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Magnetism: isolated trimers

Fig. 32. Magnetic behavior of Sr3Cu3(P04)4. The full line corresponds to the theoretical behavior for interconnected trimers within chains, the dashed line to isolated trimers... Fig. 32. Magnetic behavior of Sr3Cu3(P04)4. The full line corresponds to the theoretical behavior for interconnected trimers within chains, the dashed line to isolated trimers...
A rather exhaustive survey of the possible substitutions in this structure showed the Ba7MuFe6F34 phases to form only for a few M2+ ions (M2+ = Cu2+, Mn2+, Fe2+) [2,4], all of them magnetic ones, a ID magnetic behavior being therefore observed in all cases the creation of isolated Fe3+ trimers was nevertheless possible in Ba7LiNaFe6F34 [5], where the Li+ ion occupies the M2+ site, whereas an Na+ is... [Pg.283]

Fig. 31. Magnetic behavior of Ca3Cu3(P04)4. The dashed line would correspond to isolated coppcr(II) trimers. Id intercluster correlations give rise to the strong increase of %-T observed at low temperature. The result of the fit is given as a full line... Fig. 31. Magnetic behavior of Ca3Cu3(P04)4. The dashed line would correspond to isolated coppcr(II) trimers. Id intercluster correlations give rise to the strong increase of %-T observed at low temperature. The result of the fit is given as a full line...
We will now discuss the behavior of a new magnetic species, made of two iron(III) and one copper(II) exchange-coupled in the symmetrical lineal trimer (Fe-Cu-Fe). Such a system was isolated in the usovite-type fluoride Ba2CaCuFe2F14 [83],... [Pg.93]

The phase composition of the VOSO4-K2SO4 system at 360 and 500 °C has been investigated using X-ray diffraction and i.r. spectroscopy the formation of 2 1, 1 1, and 1 2 double salts was confirmed. E.s.r. spectroscopy has been used to follow the extraction of VO ", from aqueous solutions by di-n-butyl phosphate in hexane, and monomeric and trimeric V0 02P(0Bu)2 2 complexes were identified. [V0 02p(0Bu)2 2]3 was isolated as a crystalline solid from the hexane solution and shown to contain a magnetic exchange interaction between the three metal centres. The hypophosphito-complex. [Pg.50]

In addition to the yellow-orange trimer mentioned above, a large amount of a red derivative was also isolated, whose spectrum is shown in the lower part of the figure. Analysis, molecular weight and magnetic and chemical properties of this derivative will be reported. This second compound may be related to the red carbonyl hydride of manganese reported by HIEBER, BECK and ZEITIER (4). obtained by similar chemical transformations on the... [Pg.256]

See other pages where Magnetism: isolated trimers is mentioned: [Pg.310]    [Pg.184]    [Pg.188]    [Pg.94]    [Pg.196]    [Pg.453]    [Pg.295]    [Pg.557]    [Pg.1674]    [Pg.161]    [Pg.56]    [Pg.90]    [Pg.107]    [Pg.189]    [Pg.256]    [Pg.374]    [Pg.3033]    [Pg.103]   
See also in sourсe #XX -- [ Pg.310 ]



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