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Titlebook: Boron; Volume 2: Preparatio Gerhart K. Gaulé Book 1965 Springer Science+Business Media New York 1965 chemistry.inorganic chemistry.preparat

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樓主: coherent
11#
發(fā)表于 2025-3-23 09:50:40 | 只看該作者
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發(fā)表于 2025-3-23 23:41:23 | 只看該作者
Trap-Dominated Electrical and Optical Effects in Crystalline Borontion in the near infrared after illumination with visible light. Since boron is opaque for wavelengths shorter than 0.8 . , the photoexcitation must occur in a thin surface layer of the crystal. Typical experiments are performed in three phases, namely, (1) photoexcitation, (2) observation of fast a
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發(fā)表于 2025-3-24 03:55:54 | 只看該作者
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發(fā)表于 2025-3-24 16:36:12 | 只看該作者
https://doi.org/10.1007/978-3-662-12389-8 (silicon, copper, gold, tungsten, and magnesium). Carbon and silicon, in contrast to germanium, cause electron paramagnetic resonance with a . value about 2. 003. A similar resonance is found in B.C.; in both cases, it is probably related to unsaturated bonds of a radical type induced by the foreign atoms.
19#
發(fā)表于 2025-3-24 20:35:01 | 只看該作者
Electron Paramagnetic Resonance, Electrical Conductivity, and Impurity Diffusion in Doped Boron (silicon, copper, gold, tungsten, and magnesium). Carbon and silicon, in contrast to germanium, cause electron paramagnetic resonance with a . value about 2. 003. A similar resonance is found in B.C.; in both cases, it is probably related to unsaturated bonds of a radical type induced by the foreign atoms.
20#
發(fā)表于 2025-3-25 02:23:41 | 只看該作者
Prozesse als Abl?ufe verteilter Systeme The main impurity in our boron is carbon (30–50 ppm). Because of the unfavorable distribution coefficient for carbon in boron (approx. 4), removal by zone-refining is very time-consuming. A coulometric, method to determine carbon in boron is discussed.
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