Gouy method

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Results from magnetic susceptibiHty studies have been reported (50—53). Measurements (50) obtained by the Gouy method are shown in Figure 3. These are lower than those of other investigators. However, the temperature dependences of the magnetic susceptibiHties, for the various plutonium allotropes were similar. a-Plutonium single crystals show a slight anisotropy of (54). 

The uncorrected magnetic susceptibility of the cesium alum, determined by the Gouy method using the complex HgCo(NCS)4 as standard, is —0.12 c.g.s. units per gram this has been found to change to —0.03 c.g.s. units after 14 weeks.4... 

Gouy method, 32 4, 10 Graham s salt, 4 4, 5, 6, 7, 10-11, 39 glasslike, 4 41-50 tetrametaphosphates from, 4 20 trimetaphosphate from, 4 44-45 ultraphosphates from, 4 56 Grain coarsening, 31 14 Graphite... 

For the purpose of this calculation it was necessary to know the diffusion coefficient for ligand and whole molecules of hemocyanin (Table I) and the value of the diffusion coefficient for half molecules of hemocyanin. If the level of calcium ion is reduced in pH 9.6 glycine buffer to the point where no whole molecules remain, the half molecules always are contaminated with one-twelfth size (5S) subunits, so that it is impossible to measure directly the diffusion coefficient of half molecules. For a self-associating system, the Gouy method leads to an average diffusion coefficient which is the Z-average, defined by... 

Magnetic susceptibility and magnetization measurements are made by a variety of techniques. These include the Gouy method, the Faraday method, and change in flux methods. Excellent descriptions of the methods as well as their advantages and limitations are available. " ... 

Susceptibilities were determined by the Gouy method, extrapolated to infinite H (though the effect was small), and corrected for core diamagnetism with Selwood s values. Measurements on Lal2.42 between 1.2 and 80 °K. were made by the mutual inductance method. 

In Table II are assembled the compounds for which measurements have been made (so far by the Gouy method) and the results obtained. The behavior of the manganese compound, Mn (05115)2, is especially interesting. This compound has been investigated over the temperature range 4-530°K. (116, 216), and is found to be antiferromagnetic with a Neel temperature of 134 2°K. Earlier results are thereby superseded. 

Measured as Nujol mulls unless otherwise stated. Measured in methanol solution. Measured by the Gouy method on solid samples at 293-298 K unless otherwise stated. Measured in aqueous solution by the NMR method at 295 K. S... 

Fio. 1. Principle of the Gouy method for measuring magnetic Busceptibilities. 

The Faraday method appears to have some definite advantages over the Gouy method for work on powdered samples. 

Magnetic susceptibility measurements were made on the several samples by the Gouy method. Susceptibility isotherms for two temperatures are shown in Fig. 9. These curves gives the susceptibility per gram of chromium in the several catalysts, as a function of chromium concentration. The expected rise of susceptibility with decreasing chromium concentration, and the position of point I are clearly shown, especially at low temperatures. In calculating the susceptibility of chromium in each sample it has been assumed that the susceptibilities of aluminum ions and oxide ions remain constant. This procedure is... 

The specific magnetization of these catalysts was so small that most of them could be studied by the Gouy method. The activity tests for the hydrogenation of benzene were carried out in apparatus like that previously described for similar tests on nickel-alumina catalysts. The reaction temperature was 175°. 

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