- Tuesday, March 24, 2009
- Published at:IEE- Electronics and Power Mag
- The magnetoresistive (MR) effect has been known for more than 100 years, but only recently it has been developed and exploited in thin film ferromagnetc films. These developments have led to the wider application of MR transducers
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- Tuesday, March 24, 2009
- Published at:European Patent Office - Application No. 0075413 - 1989
- The magneto resistive effect has been known for over 100 years but only in recent years has been exploited in magnetic thin film for the retrieval of information in magnetic tapes , discs , drums and bubble devices . The present patent is however concerned wit the use of the magneto resistive detectors for the identification and validation of coins and /or materials, an application which has not been reported in the literature
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- Tuesday, March 24, 2009
- Published at:J.Physics E: Sci. Instrum
- A versatile high magnification Kerr magneto-optic microscope and measuring electronic system has been developed from a design based on a single objective lens . An analogue to digital signal recovery system enabled measurements of the surface magnetization levels to be obtained at high magnification on well defined areas of less than 4 µm X 4 µm on optically imperfect surfaces. Use of the equipment in the transverse, polar or longitudinal mode is possible and it’s application to dynamic magnetization measurements ( for example in bubble domain propagation elements ) and static domain wall structure is described
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- Tuesday, March 24, 2009
- Published at:Electronics and Optics -Thin Solid Films 89 - 239-242
- Result as are presented of the magnetization distribution in real size NI-FE bubble overlay I- Bars of differing dimensions and for various in plan applied rotating fields. In addition, measurements have bee made of the approach to saturation at the center of the I-bars. The results are compared with previous experimental and theoretical results , all of which indicate that the magnetization within the bars are strongly influenced by the demagnetization effects .
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- Tuesday, March 24, 2009
- Published at:IEEE Transactions on magnetic. Vol. Mag-17 No.6
- A high magnification Kerr magneto optic microscope and ferro fluid techniques have been used to investigate the magnetization distributions and domain patterns on 90⁰ Chevron elements, under rotating applied field conditions. Considerable magnetic interactions have been observed to exist between the magnetization levels in the orthogonal legs of the chevrons. The magnitude of the interaction effects are dependant upon the orientation of the applied field relative to the legs of the chevron
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