標題: Titlebook: Boron; Volume 2: Preparatio Gerhart K. Gaulé Book 1965 Springer Science+Business Media New York 1965 chemistry.inorganic chemistry.preparat [打印本頁] 作者: coherent 時間: 2025-3-21 16:10
書目名稱Boron影響因子(影響力)
書目名稱Boron影響因子(影響力)學科排名
書目名稱Boron網(wǎng)絡公開度
書目名稱Boron網(wǎng)絡公開度學科排名
書目名稱Boron被引頻次
書目名稱Boron被引頻次學科排名
書目名稱Boron年度引用
書目名稱Boron年度引用學科排名
書目名稱Boron讀者反饋
書目名稱Boron讀者反饋學科排名
作者: SPURN 時間: 2025-3-21 23:25 作者: 牛的細微差別 時間: 2025-3-22 04:01 作者: overbearing 時間: 2025-3-22 07:03
Studies on Crystallization of Pure Boronde in a hydrogen atmosphere. The. powder was then melted in an argon atmosphere by induction heating to form rods. The melt was contained either in quartz boats lined with pure boron nitride or in internally water-cooled silver boats. Single-crystal growth was accomplished without using crucible met作者: 脫水 時間: 2025-3-22 11:39 作者: 防御 時間: 2025-3-22 16:36
Carbon Determination in Hyperpure Elemental Boron Using Gas Chromatographywith tin powder, which serves as an accelerator, is burned under controlled conditions in an induction-heated furnace. The gaseous products are passed through a molecular sieve column at an initial temperature of 100°C. The carbon dioxide remains trapped in the molecular sieve, while the oxygen is s作者: Hippocampus 時間: 2025-3-22 17:55 作者: Insatiable 時間: 2025-3-23 00:38 作者: 主講人 時間: 2025-3-23 03:22
Some Results of the Band Structure Calculation of Rhombohedral Boron by the K·p-Methodhedral modifications of boron have such lattices.) The special arrangement of the atoms forming icosahedra is not considered. The possible energy bands can be classified according to their transformation properties under the symmetry operations of .. The K ? p-method allows the conclusion that all t作者: 機械 時間: 2025-3-23 09:13
Conductivity, Hall Effect, Optical Absorption, and Band Gap of Very Pure Boron· 10.Ω-cm at 180°C to 2 and 3. 5 · 10.Ω-cm at room temperature. The band gap ?E., ascertained from the intrinsic range was about 1.42 eV, whereas E.° K obtained from the optical absorption edge was about 1.53 eV. The temperature dependence of the mobility should be more than — 3/2 because of the inf作者: 整潔 時間: 2025-3-23 09:50 作者: Obscure 時間: 2025-3-23 17:10 作者: anus928 時間: 2025-3-23 21:23 作者: infarct 時間: 2025-3-23 23:41
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作者: Reclaim 時間: 2025-3-24 03:55 作者: 路標 時間: 2025-3-24 10:16 作者: 反抗者 時間: 2025-3-24 14:44 作者: 萬花筒 時間: 2025-3-24 16:36
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.作者: hurricane 時間: 2025-3-24 20:35
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.作者: 闡釋 時間: 2025-3-25 02:23
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.作者: intrude 時間: 2025-3-25 05:19
https://doi.org/10.1007/978-3-662-67317-1ts. The polycrystalline rods were then zone-refined to produce single crystals of boron. Single crystals thus produced were characterized in several ways. The techniques used and the results obtained are reported below.作者: expire 時間: 2025-3-25 09:44 作者: Kidney-Failure 時間: 2025-3-25 15:23 作者: Foreknowledge 時間: 2025-3-25 18:05
Purity of Boron Produced by the Decomposition of Diborane and Subsequent Zone-Melting 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.作者: 禮節(jié) 時間: 2025-3-25 23:03
Preparation and Characterization of Single-Crystal Boronts. The polycrystalline rods were then zone-refined to produce single crystals of boron. Single crystals thus produced were characterized in several ways. The techniques used and the results obtained are reported below.作者: 天氣 時間: 2025-3-26 01:12 作者: 憤怒事實 時間: 2025-3-26 07:55 作者: ANIM 時間: 2025-3-26 10:53 作者: GIBE 時間: 2025-3-26 13:59
Grundlagen der Objektorientierung,ubstitution reaction with BCl.. In the infrared spectrum of powdered .-boron, two bands can be assigned to vibrations of boron atoms belonging to the same icosahedron. In BeB. and in tetragonal boron, additional bands are observed which belong to the stretching frequencies of the bonds between neighboring icosahedrons.作者: 止痛藥 時間: 2025-3-26 18:31
https://doi.org/10.1007/978-3-030-84887-3s not possible to determine where the band edges are located, where in the Brillouin zone the transitions between valence and conduction band take place, and whether these transitions will be direct or indirect. Optical measurements together with our group theoretical results could possibly lead to a band model for boron.作者: Antioxidant 時間: 2025-3-26 22:08 作者: thwart 時間: 2025-3-27 01:32
Tetragonal Boron and Borides with Similar Structuresubstitution reaction with BCl.. In the infrared spectrum of powdered .-boron, two bands can be assigned to vibrations of boron atoms belonging to the same icosahedron. In BeB. and in tetragonal boron, additional bands are observed which belong to the stretching frequencies of the bonds between neighboring icosahedrons.作者: 巧思 時間: 2025-3-27 06:09
Some Results of the Band Structure Calculation of Rhombohedral Boron by the K·p-Methods not possible to determine where the band edges are located, where in the Brillouin zone the transitions between valence and conduction band take place, and whether these transitions will be direct or indirect. Optical measurements together with our group theoretical results could possibly lead to a band model for boron.作者: sinoatrial-node 時間: 2025-3-27 12:24
