Electrical Conductivity Measurement by Acoustic Attenuationin Semi-Insulating GaAs Crystals
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概要
- 論文の詳細を見る
GaAs crystals are both semiconductive and piezoelectric. In such crystals, acoustic waves induce a piezoelectric field which creates an electric current by causing conduction carriers to flow, resulting in Joule heat and attenuation of theacoustic waves. This means that the attenuation of the acoustic waves corresponds to the conductivity in a GaAs crystal. Accurate values of the electrical conductivities in various semi-insulating GaAs crystals were obtained using this principie. Ohmic contacts are sometimes very difficult to form on GaAs crystals, but this method requires no contact electrodes. We therefore expect it to prove an extremely useful method of measuring the conductivity of these materials.
- 社団法人応用物理学会の論文
- 1985-08-20
著者
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Ogawa Tomoya
Department Of Agricultural Chemistry Faculty Of Agriculture The University Of Tokyo
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Hirano R
Nikko Materials Co. Ltd. Ibaraki Jpn
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HIRANO Ryuichi
Department of Physics, Gakushuin University
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KAWAI Yoriyoshi
Department of Physics, Gakushuin University
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Kawai Yoriyoshi
Department Of Physics Gakushuin University
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Kawai Yoriyoshi
Department Of Physical Gakushuin University
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