Anion ordering and vacancy defects in niobium perovskite oxynitrides

نویسندگان

چکیده

First-principles calculations predict the stability and mobility of vacancy defects in niobium perovskite oxynitrides, aiding defect engineering for enhanced photocatalysis.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Anion ordering and defect structure in Ruddlesden-Popper strontium niobium oxynitrides.

The crystal structure of the n = 1 member of the Ruddlesden-Popper family (SrO)(SrNbO(2)N)(n) was refined by the Rietveld method using neutron powder diffraction data. This complex crystallizes in the I4/mmm space group with cell parameters a = 4.0506(2) and c = 12.5936(9) angstroms. The refined composition was Sr(2)NbO(3.28)N(0.72), which corresponds to a formal oxidation state for Nb of +4.72...

متن کامل

Interaction and ordering of vacancy defects in NiO

Sohee Park,1 Hyo-Shin Ahn,1 Choong-Ki Lee,1 Hanchul Kim,4 Hosub Jin,2 Hyo-Sug Lee,3 Sunae Seo,3 Jaejun Yu,2 and Seungwu Han1,* 1Department of Physics, Ewha Womans University, Seoul 120-750, Republic of Korea 2School of Physics and CSCMR, Seoul National University, Seoul 151-747, Korea 3Samsung Advanced Institute of Technology, Suwon 440-600, Korea 4Korea Research Institute of Standards and Scie...

متن کامل

Subextensive entropies and open order in perovskite oxynitrides.

Unusual subextensive configurational entropies that vary with particle size and tend to zero per atom in macroscopic samples are predicted for AMO(3-z)N(z) oxynitrides with perovskite type crystal structures. These materials are crystallographically disordered on the atomic scale, but local anion order produces chains of M-N-M bonds that undergo a 90° turn at each M cation, giving rise to subex...

متن کامل

Vacancy Defects Induced Magnetism in Armchair Graphdiyne Nanoribbon

Spin-polarized electronic and transport properties of Armchair GraphdiyneNanoribbons (A-GDYNR) with single vacancy (SV), two types of configurations fordouble vacancy (DV1, DV2) and multi vacancy (MV) defects are studied by nonequilibriumGreen’s function (NEGF) combined with density functional theory (DFT).The results demonstrate that the A-GDYNR with the SV has the lowe...

متن کامل

Anion Ordering in Bichalcogenides

This review contains recent developments and new insights in the research on inorganic, crystalline compounds with two different chalcogenide ions (bichalcogenides). Anion ordering is used as a parameter to form structural dimensionalities as well as localand global-electric polarities. The reason for the electric polarity is that, in the heterogeneous bichalcogenide lattice, the individual bon...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Materials advances

سال: 2021

ISSN: ['2633-5409']

DOI: https://doi.org/10.1039/d1ma00122a