Zobrazeno 1 - 4
of 4
pro vyhledávání: '"J.M.Martín Llorente"'
Publikováno v:
Spectroscopy Letters. 25:49-54
The very different optical spectra found for the green coloured Y2BaNiO5 and the substituted brown-tobacco Y2BaNi1−xZnxO5 oxides have been explained taking account the different crystal structure which show these oxides. In this sense, Y2BaNiO5 sho
Publikováno v:
Journal of Solid State Chemistry. 93:461-468
The magnetic susceptibility of Y 2 BaNiO 5 has been measured in the range 4.2–800 K. The broad maximum in the χ vs T plot centered at 420 K is indicative of the existence of low-dimensional antiferromagnetic ordering along the chains of vertex sha
Publikováno v:
Carbon. 26:681-685
The adsorption isotherms of N 2 and Ar at 77 and 90 K on a pyrolytic graphite produced by Union Carbide (U.S.A.) were studied. All the isotherms belong to type II of the IUPAC classification and both at 77 and 90 K neither the N 2 nor the Ar isotherm
Publikováno v:
Carbon. 26:205-211
A study was conducted on the porosity of an “Agot” grade nuclear graphite using the Pierce method applied to the desorption isotherms of nitrogen at a temperature of 77 K. The study was completed by the mercury porosimetry technique. Using the ad