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Molecules on a string, and why size isn't the only thing that matters for data storage
Date:9/14/2009

his switching unfolds in a more complicated manner than was previously thought. Their work is published in Physical Review Letters and highlighted in the September 14 issue of Physics (http://physics.aps.org).

Scientists have long known that spin flipping becomes more likely as the size of a nanoparticle cluster dwindles. But Stefan Krause and his team discovered that this is not the end of the story. Flipping happens as a kind of chain reaction along a cluster, and the shape of a cluster can help or hinder this propagation. Manipulating the shape of a cluster and even inserting impurities can determine whether a switch is more or less likely to be triggered and propagate, potentially adding a new dimension of control to the design of magnetic devices.


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Contact: James Riordon
riordon@aps.org
301-209-3238
American Physical Society
Source:Eurekalert  

Page: 1 2

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