Literature DB >> 11287944

Materials science. The hardest known oxide.

L S Dubrovinsky1, N A Dubrovinskaia, V Swamy, J Muscat, N M Harrison, R Ahuja, B Holm, B Johansson.   

Abstract

A material as hard as diamond or cubic boron nitride has yet to be identified, but here we report the discovery of a cotunnite-structured titanium oxide which represents the hardest oxide known. This is a new polymorph of titanium dioxide, where titanium is nine-coordinated to oxygen in the cotunnite (PbCl2) structure. The phase is synthesized at pressures above 60 gigapascals (GPa) and temperatures above 1,000 K and is one of the least compressible and hardest polycrystalline materials to be described.

Entities:  

Year:  2001        PMID： 11287944     DOI： 10.1038/35070650

Source DB:  PubMed          Journal:  Nature        ISSN： 0028-0836            Impact factor:   49.962


  8 in total

1.  Structural, magnetic and electronic properties of CrO2 at multimegabar pressures.

Authors:  Shengxuan Huang; Xiang Wu; Jingjing Niu; Shan Qin
Journal:  RSC Adv       Date:  2018-07-09       Impact factor: 4.036

2.  Crystal structure of the pressure-induced metallic phase of SiH4 from ab initio theory.

Authors:  D Y Kim; R H Scheicher; S Lebègue; J Prasongkit; B Arnaud; M Alouani; R Ahuja
Journal:  Proc Natl Acad Sci U S A       Date:  2008-10-15       Impact factor: 11.205

3.  Unexpected strain-stiffening in crystalline solids.

Authors:  Chao Jiang; Srivilliputhur G Srinivasan
Journal:  Nature       Date:  2013-04-10       Impact factor: 49.962

4.  Novel stable hard transparent conductors in TiO₂-TiC system: design materials from scratch.

Authors:  Xiangying Meng; Dongyan Liu; Xuefeng Dai; Haijun Pan; Xiaohong Wen; Liang Zuo; Gaowu Qin
Journal:  Sci Rep       Date:  2014-12-16       Impact factor: 4.379

5.  Fracture-induced amorphization of polycrystalline SiO2 stishovite: a potential platform for toughening in ceramics.

Authors:  Norimasa Nishiyama; Fumihiro Wakai; Hiroaki Ohfuji; Yusuke Tamenori; Hidenobu Murata; Takashi Taniguchi; Masafumi Matsushita; Manabu Takahashi; Eleonora Kulik; Kimiko Yoshida; Kouhei Wada; Jozef Bednarcik; Tetsuo Irifune
Journal:  Sci Rep       Date:  2014-10-09       Impact factor: 4.379

6.  Picosecond amorphization of SiO2 stishovite under tension.

Authors:  Masaaki Misawa; Emina Ryuo; Kimiko Yoshida; Rajiv K Kalia; Aiichiro Nakano; Norimasa Nishiyama; Fuyuki Shimojo; Priya Vashishta; Fumihiro Wakai
Journal:  Sci Adv       Date:  2017-05-12       Impact factor: 14.136

Review 7.  The Role Played by Computation in Understanding Hard Materials.

Authors:  John Edward Lowther
Journal:  Materials (Basel)       Date:  2011-06-14       Impact factor: 3.623

8.  Characterisation of oxygen defects and nitrogen impurities in TiO2 photocatalysts using variable-temperature X-ray powder diffraction.

Authors:  Christopher Foo; Yiyang Li; Konstantin Lebedev; Tianyi Chen; Sarah Day; Chiu Tang; Shik Chi Edman Tsang
Journal:  Nat Commun       Date:  2021-01-28       Impact factor: 14.919
  8 in total

北京卡尤迪生物科技股份有限公司 © 2022-2023.