Materials Literature
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Abstract Calibration of the internal and external signals appearing at g eff ∼4 in the electron paramagnetic resonance (EPR) spectra of twenty-four kaolinites, has led to the recognition of two types of kaolinite-iron. The amount of iron associated with the internal signal (I iron) shows good inverse correlations with…
X-ray dichroism is observed in crystalline vanadyl bisacetylacetonate, VO2+.2(C5H7O2)-, near the vanadium K edge in absorption experiments with linearly polarized synchrotron radiation. The Kossel structure is polarized as a result of the symmetries of molecular orbitals in this strongly anisotropic molecule. The exte…
J N Sherwood (ed) 1979 Chichester: John Wiley xxvi + 383 pp price £19.50 It is a common phenomenon that crystals made of essentially spherical molecules, e.g. CCI 4 , undergo several phase transitions as the temperature is raised towards the melting point. The higher temperature phases are usually orientationally diso…
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The elastic constants measurements have been made for the first time on a single crystal of the near-equiatomic NiTi alloy. The results show that the elastic constants C′ and C44 both have a low value and a positive slope with temperature; this behavior makes NiTi unique in the class of alloys showing a martensitic tr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Interpretation of the Glass Transition Temperature of Polymer-Diluent SystemsT. S. ChowCite this: Macromolecules 1980, 13, 2, 362–364Publication Date (Print):March 1, 1980Publication History Published online1 May 2002Published inissue 1 March 1980https://pubs.acs.o…
Abstract Thermoplastic elastomers are rubbery materials which can be fabricated by techniques usually associated with thermoplastic resins. Classical elastomers rely upon the crosslinked network, developed during vulcanization, to provide the retractive forces of rubber type elasticity. Thermoplastic elastomers contai…
A simple model is proposed to explain how a breakdown avalanche of secondary emission electrons can lead to surface flashover when an insulator in vacuum breaks down a few nanoseconds after high voltage is applied. The case of a plane insulator–vacuum interface perpendicular to parallel electrodes is considered. Posit…
A method of equivalent linearization for smooth hysteretic systems under random excitation is proposed. The hysteretic restoring force is modeled by a nonlinear differential equation and the equation of motion is linearized directly in closed form without recourse to Krylov-Bogoliubov technique. Compared with previous…