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The synthesis and characterisation of Co2X (Ba2Co2Fe28O46) and Co2U (Ba4Co2Fe36O60) ferrite fibres, manufactured from a sol-gel process
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UNSPECIFIED (2001) The synthesis and characterisation of Co2X (Ba2Co2Fe28O46) and Co2U (Ba4Co2Fe36O60) ferrite fibres, manufactured from a sol-gel process. JOURNAL OF MATERIALS SCIENCE, 36 (19). pp. 4805-4812. ISSN 0022-2461.
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Abstract
The X and U phases of hexagonal ferrites are notoriously difficult to make as pure materials, and what little data there is published regarding their physical or magnetic properties relates only to single crystals. Stoichiometric Co2X and Co2U fibres were made from a sol-gel based process, and the characteristics of the sols and fibres were studied using PCS, XRD, SEM and VSM. The evolution of the X and U fibres was studied, and shown to be similar that of the W and Z fibres whose structures they respectively resemble. Co2X and Co2U had been formed at 1200 degreesC, and the morphology of the fibres was different from those of the W and Z phases. The magnetic properties, again while resembling the W and Z phases, were different to any of the other hexagonal ferrite fibres. The magnetic hysteresis loops of both fibres were magnetically as was, the Co2X fibres having M-s = 45.0 emu g(-1) and H-c = 0.085 T, and the Co2U fibres having M-s = 51.5 emu g(-1) and H-c = 0.059 T. (C) 2001 Kluwer Academic Publishers.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
Journal or Publication Title: | JOURNAL OF MATERIALS SCIENCE | ||||
Publisher: | KLUWER ACADEMIC PUBL | ||||
ISSN: | 0022-2461 | ||||
Official Date: | 2001 | ||||
Dates: |
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Volume: | 36 | ||||
Number: | 19 | ||||
Number of Pages: | 8 | ||||
Page Range: | pp. 4805-4812 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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