Table 2. Calculated magnetic moments and hole numbers of FePt.

							δn5d	δntotal
Pt	0.38	0.09	0.058	0.082	−1.3%	2.8%	0.006	0.06
Fe	2.96	0.19	0.068	0.063

Here, m_S, m_T, m_L, δn_5d and δn_total represent the spin magnetic moment, magnetic dipole moment, orbital magnetic moment, induced holes of Pt in its 5d orbitals and total induced holes of Pt-1, respectively. These physical parameters were obtained through a first-principles study. δ denotes the difference in physical parameters between ∓0.732 V nm⁻¹ (δn_total=±0.03): δx=x(−0.732 V nm⁻¹)−x(+0.732 V nm⁻¹). ∓0.732 V nm⁻¹ is an electric field in the MgO dielectric.