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Magnetic Nanostructures and Materials in Magnetic Random Access Memory

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Abstract:

The advances in magnetic random access memory provide a remarkable showcase for the rapid development and application of nanodevices. Several aspects of state-of-the-art magnetic nanoscience and nanotechnology are developed and utilized in this single device. Current magnetic random access memory design is built upon the discovery and understanding of physics issues such as giant magnetoresistance, spin-dependent tunneling, exchange bias, and magnetic anisotropy in small elements. Successful magnetic random access memory development requires future research in some of the key areas involving nanotechnology. For example, the uniformity of the barrier thickness across the entire device and magnetic switching stability of a nanosized element are challenging issues that lie ahead. The spin degree of freedom of electrons is an added dimension that is both unique and useful in electronic transport and information technology. Non-volatile, high-density, high-speed, and low-power magnetic random access memory is one of the first examples of the application of spintronics.

Keywords: EXCHANGE BIAS; GIANT MAGNETORESISTANCE; HALF-METAL; MAGNETIC RANDOM ACCESS MEMORY; MAGNETIC TUNNELING JUNCTION; SPIN VALVE; SPINTRONICS; TUNNELING MAGNETORESISTANCE

Document Type: Review Article

DOI: http://dx.doi.org/10.1166/jnn.2002.112

Affiliations: 1: Department of Physics, University of New Orleans, New Orleans, Louisiana 70148, USA 2: Sharp Laboratories of America, Inc., Camas, Washington 98607, USA

Publication date: July 1, 2002

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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