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Electric-field control of magnetism via strain transfer across ferromagnetic/ferroelectric interfaces

Journal of Physics: Condensed Matter

IOP Publishing

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      Current-driven excitation of magnetic multilayers

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        Multiferroic and magnetoelectric materials.

        A ferroelectric crystal exhibits a stable and switchable electrical polarization that is manifested in the form of cooperative atomic displacements. A ferromagnetic crystal exhibits a stable and switchable magnetization that arises through the quantum mechanical phenomenon of exchange. There are very few 'multiferroic' materials that exhibit both of these properties, but the 'magnetoelectric' coupling of magnetic and electrical properties is a more general and widespread phenomenon. Although work in this area can be traced back to pioneering research in the 1950s and 1960s, there has been a recent resurgence of interest driven by long-term technological aspirations.
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          Magnetic domain-wall racetrack memory.

          Recent developments in the controlled movement of domain walls in magnetic nanowires by short pulses of spin-polarized current give promise of a nonvolatile memory device with the high performance and reliability of conventional solid-state memory but at the low cost of conventional magnetic disk drive storage. The racetrack memory described in this review comprises an array of magnetic nanowires arranged horizontally or vertically on a silicon chip. Individual spintronic reading and writing nanodevices are used to modify or read a train of approximately 10 to 100 domain walls, which store a series of data bits in each nanowire. This racetrack memory is an example of the move toward innately three-dimensional microelectronic devices.
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            Author and article information

            Journal
            Journal of Physics: Condensed Matter
            J. Phys.: Condens. Matter
            IOP Publishing
            0953-8984
            1361-648X
            December 23 2015
            December 23 2015
            November 27 2015
            : 27
            : 50
            : 504001
            10.1088/0953-8984/27/50/504001
            © 2015

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