In-line magnetic thickness measuring instrument
max. 1.7 T | DiskMapper M3 MicroSense, LLC

The DiskMapper M3 is a magnetic thickness mapping system that provides non-contact, non-destructive magnetic characterization of the recording layer of perpendicular magnetic recording (PMR) media. The system measures the uniformity of critical magnetic properties, such as the remanence thickness product (Mrt), the remanence coercivity (Hr), and the remanent nucleation field (Hnr), providing feedback for deposition process control.

Benefits:
Patented recording layer Mrt measurement is independent of the soft under layer (SUL), providing unique feedback to control the uniformity of media properties
Perpendicular write head with maximum field exceeds current production requirements for the characterization of Mrt, Hr and Hnr
Universal read and write heads allow easy conversion between all industry-standard media sizes
Non-contact, non-destructive mapping provides feedback to minimize variation of magnetic properties over the disk surface