Magnetic Faraday balance

Table 4J. Faraday magnetic balance study of the redox behaviour of two ccria-supported rhodium catalysts prepared from Rh(NO))j (N) and RhCi> (Cl) metal precursors. Metal loading and BET surface area of the catalysts were 3 wt% and 49 m g respectively. Data taken from(i95).

Bur] Faraday type balance Magnetic phase transition... 

Figure 2. Variation of the saturation magnetization of 1 mg iron metal with tern-perature as recorded by a Faraday balance. Note that the apparent weight (saturation magnetization) of iron is much greater than its actual weight.

Magnetic susceptibility measurements were carried out using a Faraday Balance from 77 to 300 K with a field strength of 10.4 kOe. Honda-Owen (field dependency) measurements were carried out at both 77 and 296 K. 

When a substance is subjected to magnetic field H, and a magnetization I is induced. The ratio I/H is called the volume susceptibility k and can be measured by a number of techniques, including Gouy balance method, Faraday method and an nmr method. The volume susceptibility is related to the gram susceptibility c and the molar susceptibility cm. 

Although for p-azoxyanisole (PAA) a number of measurements in electric fields have been reported (I, 5), only Foex ( ) reported measurements in a high magnetic field. In this paper we report the results of magnetic susceptibility measurements on PAA, which have been obtained by using the Faraday method with a sensitive balance described by Poulis et al. (6). The sample consisted of 0.2841 gram of PAA held in an evacuated spherical quartz container. Measurements were made at fields of 2550, 1050, 275, and 200 oersteds at a number of temperatures in the liquid crystal and liquid phase. The absolute accuracy of the susceptibility measurements was about 3%, determined by the irreproducibility in the adjustment of... 

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