Study of Ferromagnetism in Diluted Magnetic Semiconductor CAAS

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dc.contributor.authorAbreha, Merhawi
dc.date.accessioned2018-06-29T09:35:28Z
dc.date.accessioned2023-11-09T11:24:02Z
dc.date.available2018-06-29T09:35:28Z
dc.date.available2023-11-09T11:24:02Z
dc.date.issued2007-07
dc.description.abstractIn the present study we study ferromagnetism of a transition free diluted magnetic semiconductor CaAs. Ferromagnetism in this curious material is due to the spin polarization of p-orbitals of the As atom. This mechanism is different from that of the CrAs in which Cr atoms possess magnetic moments [20, 23]. Ca atom does not have magnetic moments; its role is just to provide electrons with As atoms at the fcc site and to sustain crystal symmetry. The Curie temperature is estimated within an improvement over the mean-field approximation RKKY interaction for homogeneous systems with randomly distributed localized spins and is obtained to be approximately proportional to the spin concentrationen_US
dc.identifier.urihttp://10.90.10.223:4000/handle/123456789/4969
dc.language.isoenen_US
dc.publisherAddis Ababa Universityen_US
dc.subjectMagnetic Semiconductor CAASen_US
dc.titleStudy of Ferromagnetism in Diluted Magnetic Semiconductor CAASen_US
dc.typeThesisen_US

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