transition metal pyrovanadates M2V2O7(M = Ni, Co, Mn). Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1579
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