S. Muneta et al., RB-87 NMR-STUDY OF THE TRIANGULAR LATTICE ANTIFERROMAGNET RBNICL3, Journal of magnetism and magnetic materials, 140, 1995, pp. 1787-1788
The NMR spectrum and the relaxation time of Rb-87 in the triangular la
ttice antiferromagnet RbNiCl3 have been measured between 0.5 and 60 K.
Spins form triangular structure with a fan-out angle larger than 60 d
egrees in the ordered phase. This is attributed to the unequal interch
ain interactions.