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Dynamic switching process of sandwich-structured MR elements
The dynamic behavior of sandwich-structured magnetoresistive (MR) memory elements is studied analytically by solving Gilbert's equation together with the one-dimensional micromagnetic torque equation. The typical element is 2 mu m*20 mu m and consists of two 150-AA thick magnetic layers separat...
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Published in: | IEEE transactions on magnetics 1989-09, Vol.25 (5), p.4269-4271 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The dynamic behavior of sandwich-structured magnetoresistive (MR) memory elements is studied analytically by solving Gilbert's equation together with the one-dimensional micromagnetic torque equation. The typical element is 2 mu m*20 mu m and consists of two 150-AA thick magnetic layers separated by a 50-AA thick nonmagnetic layer. The easy axis is along the short dimension of the element. The theoretical study shows that wall nucleation is present when the switching is driven by a field applied in the easy-axis direction, whereas switching by a field in the hard-axis direction is accomplished by coherent rotation. The switching speed predicted by this one-dimensional model is in the nanosecond range and increases linearly with the external fields.< > |
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ISSN: | 0018-9464 1941-0069 |
DOI: | 10.1109/20.42591 |