METHOD OF CONTROLLING MAGNETIZATION EASY AXIS IN FERROMAGNETIC FILMS USING VOLTAGE, ULTRAHIGH-DENSITY, LOW POWER, NONVOLATILE MAGNETIC MEMORY USING THE CONTROL METHOD, AND METHOD OF WRITING INFORMATION ON THE MAGNETIC MEMORY전압을 이용한 강자성박막의 자화용이축 제어방법 및 이를이용한 비휘발성, 초고집적, 초절전형 자기메모리와정보기록방법

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A method of controlling a magnetization easy axis of a ferromagnetic film, an ultrahigh-density, low power, nonvolatile magnetic memory using the control method, and a method of writing information on the magnetic memory. The method includes the step of arranging an electrode layer, a piezoelectric layer and a magnetic layer in a layered structure. Voltage is applied to the electrode layer to generate an electric field. Thereafter, lattice change is caused in the piezoelectric layer using the generated electric field. A magnetization easy axis of the magnetic layer is reversibly switched between in-plane and out-of-plane by exerting stress generated by the lattice change onto the magnetic layer.
Assignee
KAIST,Seoul National University
Country
US (United States)
Issue Date
2004-12-07
Application Date
2002-11-05
Application Number
10288613
Registration Date
2004-12-07
Registration Number
6829157
URI
http://hdl.handle.net/10203/232568
Appears in Collection
RIMS PatentsMS-Patent(특허)
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