Successive ferroelectric orders and magnetoelectric coupling without long-range magnetic order in highly frustrated pyrochlore compounds: Sm${}_2$Ti${}_{2-x}$V${}_x$O${}_7$

S. Mukherjee, O. Ivashko, S. Majumdar +2

Sm${}_2$Ti${}_2$O${}_7$, a member of rare-earth titanate pyrochlores, exhibits dipolar-octupolar antiferromagnetism below $T_N$ = 0.35 K. We observed two ferroelectric transitions at 182…