In this study, we investigate the optimal control of the Landau-Lifshitz-Bloch equation in bounded domains in \(\mathbb R^n\) for \(n= 2, 3.\) We establish the existence of strong solutions for dimensions \(n=1, 2, 3\) under suitable growth conditions on the control, and analyze the existence and uniqueness of regular solutions. We formulate the control problem in which the external magnetic field is generated by a finite set of fixed magnetic field coils. We define a cost functional by aiming at minimizing the energy discrepancy between the evolving magnetic moment and the desired state. We demonstrate the existence of an optimal solution pair and employ the classical adjoint problem approach to derive a first-order necessary optimality condition. Given the non-convex nature of the optimal control problem, we derive a second-order sufficient optimality condition using a cone of critical directions. Finally, we prove two crucial results, namely, a global optimality condition and uniqueness of an optimal control.
