- Conference date: 19–23 December 2011
- Location: SRM University, Kattankulathur, Tamilnadu, India
The experimental dc magnetic susceptibility of pyrochlore Tb2 Nb 2O7 between 1.8 K and 300 K are analyzed within the frame work of appropriate crystal-field theory and a mean field approximation by introducing effective anisotropic molecular field tensors, and formulating an exact relation between single-ion susceptibility tensors and site susceptibility tensors. The susceptibility is found to be highly anisotropic along local <111> symmetry axis of tetrahedra unit with the anisotropic values of exchange interactions among Tb-spins, λ∥ = −0.085 T/μB and λ⊥ = −0.074 T/μB.
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