Integrated Magnetoresistive Read Inductive Write Film Magnetic Head Assembly
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08
A narrow track thin film magnetic head assembly is formed by depositing a geometrically biased magnetoresistive read element in the gap of an inductive write element with compensating angular pole tips. A geometrically biased narrow track magnetoresistive element is shown in Fig. 1. This element consists of a magnetic sensor stripe 1 comprised of NiFe with a bias layer of Ti conductors 2. When a bias current is applied to an element in this configuration, the current will flow across the sensor stripe in a path perpendicular to the conductors. This produces an angle between the bias current and the sensor stripe magnetization, causing the device to operate in the linear portion of its characteristic response curve. This effect, more commonly called barberpole biasing (*), is known to improve performance.