Document Details Document Type : Thesis  Document Title : Interaction within the interrelated Trilogies التفاعل المتبادل داخل الثلاثيات المترابطة   Subject : Physics  Document Language : Arabic  Abstract : A many electron theory of the exchange interactions within a mixed valence clusters of transition metal ions has been developed. The theory takes into account the degeneracy of the orbital states of d ions, and the electron electron interactions, which result in a complex spectrum of ions in crystal fields. Present work discusses a triad of ions of the type ( dn+l @ d n @ d n-l ), where n is 2. It is assumed that all three ions are in their ground manifolds, so the cluster manifold under discussion is ( 4 A @ 3T " 2 1 @ 2T ). The electronic states of the mixed valence cluster are obtained as 2 linear combinations of the states arising from all possible single electron states. Second quantization techniques are used to calculate the energy matrices in second order of perturbation. The energy matrix for the ground multiplet with S = 3 has been diagonalaized and the energy eigenvalues have been determined to suggest an energy spectrum for the system  Supervisor : Prof. Khursheed Athar Siddiqui  Thesis Type : Master Thesis  Publishing Year : 1421 AH 2000 AD  Co-Supervisor : Dr. Mohammad Saeed Alahmadi  Added Date : Wednesday, June 11, 2008  Researchers Researcher Name (Arabic) Researcher Name (English) Researcher Type Dr Grade Email هيفاء صالح القناص Al-Qnnas, Haifaa Saleh Researcher Master   Files File Name Type Description  23845.pdf pdf المستخلص  23846.pdf pdf Abstract Back To Researches Page