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Artículo
N-acetyl-2,3,4,6-tetra-O-acetyl-N-benzyl-β-D-glucopyranosylamine
(International Union of Crystallography, 1997)
The solid-state conformation of the title compound, C23H29NOIo, has been unequivocally established. The configuration at C 1 is/3-D-glucopyranose and the pyranose ring is essentially a perfect chair. Only the E ...
Artículo
Propiedades magnéticas y nanocristalización de una aleación FeSiBCuNb
(Elsevier, 1997)
La desvitrificación de la aleación amorfa Fe75Cu2Nb3SÍ2Q 5 B9 5 tiene lugar en dos etapas. El principal resultado de la primera etapa es la nanocristalización, que da lugar a una nanofase cristalina Fe,Si homogéneamente ...
Artículo
Optical phonons, crystal-field transitions, and europium luminescence-excitation processes in Eu2BaCoO5: Experiment and theory
(American Institute of Physics Publising LLC, 1994)
The Europium compound Eu2BaCoO5 has been studied by means of Raman and x-ray-absorption spectroscopies. The eigenfunctions and frequencies of the optical normal modes have been calculated from an adequate potential showing ...
Artículo
Microscopic dynamics of glycerol in its crystalline and glassy states
(American Physical Society, 1996)
The dynamics of crystalline glycerol are studied by means of Raman spectroscopy and lattice dynamics calculations employing a semiflexible model to represent the low-lying molecular vibrations. The latter is validated ...
Artículo
Incommensurate instability and lattice dynamics of potassium selenate within a semiempirical rigid-ion model
(American Institute of Physics Publising LLC, 1990)
The lattice dynamics of potassium selenate is analyzed using a rigid-ion model with the selenate groups reduced to rigid bodies. The interatomic forces have been adjusted only using static structural data. The number of ...
Artículo
First order transitions by conduction calorimetry: Application to deuterated potassium dihydrogen phosphate ferroelastic crystal under uniaxial pressure
(AIP Publishing, 1997)
The specific heat c and the heat power W exchanged by a Deuterated Potassium Dihydrogen Phosphate ferroelectric-ferroelastic crystal have been measured simultaneously for both decreasing and increasing temperature at a low ...
Artículo
Alteración de las propiedades mecánicas por formación de precipitado en ZrO2 parcialmente estabilizado con Y2O3
(1993)
Se ha estudiado el comportamiento mecánico a altas temperaturas del Zr02 monocristalino parcialmente estabilizado con 4. 7 mol% de Y 203, mediante ensayos de velocidad de deformación constante, a 1.4xl0·5 s· 1, en aire a ...
Artículo
Evidence of spin disorder at the surface–core interface of oxygen passivated Fe nanoparticles
(AIP Publishing, 1998)
Hysteresis, thermal dependence of magnetization, and coercivity of oxide coated ultrafine Fe particles prepared by inert gas condensation and oxygen passivation have been studied in the 5–300 K range. The results are ...