Exotic magnetism on the quasi-FCC lattices of the $d^3$ double perovskites La${}_2$NaB${}^{\prime }$O${}_6$ (B${}^{\prime }$ $=$ Ru, Os)

A. A. Aczel, P. J. Baker, D. E. Bugaris +4

We find evidence for long-range and short-range ($\zeta$ $=$ 70 Å~at 4 K) incommensurate magnetic order on the quasi-face-centered-cubic (FCC) lattices of the monoclinic double perovsk…