Optimized values of the lateral heterostructures (Ti₂C)_p/(Ta₂C)_q for p = q (2, 3, 4, 5, 10), lattice constants a and b (in Å), and formation energy E_f (in eV).

Composite (p/q)	a	b	E f
(2/2)	12.15	6.08	0.29
(3/3)	18.25	6.08	−0.67
(4/4)	24.35	6.09	−0.51
(5/5)	30.44	6.085	−0.41
(10/10)	60.94	6.09	−0.20