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Program Highlights for year 2007

A New Generation of Spintronic Devices: MgO Magnetic Tunneling Junctions

We developed a low-pressure magnetron sputtering technique together with the linear dynamic deposition method and successfully fabricated a new type of magnetic tunneling junctions (MTJs) with (001) textured MgO barrier.

Secondary Teacher Interacting with Materials Professors Strikes Gold

Background: The JHU MRSEC conducts extensive K-12 educational outreach programs aimed at promoting interest in and awareness of the importance of modern materials research.

Domains and Domain Wall Motion in Perpendicular Anisotropy Materials

Magnetic thin films with perpendicular magnetic anisotropy (PMA) have special attributes for explorations and perpendicular magnetic recording. We have observed three hitherto unknown new features in materials with PMA: 1. Asymmetrical domain nucleation centers that produce domains for only one magnetization direction (Fig. 1).

New Electronic Material Fits In Where It's Placed

Nano Lett. Doi: 10.1021/nl070613a (2007)

Molecular Nano-Ring Beats Like a Chime

Perfect rings of C60 molecules, lined up around circular layers of silver, reveal an important property of nanoelectronic contacts: thermal energy causes

Novel multiferroic thin film memory devices

Electric-field tunable spin valves are being investigated

Discovery of a Pb-free morphotropic phase boundary (MPB) in a high Tc piezoelectric perovskite

Piezoeletric materials are used for a variety of actuator and sensor applications. Finding a Pb-free replacement for the popular Pb(Zr,Ti)O3 has been a major challenge for the community.

Magnetic Tubules: Cellular Tracks Follow the Field

Motor proteins deliver intracellular cargo to specific locations inside cells. These so-called kinesin motors take 8 nm steps along intracellular highways 25 nm wide called microtubules.

Nano Rotor: Molecular Spin and Slide

Scaling functional machines down to the molecular scale is a key challenge in nanoscale science and technology.

Microinsertion: Placement, Isolation and Patterning

Normally, well, flaws are bad.

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