Ceramic phases with one-dimensional long-range order

Journal: Nature Materials

Published: 2018-12-10

DOI: 10.1038/s41563-018-0240-0

Affiliations: 5

Authors: 5

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Research Highlight

Close encounters of the fourth kind

© oxygen/Getty

© oxygen/Getty

Scientists have discovered a new crystallographic phase in ceramic metal oxides.

Solids are classified into three categories — crystalline, quasicrystalline and amorphous — depending on their atomic arrangements.

Crystalline materials exhibit both translational symmetry, in which arrangements of atoms repeat themselves along three axes, and rotational symmetry, where the structure looks identical after being rotated around an axis. Quasicrystalline materials, however, exhibit only rotational symmetry, while amorphous materials have neither translational nor rotational symmetry.

Now, a team of scientists, all from the Advanced Institute for Materials Research in Japan, has found two ceramic materials — magnesium oxide and neodymium oxide — with one-dimensional ordered crystal structures that differ to the atomic arrangements found in known solid structures.

The work has revealed a fourth way in which atoms can arrange themselves in solids.

Supported content

  1. Nature Materials 18, 19–23 (2019). doi: 10.1038/s41563-018-0240-0
Institutions FC
WPI Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Japan 0.57
Institute of Engineering Innovation (IEI), UTokyo, Japan 0.17
College of Aerospace Engineering, CQU, China 0.10
Shenyang National Laboratory for Materials Science (SYNL), IMR CAS, China 0.10
Nanostructures Research Laboratory, JFCC, Japan 0.07

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