Mechanisms of electrical conductivity in olivine
Abstract
Data on the electrical conductivity and the thermoelectric effect in single crystals indicate that the charge conduction mechanism in pure magnesium forsterite is electrons. The concentration of electrons is varied by controlling the number of oxygen vacancies through manipulation of the oxygen pressure. For iron bearing olivine, the conduction mechanism is by electron holes localized on an iron ion. Since iron strongly affects the creep process as well, oxidation of iron is probably accompanied by the production of magnesium vacancies.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- August 1984
- Bibcode:
- 1984STIN...8513159S
- Keywords:
-
- Electrical Resistivity;
- Electrons;
- Olivine;
- Thermoelectricity;
- Charge Transfer;
- Chemical Composition;
- Holes (Electron Deficiencies);
- Iron;
- Magnesium;
- Oxygen;
- Point Defects;
- Single Crystals;
- Electronics and Electrical Engineering