| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of uneven wear in the sliding part with a magnetic medium by disposing a second nonmagnetic material consisting essentially of CaTiO3 to a first nonmagnetic material consisting essentially of CaO, TiO2 and NiO so as to face the butt surfaces of magnetic core half bodies formed with magnetic metallic thin films and glass. SOLUTION: The second nonmagnetic material (5) consisting essentially of CaTiO3 is disposed to the first nonmagnetic material 4 consisting essentially of CaO, TiO2 and NiO forming a nonmagnetic substrate 6 which constitutes the magnetic core half bodies 2 and 3 so as to face the butt surfaces of magnetic core half bodies 2 and 3 formed with magnetic metallic thin films 7 and the low melting glass 8. As a result, the generation of a difference in level, etc., between the NiTiO3 phase 20 within the nonmagnetic substrate 6 and other CaTiO3 phase and between the magnetic metallic thin films 7 and the low melting glass 8 formed between the magnetic core half bodies 2 and 3 may be prevented.
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