Towards next-generation molecule-based magnets

Pictorial representation of the molecule-based magnet and its magnetic properties.
Credit: Rodolphe Clérac

Magnets are to be found everywhere in our daily lives, whether in satellites, telephones or on fridge doors. However, they are made up of heavy inorganic materials whose component elements are, in some cases, of limited availability. Now, researchers from the CNRS, the University of Bordeaux and the ESRF (European Synchrotron Radiation Facility in Grenoble)* have developed a new lightweight molecule-based magnet, produced at low temperatures, and exhibiting unprecedented magnetic properties. This compound, derived from coordination chemistry**, contains chromium, an abundant metal, and inexpensive organic molecules. This is the first molecule-based magnet that exhibits a ‘memory effect’ (i.e. it is capable of maintaining one of its two magnetic states) up to a temperature of 240 °C. This effect is measured by what is known as a coercive field, which is 25 times higher at room temperature for this novel material than for the most efficient of its molecule-based predecessors. This property therefore compares well with that of certain purely inorganic commercial magnets. The discovery, published on 30th October in Science, opens up highly promising prospects, which could lead to next-generation magnets complementary to current systems.

###

* The scientists work at the Centre de Recherche Paul Pascal (CNRS/Université de Bordeaux), Institut de Chimie de la Matière Condensée de Bordeaux (CNRS/Université de Bordeaux), Laboratoire Ondes et Matière d’Aquitaine (CNRS/Université de Bordeaux) at the Institut des Sciences Moléculaires (CNRS/Université de Bordeaux/Bordeaux INP), and ESRF – the European Synchrotron Radiation Facility.

** Coordination chemistry focuses on the combination of metals and ligands at the molecular level.

Media Contact

Clara Barrau
presse@cnrs.fr
33-144-965-151

http://www.cnrs.fr 

Original Source

https://www.cnrs.fr/en/towards-next-generation-molecule-based-magnets

Related Journal Article

http://dx.doi.org/10.1126/science.abb3861

Media Contact

Clara Barrau

All latest news from the category: Physics and Astronomy

This area deals with the fundamental laws and building blocks of nature and how they interact, the properties and the behavior of matter, and research into space and time and their structures.

innovations-report provides in-depth reports and articles on subjects such as astrophysics, laser technologies, nuclear, quantum, particle and solid-state physics, nanotechnologies, planetary research and findings (Mars, Venus) and developments related to the Hubble Telescope.

Back to home

Comments (0)

Write a comment

Newest articles

“Nanostitches” enable lighter and tougher composite materials

In research that may lead to next-generation airplanes and spacecraft, MIT engineers used carbon nanotubes to prevent cracking in multilayered composites. To save on fuel and reduce aircraft emissions, engineers…

Trash to treasure

Researchers turn metal waste into catalyst for hydrogen. Scientists have found a way to transform metal waste into a highly efficient catalyst to make hydrogen from water, a discovery that…

Real-time detection of infectious disease viruses

… by searching for molecular fingerprinting. A research team consisting of Professor Kyoung-Duck Park and Taeyoung Moon and Huitae Joo, PhD candidates, from the Department of Physics at Pohang University…

Partners & Sponsors