Design optimization of plannar type write heads for ultra high density magnetic recording

摘要

PURPOSE: A method for optimizing characteristics of a planner type recording head for super high density magnetic recording is provided to record information on a medium having high magnetocrystalline anisotropy by realizing a high recording magnetic field. CONSTITUTION: A characteristic of a recording head is optimized by changing shape parameters of the recording head by first, second, and third head-trimming methods having predetermined parts of the recording head as shapes and sizes of a, b, and c. In the first head-trimming method, b and c are fixed as predetermined values, and only a is changed, so that a head-trimming part has a step-like shape. In the second head-trimming method, a and c are fixed as predetermined values, and b becomes smaller, so that the characteristic of the head has a similar shape to the shape of the first head-trimming method. In the third head-trimming method, b and c are fixed as predetermined values, only a is changed, so that the characteristic of the head has a similar shape to the shape of the first head-trimming method.