Head-slider including thin-film magnetic-recording head having reduced thermal protrusion
A head-slider. The head-slider includes a slider, and a thin-film magnetic-recording head. The thin-film magnetic-recording head includes: a read element; a write element; a non-magnetic insulating protective layer disposed around both read and write elements; a resist disposed at a position further away from an air-bearing surface than the read element; and, a hard-material member including a material selected from the group consisting of silicon carbide and tungsten, which is disposed at a position further away from the air-bearing surface than the read element and the write element. Both an end of the resist and an end of the hard-material member overlap the write element when viewed in a stacking direction. A ratio of a distance from the air-bearing surface to a deepest end of the hard-material member to a distance from the air-bearing surface to a deepest end of the resist is at least 0.9.
1. A head-slider comprising:
a slider; and
a thin-film magnetic-recording head formed by stacking a plurality of layers on said slider, said thin-film magnetic-recording head comprising:
a read element for reading data;
a write element for writing data;
a non-magnetic insulating protective singular layer disposed around said read element and said write element, such that said non-magnetic insulating protective singular layer surrounds said read element and said write element;
a resist disposed at a position further away from an air-bearing surface than said read element, an end of said resist on an air-bearing surface side overlapping said write element when viewed in a stacking direction of said thin-film magnetic-recording head; and
a hard-material member having a thickness less than said resist and disposed directly adjacent to said resist and extending in a vertical direction away from said air-bearing surface farther than said resist and comprising a material selected from the group consisting of silicon carbide and tungsten, which is disposed at a position further away from said air-bearing surface than said read element and said write element, an end of said hard-material member on said air-bearing surface side overlapping said write element when viewed in a stacking direction of said thin-film magnetic-recording head, and a ratio of a distance from said air-bearing surface to a deepest end of said hard-material member to a distance from said air-bearing surface to a deepest end of said resist being at least 0.9.
2. The head-slider of claim 1 , further comprising:
a coil for generating a magnetic field, said coil being formed by connecting conductive lines in an upper layer and conductive lines in a lower layer;
wherein said resist is disposed behind said conductive lines in said lower layer.
3. The head-slider of claim 2 , wherein said hard-material member is disposed in a lower layer than said conductive lines in said upper layer.
4. A head-slider comprising:
a slider; and
a thin-film magnetic-recording head formed by stacking a plurality of layers on said slider, said thin-film magnetic-recording head comprising:
a read element for reading data;
a write element for writing data;
a non-magnetic insulating protective singular layer disposed around said read element and said write element, such that said non-magnetic insulating protective singular layer surrounds said read element and said write element;
a resist disposed at a position further away from an air-bearing surface than said read element and said write element;
a hard-material member having a thickness less than said resist and disposed directly adjacent to said resist and extending in a vertical direction away from said air-bearing surface farther than said resist and comprising a material selected from the group consisting of silicon carbide and tungsten, which is disposed at a position further away from said air-bearing surface than said read element and said write element; and
a lower shield and an upper shield sandwiching said read element above and under said read element, a ratio of a cross-sectional area of said resist to said cross-sectional areas of said lower shield and said upper shield being at least 3.5.
5. The head-slider of claim 4 , further comprising:
a coil for generating a magnetic field, said coil being formed by connecting conductive lines in an upper layer and conductive lines in a lower layer;
wherein said resist is disposed behind said conductive lines in said lower layer.
6. The head-slider of claim 5 , wherein
said hard-material member is disposed in a lower layer than said conductive lines in said upper layer.