  Magnetic phase transitions have been explored in a superlattice formed by
stacking monolayers of $\rm LaTiO_{3}$ and $\rm LaVO_{3}$ alternately, using
ab-initio density functional theory (DFT) and Monte-Carlo (MC) simulations. DFT
derived intra-layer and inter-layer exchange interaction parameters were used
for the MC simulations on a Ising spin model Hamiltonian. Two sharp peaks
observed in specific heat without the interlayer exchange coupling indicate two
independent magnetic ordering in $\rm LaTiO_{3}$ and $\rm LaVO_{3}$ layers at
different temperatures. Inclusion of interlayer coupling leads to one sharp
peak at higher temperature with a broad hump like feature at lower temperature
in specific heat indicating a single magnetic phase transition to $C$-type
antiferromagnetic phase in the superlattice.
