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Multi-material Ceramic-Based Components &#8211; Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)
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Ceramic phases with one-dimensional long-range order.

Deqiang Yin1,2, Chunlin Chen3,4, Mitsuhiro Saito1,5

  • 1Advanced Institute for Materials Research, Tohoku University, Aoba-ku, Sendai, Japan.

Nature Materials
|December 14, 2018
PubMed
Summary
This summary is machine-generated.

Researchers discovered novel one-dimensional (1D) ordered structures in MgO and Nd2O3 ceramics. These unique atomic arrangements form a new category of solids with distinct properties, challenging existing classifications.

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Area of Science:

  • Materials Science
  • Solid-State Physics
  • Nanotechnology

Background:

  • Solids are typically classified into crystalline, quasicrystalline, and amorphous categories based on atomic arrangement.
  • Existing classifications do not encompass all observed solid structures.

Purpose of the Study:

  • To report novel ceramic phases of MgO and Nd2O3 with unique atomic arrangements.
  • To establish a new category of solid structures beyond the traditional classifications.

Main Methods:

  • Utilized atomic-resolution scanning transmission electron microscopy (STEM).
  • Employed first-principles calculations for theoretical analysis.

Main Results:

  • Identified MgO and Nd2O3 ceramic phases with one-dimensional (1D) long-range order and translational periodicity.
  • Observed structural units resembling coincidence-site lattice configurations.
  • Demonstrated that the 1D ordered MgO structure is a wide-bandgap semiconductor (3.2 eV), unlike bulk MgO (7.4 eV).

Conclusions:

  • The discovery of 1D ordered structures expands the known categories of solids.
  • These novel structures possess distinct physical properties compared to conventional solids.
  • This finding suggests a richer landscape of solid-state matter than previously understood.