| Автор | Goodenough, J. B. |
| Дата выпуска | 1998 |
| dc.description | [Figure: see text] ▪ Abstract Jahn-Teller phenomena encountered in oxides are reviewed briefly. High-spin Mn(III) in an octahedral site illustrates an ion with twofold orbitally degenerate σ-bonding orbitals having a quenched orbital angular momentum; octahedral V(III) and high-spin Co(II), as well as tetrahedral high-spin Ni(II), are examples of ions with threefold orbitally degenerate π-bonding orbitals that retain orbital angular momentum. Cooperative local deformations that are static give rise, below a transition temperature Tt, to a lowering of the lattice symmetry, anisotropic interactions, and the possibility of a ferromagnetism that is oriented in opposition to a magnetic field applied on cooling through the transition. Dynamic local deformations can influence the physical properties of a solid in a variety of ways. Of special interest is the influence of dynamic deformations at a cross-over from localized to itinerant electronic behavior in a mixed-valent system. |
| Формат | application.pdf |
| Издатель | Annual Reviews |
| Копирайт | Annual Reviews |
| Название | JAHN-TELLER PHENOMENA IN SOLIDS |
| DOI | 10.1146/annurev.matsci.28.1.1 |
| Print ISSN | 0084-6600 |
| Журнал | Annual Review of Materials Science |
| Том | 28 |
| Первая страница | 1 |
| Последняя страница | 27 |
| Аффилиация | Goodenough, J. B.; Center for Materials Science and Engineering, ETC9.102, University of Texas at Austin, Austin, Texas 78712-1063; e-mail: jgoodenough@mail.utexas.edu |
