A room-temperature electrical field–controlled magnetic memory cell
| Autor: | M. Van Kampen, Lieven Lagae, Gustaaf Borghs, C. Cavaco |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
business.industry Mechanical Engineering Magnetostriction Coercivity Condensed Matter Physics Lead zirconate titanate Piezoelectricity Ferroelectricity Magnetic field chemistry.chemical_compound chemistry Ferromagnetism Mechanics of Materials Electric field tunnel-junctions Optoelectronics General Materials Science business |
| Zdroj: | Journal of Materials Research. 22:2111-2115 |
| ISSN: | 2044-5326 0884-2914 |
| DOI: | 10.1557/jmr.2007.0274 |
| Popis: | We present a method that allows changing the anisotropy and the magnetic characteristics of piezoelectric–ferromagnetic hybrid structures by electric fields, thereby suppressing the need for external or local magnetic fields. We have investigated the magnetic properties of single Co50Fe50 and CoFe80B20 magnetostrictive thin films as well as of high-quality bottom-pinned spin valves (SV) sputtered on piezoelectric substrates [lead zirconate titanate (PZT)] and patterned in an interdigitated transducer (IDT). Induction of a uniaxial anisotropy axis and the changes on coercivity and switching fields as a function of the applied bias voltage on the IDT are analyzed and interpreted. The down-scalability of this hybrid method supports the possibility of achieving low-power/low-voltage control of the switching fields and shows the feasibility of a hybrid ferroelectric magnetic memory cell. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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