Monthly Archives: December 2012

Some cunning ChemDraw

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You probably wouldn’t expect the Chief Editor of a journal to spend much time using ChemDraw (or maybe you would?) — it’s just that I can’t imagine the editors of too many other chemistry journals (such as the Stangs and Gölitzs of this world) redrawing the structures provided by 75+% of the authors. For my sins, I do. I like to think I’m a bit of a perfectionist when it comes to ChemDraw, although members of my team might use a different word (or two). One of the most challenging papers included structures such as this one.

I considered myself a bit of a ChemDraw expert, but then I saw the video that’s embedded below and had to re-evaluate my world view! It was put together by Pierre Morieux, a postdoc who e-mailed us to let us know about his handiwork. I encourage those of you who are ChemDraw connoisseurs to watch it. If you don’t learn something new, I will be surprised…

The video has also been featured over at In the Pipeline, with — I imagine — a much more extensive comment thread than we’ll probably get here.

Fall MRS 2012: Rare earth magnets — Reduce, Reuse, Recycle!

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Posted on behalf of Ros Daw, Senior Editor, Nature

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Hard disk drives, DVDs and CDs — along with many clean energy devices such as wind turbines and electric vehicles — all demand high-quality permanent magnets such as neodymium-iron-boron and samarium-cobalt for their operation. Increasing demand in these products has meant the cost of the rare-earth metals forming these magnets has gone up; and the Western world is already paying a premium to China for the raw materials.

At the ‘Magnets’ session of the ‘Energy Critical Materials’ symposium, researchers presented a variety of routes to reduce the dependence of rare-earth metals in high-quality magnetic materials. George Hadjinpanyas described rare-earth-lean nanocomposites comprised of exchange-coupled soft and hard magnetic phases from powder precursors (1). Ryan Ott reported a promising method of recycling rare-earth metal alloys using a magnesium extraction method (2). And in a third talk, Arif Mubarok provided insights to optimise rare-earth-free (soft) magnet FeNi with inspiration from novel crystal structures found in meteorites (3).

The session highlighted that the burgeoning clean-energy-device industry is actually introducing a whole new set of sustainability issues with regard to the raw materials forming their components. There is clearly a need for a more holistic approach in order to develop truly sustainable technologies.

(1) The Drive for Permanent Magnets with Significantly Lower or No Rare Earth Content; George Hadjipanyas; Symposium D; 2012 Fall MRS.
(2) Permanent Magnet Alloys Synthesized from Recycled Rare Earth Metals; Ryan T Ott, Lawrence L Jones, Kevin W Dennis, R. William McCallum; Symposium D; 2012 Fall MRS.
(3) Microstructural and Magnetic Characterization of Tetrataenite, FeNi — A Potential Candidate for a Rare-earth-free Permanent Magnet; Arif Mubarok; Nina Bordeaux, Joseph L Goldstein, Laura H Lewis; Symposium D; 2012 Fall MRS.