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Ferromagnetism in Rare Earth Metal Doped ZnO: A Theoretical Approach
Abstract
The ferromagnetic properties of Diluted Magnetic semiconductor, Zn1−xDyxO is studied from theoretical point of view. The Heisenberg’s and Greens theorem determine the Hamiltonian of the system. The interaction between the nearest neighboring spin is determined by retarded Greens function. By using Greens theory, defect-induced ferromagnetism is discussed. For the ferromagnetic states, the expected exchange integral is positive and negative for the antiferromagnetic states. In addition, from magnetic property, the temperature dependence of both Magnetizations invented and temperature dependence of wavelength of ZnxDy1−xO is determined as an optical entity. Based on magnetic and optical properties some of peculiar applications namely medical, photoluminescence, and technological applications of Dy doped ZnO are examined.
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References
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