| 摘要 |
An audio magnetic recording medium includes a magnetic material carrier backing and a layer of a magnetic material thereover comprising magnetic particles dispersed in a binder, the magnetic particles having a thin coating thereon of a rare earth-containing material, preferably samarium pentoxide. The amount of the rare earth-containing material in the recording medium is only a small percentage by weight of the coated magnetic particles so as not to adversely effect the erasability of the magnetic record to be recorded, but is of sufficient amount to improve the frequency response, signal to noise ratio, or channel separation characteristics thereof.
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