![Sample our Mathematics & Statistics journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/5943/TOC-Subject-Sample-2021-Mathematics-Statistics.jpg"})
Abstract
The lowest electronically excited state of the nearest neighbour Ni-Ni pair in KMgF3, 3 T 2(E)3 A 2, can be described by six parameters using an effective hamiltonian approach. Electronic transitions between the eight components of the 3 T 2(E)3 A 2 state and the components of the ground state manifold (3 A 2 3 A 2) have been assigned by using the Zeeman effect and magnetic circularly polarized emission (MCPE). This unambiguous assignment establishes the importance of both spin-dependent and spin-independent excitation transfer between the two ions of the pair. The spin-dependent transfer parameters can be rationalized within existing theories of magnetic exchange, but the large values of the spin-independent transfer require a more detailed analysis, outside the scope of this paper.
