New Itinerant Electron Models of Magnetic Materials

This book highlights a series of new itinerant electron models proposed based on the experimental results of electron spectra obtained since 1970. Although conventional magnetic ordering models were established before 1960, many problems remain to be solved. The new models in this book include an O 2p itinerant electron model for magnetic oxides, a new itinerant electron model for magnetic metals, and a Weiss electron pair model for the origin of magnetic ordering energy of magnetic metals and oxides. With these models, the book explains typical magnetic ordering phenomena including those that cannot be explained using conventional models. These new models are easier to understand than the conventional magnetic ordering models.

Introduces a series of new magnetic ordering models for magnetic materials Presents unambiguous physical mechanisms based on electron spectra and atomic physics Enhances theoretical research and experimental investigations of magnetic materials

Autorentext

Dr. Gui-De Tang is Professor at the Department of Physics, Hebei Normal University, and Visiting Scholar, the Institute of Physics, Chinese Academy of Sciences. He was Visiting Scholar in Laboratoire de Magnétisme et Matériaux Magnétiques, Meudon, France, in 1991.

Inhalt
1 Introduction.- 2. Electron shell structure of free atoms and valence electrons in crystals.- 3. A simple introduction to basic knowledge of magnetic materials.- 4. Difficulties related to conventional magnetic ordering models.- 5. O 2p itinerant electron model for magnetic oxides.- 6. Magnetic ordering of typical spinel ferrites.- 7. Experimental evidences of the IEO model obtained from spinel ferrite.- 8. Spinel ferrites with cant angle magnetic coupling.- 9. Magnetic ordering and electrical transport of perovskite manganites.- 10. Anti-ferromagnetic ordering in oxides with sodium chloride structure.- 11. Itinerant electron model for magnetic metals.- 12. Study on the origin of magnetic ordering energy for magnetic materials.- 13. Prospects and challenges for future work.- Appendixes.