Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Discovery of a novel gold-based superconductor

25.04.2014

Researchers at Japan's National Institute for Materials Science (NIMS) have synthesized a novel superconductor, SrAuSi3, which contains gold as a principal constituent element.


Crystal structure (a) and scanning transmission electron microscope lattice image (b) of SrAuSi3

Copyright : National Institute for Materials Science (NIMS)

Led by Masaaki Isobe, a team consisting of Hiroyuki Yoshida, Koji Kimoto, Masao Arai and Eiji Muromachi recently searched for novel substances that lack spatial inversion symmetry in their crystal structures.

They successfully synthesized a new compound, SrAuSi3, and found that it exhibits superconductivity at an absolute temperature of 1.6 K (-271.55°C). This compound belongs to a group with a so-called BaNiSn3-type structure (general chemical formula: AMX3, where M represents a transition-metal element).

Up until now, research on superconductivity with broken spatial inversion symmetry has mostly focused on compounds that contain a relatively heavy element M, such as rhodium (Rh), iridium (Ir), and platinum (Pt).

However, using a high-pressure synthesis method, the team successfully synthesised for the first time a compound with the same general chemical formula but using gold (Au), which is even heavier, as element M.

One of the predicted properties associated with superconductivity with broken spatial inversion symmetry is the extremely high upper critical field (the maximum magnetic field value at which superconductivity is sustained).

The discovery of this substance is expected to contribute not only to an understanding of the mechanism involved in superconductivity with broken spatial inversion symmetry but also to the development of new superconducting materials that can be used in a magnetic field.

The results of this research were published in the March 25, 2014 issue (Volume 6, Issue 6) of Chemistry of Materials, a journal distributed by the American Chemical Society. 

Associated links

Mikiko Tanifuji | Research SEA News
Further information:
http://www.nims.go.jp/eng
http://www.researchsea.com

More articles from Materials Sciences:

nachricht Atomic Trigger Shatters Mystery of How Glass Deforms
21.10.2014 | Oak Ridge National Laboratory

nachricht Researchers Develop World’s Thinnest Electric Generator
16.10.2014 | Columbia University School of Engineering and Applied Science

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Anzeige

Anzeige

Event News

Comparing Apples and Oranges? A Colloquium on International Comparative Urban Research

22.10.2014 | Event News

Battery Conference April 2015 in Aachen

16.10.2014 | Event News

Experts discuss new developments in the field of stem cell research and cell therapy

10.10.2014 | Event News

 
Latest News

Earliest modern human sequenced

22.10.2014 | Life Sciences

Continuous slab caster from Siemens receives FAC from Maanshan

22.10.2014 | Press release

'Shrinking goats' another indicator that climate change affects animal size

22.10.2014 | Ecology, The Environment and Conservation

VideoLinks
B2B-VideoLinks
More VideoLinks >>>