Multiple step shifted-magnetizing method to improve performance of multi-pole array magnet

An apparatus for forming a magnetic assembly, comprising:

• a processor, and in communication with the processor:
• a magnetizer comprising at least one magnetic element configured to provide a magnetic field during a first magnetization operation;
• a fixture arranged to secure a substrate during the first magnetization operation and shift the substrate a distance in accordance with instructions provided by the processor;
• and
• a magnetometer configured to detect magnetic fields, wherein subsequent to the first magnetization operation, the magnetometer is operable to:
• (i) determine a size and location of at least two adjacent magnetic regions, (ii) determine a distance between the at least two adjacent magnetic regions corresponding to a width of a neutral zone, and (iii) provide the width of the neutral zone to the processor, and
• wherein the processor is operable to:
• (a) instruct the fixture to move the substrate to another position, and (b) instruct the magnetizer to initiate a second magnetization operation.

A non-transient computer readable medium for controlling an operation of an apparatus for forming a magnetic assembly, the apparatus including a processor, and in communication with the processor, a magnetizer, a movable fixture for securing a magnetic substrate, and a magnetometer, comprising:

• computer code for forming a magnetized substrate by causing the magnetizer to carry out a first magnetization operation on the magnetic substrate;
• computer code for causing the magnetometer to measure a width of a neutral zone between at least two adjacent regions of the magnetic substrate magnetized during the first magnetization operation;
• computer code for causing the movable fixture to shift the magnetic substrate by an amount commensurate with the width of the neutral zone measured by the magnetometer;
• and
• computer code for causing the magnetizer to carry out a second magnetization operation on the shifted magnetic substrate.