Magnetic domain detection ferrofluid P-series is a developer to observe optically magnetic patterns of all magnetized materials such as Video Tape, Floppy Disc, Hard Disc and magnetic Head etc.
|P-0601||Hydrocarbon||10.0 mT||2 mPa·s>||Domain detection|
|P-0801||Water||6.0 mT||5 mPa·s>||Domain detection|
magnetic domain of hard Disc
magnetic domain of thin permalloy film
The magnetic domain of thin permally film of which thickness is 500Å can be observed by a magnetic colloid method and the examples are shown below.
1. 20μm×150μm of rectangular pattern
The fine magnetic domain such as cross-tie wall can be observed clearly under one thousand magnification.
Even the closure domain 20μm×20μm of small pattern is observed easily.