Patent ID: 6989962
Filing Date: 2006-01-24
Classification: G11B

Abstract:
1. An inductive write element for use in a magnetic data storage system, comprising: a. a substrate b. a lower magnetic pole, constructed at least partially of a high magnetic moment material, having first and second opposite ends; c. an upper magnetic pole, having first and second ends said first end of said lower pole being separated from said first end of said second upper pole by a write gap, and said second end of said first lower pole being electrically connected with said second end of said upper pole, said lower and upper poles together defining a magnetic yoke having a yoke tip portion defined by said first ends of said poles and having a back gap portion defined by said second ends of said poles, said lower pole being situated more closely than said upper pole to said substrate; d. an electrically conductive coil, a portion of which passes through said yoke between said first lower and upper poles between said yoke tip and said back gap; e. an electrical insulator, electrically isolating said coil from said yoke; and f. a thin layer of material having a magnetic moment lower than that of said high magnetic moment material of said first lower magnetic pole disposed between said lower and upper poles at said back gap of said yoke and electrically connecting said lower and upper poles.