| Автор | N W Grimes |
| Дата выпуска | 1992-10-19 |
| dc.description | The concept of the additivity of molecular polarizabilities has been shown to provide a powerful means of rationalizing experimental measurements of the dielectric constants of oxides and of recognizing anomalous data. It is pointed out that the deviant behaviour of MgAl<sub>2</sub>O<sub>4</sub> spinel at room temperature is readily accounted for by an imbalance in the anti-ferroelectric arrangement of permanent dipole moments which arise naturally from its crystal structure. At higher temperatures the dipole moment per octahedral site, calculated to be 7.56*10<sup>-31</sup> C m, may give rise to a much larger dielectric effect if these dipoles arise through a mechanism similar to that operating in the isomorph MnFe<sub>2</sub>O<sub>4</sub>. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Dielectric constants and the oxide additivity rule-comments on a recent investigation of MgAl<sub>2</sub>O<sub>4</sub> spinel |
| Тип | lett |
| DOI | 10.1088/0953-8984/4/42/005 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 4 |
| Первая страница | L567 |
| Последняя страница | L570 |
| Аффилиация | N W Grimes; Dept. of Phys., Aston Univ., Birmingham, UK |
| Выпуск | 42 |
