Application of the Magnetoresistive Tensor Model to the Hard Axis Behavior of 81/19 Permalloy Magnetoresistive Sensor Elements

Hard axis (HA) behavioral models for magnetoresistive sensors (from highly ordered thin films) often are developed in such a fashion as to concentrate on the HA behavior only. This work uses a tensor based approach and a single domain concept to demonstrate how to calculate the magnetoresistance (AMR) for a given resistor and concentrates on the in-plane AMR only.