The College of Education for Pure Sciences, Physics Department, examined a doctoral dissertation on "The Effect of Spin Inversion Scattering on the Thermo-Spin Properties of Quantum Dot Arrays Between Two Ferromagnetic Poles." The dissertation, submitted by researcher Waleed Hameed Abdul Ameer, aimed to derive an integrated theoretical treatment based on a robust coupling model to study the effect of interspin inversion interactions (between points QD1 and QD2) and internal spin inversion interactions (within points QD1 and QD2) on the spin-dependent electronic properties of four square-coupled quantum dots coupled to ferromagnetic poles via spin-dependent quantum coupling. The transmission spectrum was calculated for different coupling interaction approaches, spin inversion intensity approaches, pole distribution states, spin polarization of the poles, and gate voltages associated with quantum capture and quantum coupling (donor and acceptor). These practical factors support several distinctive practical applications. Spin-dependent electronic spectroscopy calculations have confirmed that the transmittance spectrum can characterize the behavior of a system as individual quantum points or as a group structure. Spin-dependent electronic properties were utilized to calculate the spin-dependent heat current as a function of thermal bias. The intensity of spin inversion events can sustain several spin-dependent scientific features, in addition to the device's behavior as a spin-driven heat engine. These features include Coulomb heat blockade, negative differential thermal conductivity, and spin inversion blockade. Regarding the investigation of the thermodynamic properties, our calculations confirmed that the presence of spin inversions can support distinct efficiency metric values, especially at low electrode temperatures, in addition to the type of spin distribution and polarization. The most crucial requirement, which reduces the electrical thermal conductivity and increases the efficiency metric, is that each quantum point and the receiver are coupled to the same gate voltage. All the calculations presented in our study confirm that the effect of spin inversions is positive and favorable for achieving innovative features in spin electronics

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