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Chapter
Layer Rigidity in Intercalation Compounds
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Chapter
The Structure, Morphology and Layer Rigidity of Clay Intercalation Compounds
Intercalation compounds generally consist of porous host structures which can ingest a variety of guest species into the pore spaces with little or no distortion of the host structure itself. 1–3 The porous regio...
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Chapter
Layer rigidity of clay intercalation compound: [Me4N+]1−x [Me3NH+]x −V
Vermiculite is an Alumino-Silicate clays which is one of the layered materials that can form intercalation compounds [1–3]. The host layer of Vermiculite is classified as a 2:1 layered silicate due to its stru...
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Chapter
X-ray and Neutron Scattering Studies of Graphite Intercalated with Two-Dimensional K-NH3 Metal-Ammonia Solutions
The potassium-ammonia ternary graphite intercalation compounds (T GIC’s) K(NH3)xC24, 0 ≤ × ≤ 1, and their deuterated counterparts have been of considerable recent interest. 1–3 This interest results from the poss...
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Chapter
A Field Emission Stem Study of the Br Distribution in Brominated Graphite Fibers
Brominated pitch based graphite fibers exhibit certain novel properties and potential applications [1,2]. For example, it has been observed that an 18 fold reduction of their resistivities of the pitch-based g...
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Chapter
Evidence for a Two-Dimensional Metal-Insulator Transition in Potassium-Ammonia Graphite
We have studied the ammonia pressure dependence and composition dependence of the a-axis electrical resistivity of the potassium-ammonia ternary graphite intercalation compounds K(NH3)XC2 4, O < × < 4.33. Our res...
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Chapter
Alumino-Silicate Clays and Clay Intercalation Compounds
Intercalation compounds formed from graphitic host materials and from layer dichalcogenides such as TaS2 and HfSe2 are quite familiar to most solid-state physicists and chemists who have extensively studied the p...
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Chapter
Kinetics and Diffusion in Graphite Intercalation Compounds
Serious and systematic studies of the kinetics of intercalation of graphite intercalation compounds (GIC’s) were first carried out by Hooley [1,2] who investigated the bromination of various forms of graphite ...
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Chapter
Ternary Graphite Intercalation Compounds
Ternary graphite intercalation compounds (T GIC’s) are materials which contain two distinct intercalant species in the host galleries. The two species may be donor ions such as potassium and rubidium [1], acce...
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Chapter
In-Plane Elastic Neutron Scattering from the Ternary Graphite Intercalation Compound K(ND3)4.38C24
In-plane elastic neutron scattering studies of K(ND3)XC24 were carried out to further test and refine the x-ray derived structural model [1] of the 2D K-NH3 liquid intercalant layers. Additional structural inform...
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Chapter
Phonon Properties of Graphite Intercalation Compounds
Graphite intercalation compounds (GIC’s) exhibit a rich and varied range of vibrational excitations or phonons which have been extensively studied during the past decade and heavily reviewed [1–3]. Several tec...
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Chapter and Conference Paper
Graphite Intercalated with Potassium and Ammonia—A Metal-Ammonia Solution in Two Dimensions
Several decades ago Rudöff and his coworkers [1] showed that graphite could be readily intercalated by metal-ammonia solutions (M-NH3 where M = alkali metals, rare earth metals, etc.) if the host material was dir...
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Chapter
Structural Properties of Two-Dimensional Metal-Ammonia Liquids in Graphite
The vast literature on three-dimensional (3D) bulk metal-ammonia solutions1–3 is testimony to the importance of these novel fluids as arenas for the study of the metal-insulator (M-I) problem.4 Since phase transi...
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Chapter and Conference Paper
The Raman Spectrum of EuC6: A Clue to Understanding Light Scattering from Stage 1 Alkali Gic’s
The room temperature Raman spectrum of EuC6 has been recorded and is found to exhibit a Fano-broadened band at 1500 ± 5 cm-1 and an additional feature at 1840 ± 10 cm-1. The latter feature is attributed to crysta...
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Chapter and Conference Paper
X-Ray Diffraction from Graphite Intercalation Compounds Under Hydrostatic Pressure
X-ray diffraction studies of pressure-induced intralayer and interlayer structural phase transitions in alkali GIC’s are discussed with particular emphasis on KC24 and CsC36. It is shown that such transitions inv...
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Chapter and Conference Paper
Raman Studies of the Semiconductor to Metal Transition in Ge(As)
Using a YAG laser operating at 2.1 µm, polarized Raman spectra of Ge(As) have been measured as a function of impurity concentration. The impurity concentration ranged from, 6.3 × 1015 cm−3 (semiconducting regime)...