Galvanomagnetic Properties of Well-Oriented Graphite in Relation to the Structural Imperfections
スポンサーリンク
概要
- 論文の詳細を見る
The Hall coefficient and magnetoresistance in well oriented graphite are measured at 77 K with the field oriented parallel to the c-axis. Various degrees of structural perfections are observed in the samples investigated. The magnetic field is continuously changed from 0 to 10 kG for each run. The concentrations and mobilities of conduction carriers in the samples are estimated by an analysis based on coventional multi-carrier models. Special care is taken in accurate determination of the Hall coefficient and magnetoresistance at low field (H<3kG), which leads to a conclusion that highly mobile electrons do exist as minority carriers in each sample. With increasing imperfection, the concentrations of majority electrons and holes are found to increase, and mobilities to decrease. The same trend is also observed for minority electrons. These results imply that the introduction of structural imperfections into graphite causes considerable perturbation on the band structure.
- 社団法人応用物理学会の論文
- 1972-07-05
著者
-
HISHIYAMA Yoshihiro
Musashi Institute of Technology
-
ONO Akio
Musashi Institute of Technology
-
Tsuzuku Takuro
Nihon Univesity At Narashino
-
Tsuzuku Takuro
Nihon University At Narashino
-
TAKEZAWA Takeshige
Nihon Univesity at Narashino
関連論文
- An EELS study on an individual borondoped multi-walled carbon nanotube
- Anomalous Giant Magnetoresistance in Heusler-Type Alloys Fe_VGa
- Structural Improvement of Carbon Fibers Prepared from Benzene
- Structure and Properties of Graphitized Carbon Fiber
- Low Temperature Anomalies in the Thermoelectric Power of Highly Oriented Graphite
- Ordinary Transport Properties of the γ Phase Alloys
- Point-Contact Spectra of Graphite
- Field Dependence of Magnetoresistance in No-binder Soft Carbons at 77゜K
- Galvanomagnetic Properties of Well-Oriented Graphite in Relation to the Structural Imperfections
- Electronic Processes in Residue Compounds of Graphite Nitrate
- Internal Friction Peak of Halogen-Doped Graphite Rising near Room Temperature