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Characterization and investigation of delta ferrite concentrations in stainless steel welded samples using Micro Magnetics' SpinTJTM Series magnetic tunneling junction sensors Fall River, MA - June 20, 2013 - Using Micro Magnetics' SpinTJTM Series magnetic tunneling junction (MTJ) sensors, scientists from University of California Davis and Los Alamos National Laboratory have developed a scanning magnetic microscope that is capable of detecting metal defects with high sensitivity (~10 T/FN) and improved spatial resolution. Theis microscope represents a powerful tool for the characterization and measurement of delta ferrite concentrations in stainless steel welded samples. The research by the scientists expands the MTJ sensor's applications into the field of metal defect detection, which is of great interest for the aeronautical, nuclear and magnetics industries that employ ferromagnetic materials in their products. The research has been presented in a recent scientific paper entitled "Ferrite Scanning Microscope Based on Magnetic Tunnel Junction Sensor" published in the journal of IEEE Transactions on Magnetics, downloadable here. About Micro Magnetics Micro Magnetics is a leader in commercial applications of spintronics, a new technology that combines
the properties of electron spin and charge to enable devices to deliver superior and
unprecedented performance.
The company provides innovative solutions, products, and services in semiconductor metrology and ultra-sensitive
magnetic field sensing. For more information, visit For further information please contact: Micro Magnetics, Inc.
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