| http://www.w3.org/ns/prov#value | - In FIG. 3, reference numeral 30 denotes a metallic layer made of the same material and provided with the same layer thickness as those of the lower shield layer of the MR head, and 31 denotes an insulation layer made of the same material as that of the shield gap insulation layer of the MR head but provided with a layer thickness of for example 0.1 ??m which is larger than that of the lower shield
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