Zustandssicht: Systeme als Zustandsmaschineno be the most satisfactory. Decomposition on boron and other substrates was performed using both hydrogen and vacuum procedures. In some cases, the final product was then zone-refined. Analytical results from emission and mass spectroscopy are given. Advantages and disadvantages of the bromide and iodide processes are compared.作者: Angiogenesis 時間: 2025-3-27 15:23 作者: 滴注 時間: 2025-3-27 17:55 作者: 提名 時間: 2025-3-28 00:55 作者: congenial 時間: 2025-3-28 02:41 作者: 值得尊敬 時間: 2025-3-28 07:21 作者: 帶來墨水 時間: 2025-3-28 14:19
Feigls naturalistische Moralkonzeption,pped holes precedes that of the trapped electrons. The shape of the thermal stimulation curve for the photocurrent in phase 3 of low-temperature experiments depends on the color of the visible light used for the excitation during phase 1. This is probably related to the increase of the absorption co作者: 竊喜 時間: 2025-3-28 15:29
Logischer Entwurf digitaler Systemenegative effect in the film are isotropic with respect to the angle between the directions of the electric current and the magnetic field. The positive effect in the single crystals, however, is anisotropic and may be described by the empirical formula Δ. = . cos.. where the coefficients depend on t作者: 誓言 時間: 2025-3-28 21:32
Carbon Determination in Hyperpure Elemental Boron Using Gas Chromatography05% C under ideal conditions. The time required for a single run is approximately 25 min. The boron samples used in this study contained only a few parts per million of spectrographically detectable impurities. They were prepared by the hydrogen reduction of high-purity BBr. or by the thermal decomp作者: Demonstrate 時間: 2025-3-28 22:55 作者: 充足 時間: 2025-3-29 03:22 作者: confide 時間: 2025-3-29 09:47
Magnetoresistance in Elemental Boronnegative effect in the film are isotropic with respect to the angle between the directions of the electric current and the magnetic field. The positive effect in the single crystals, however, is anisotropic and may be described by the empirical formula Δ. = . cos.. where the coefficients depend on t作者: 過剩 時間: 2025-3-29 14:43 作者: 平庸的人或物 時間: 2025-3-29 17:33 作者: Femine 時間: 2025-3-29 22:48
Recombination Radiation of Boronas used to excite the fluorescence and a high-speed, quartz-prism spectrograph was used to record the emitted radiation. The peak intensity of the luminescence (recombination radiation) at 80°K was found to occur at 1. 55 ± 0. 03 eV.作者: 高興一回 時間: 2025-3-30 01:06
Overview: 978-1-4899-6266-9978-1-4899-6574-5作者: 嚴厲批評 時間: 2025-3-30 07:03 作者: Inferior 時間: 2025-3-30 10:20 作者: offense 時間: 2025-3-30 16:12 作者: Headstrong 時間: 2025-3-30 18:56 作者: 乳汁 時間: 2025-3-30 21:24 作者: 向外 時間: 2025-3-31 02:13
Prozesse als Abl?ufe verteilter Systemeected spectrochemically after the zone-refining. Nevertheless, the purity is controlled with a 2-m grating spectrograph using a DC arc in a nitrogen or argon atmosphere for excitation. Spectrochemical limits of detection are 1 ppm for silicon, and 0. 1–0. 5 ppm for copper, magnesium, calcium, and si作者: mortgage 時間: 2025-3-31 07:38 作者: 色情 時間: 2025-3-31 10:33 作者: 遵循的規(guī)范 時間: 2025-3-31 16:16
https://doi.org/10.1007/978-3-662-67317-1robably due, in large part, to the relative difficulty of obtaining pure material and the fact that it exists in amorphous form and several crystalline modifications. Renewed interest in the properties of this material has been stimulated in recent years by the potential use of boron in semiconducto作者: 衰弱的心 時間: 2025-3-31 21:21
https://doi.org/10.1007/978-3-662-67317-1with tin powder, which serves as an accelerator, is burned under controlled conditions in an induction-heated furnace. The gaseous products are passed through a molecular sieve column at an initial temperature of 100°C. The carbon dioxide remains trapped in the molecular sieve, while the oxygen is s作者: 技術 時間: 2025-4-1 00:37 作者: Gnrh670 時間: 2025-4-1 04:01
Grundlagen der Objektorientierung,vestigation has the composition Al.C.B., are discussed. It is possible to prepare tetragonal boron from BeB 12 by the topochemical substitution reaction . A similar reaction of BeB. with SiCl. yields a boride (Be, Si) B.. This boride can be recrystallized from molten aluminum in the form of single c作者: GROVE 時間: 2025-4-1 07:44
https://doi.org/10.1007/978-3-030-84887-3hedral modifications of boron have such lattices.) The special arrangement of the atoms forming icosahedra is not considered. The possible energy bands can be classified according to their transformation properties under the symmetry operations of .. The K ? p-method allows the conclusion that all t作者: Hamper 時間: 2025-4-1 11:04
Christian Damb?ck,Meike G. Werner· 10.Ω-cm at 180°C to 2 and 3. 5 · 10.Ω-cm at room temperature. The band gap ?E., ascertained from the intrinsic range was about 1.42 eV, whereas E.° K obtained from the optical absorption edge was about 1.53 eV. The temperature dependence of the mobility should be more than — 3/2 because of the inf
