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首页> 外文期刊>IEEE Transactions on Magnetics >High-resolution magnetooptic imaging of the high-frequency magnetic behavior of ferrite recording heads
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High-resolution magnetooptic imaging of the high-frequency magnetic behavior of ferrite recording heads

机译：铁氧体记录头高频磁行为的高分辨率磁光成像

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摘要

The magnetic response in the vicinity of the gap of a ferrite recording head has been imaged magnetooptically at frequencies of up to 50 MHz with a spatial resolution of under 0.5 mu m. The measurements show that different grains in the ferrite provide different amplitude and phase of response, presumably as a result of their different crystalline orientations. Magnetic activity across grain boundaries is evident, indicating small magnetic discontinuities between grains. The results graphically demonstrate the potential for magnetic nonuniformities in polycrystalline ferrites, and they show that heads using such ferrites may exhibit less than desirable behavior for track widths nearly as narrow as the grains.
机译：铁氧体记录头间隙附近的磁响应已磁光成像，频率高达50 MHz，空间分辨率小于0.5μm。测量结果表明，铁素体中的不同晶粒可提供不同的响应幅度和相位，这大概是由于其不同的晶体取向所致。跨晶界的磁活动是明显的，表明晶粒之间的磁间断很小。结果以图形方式显示了多晶铁氧体中磁不均匀的可能性，并且他们表明，使用这种铁氧体的磁头对于几乎与晶粒一样窄的磁道宽度可能表现出不理想的行为。

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