Strontium ferrite powder

For magnetic applications, the use of strontium ferrite powder has been characterised (234). The use of barium ferrite has been optimised (362). 

It has been established that the introduction of small amounts (0.5-2 wt%) of a ferromagnetic matter (barium ferrite or strontium ferrite powder) significantly intensifies the saturation of Cl in the polymer matrix. With this aim, extruded hose filled with the ferrite is treated in the contact zone... 

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Thermal conductivity studies have been conducted on a wide range of filled polymers and composites including carbon-fibres [2,37-43], aluminium powder [40], aluminium nitride [41], magnetite, barite, talc, copper, strontium, ferrite [42], glass fibre filled PP [44] and manganese and/or iron filled polyaniline [42]. 

The hydrolysis of a mixture of metal alkoxides forms a fairly successful route for the synthesis of complex oxide powders (67). However, most metal alkoxides are expensive, and their hydrolysis requires carefully controlled conditions because of their sensitivity to moisture. The controlled hydrolysis of a mixture of salt solutions appears to be more difficult, but its use has been demonstrated by Matijevic (61) for a few systems, including barium titanate and strontium ferrite. 

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