Pressure Destabilizes Oxygen Vacancies in Bridgmanite [PDF]
Journal of Geophysical Research: Solid Earth, 2021 AbstractBridgmanite may contain a large proportion of ferric iron in its crystal structure in the forms of FeFeO3and MgFeO2.5components. We investigated the pressure dependence of FeFeO3and MgFeO2.5contents in bridgmanite coexisting with MgFe2O4‐phase and with or without ferropericlase in the MgO‐SiO2‐Fe2O3ternary system at 2,300 K, 33 and 40 GPa ...
Fei, Hongzhan +7 more
openaire +2 more sources
Microscopic origin of the mobility enhancement at a spinel/perovskite oxide heterointerface revealed by photoemission spectroscopy [PDF]
, 2017 The spinel/perovskite heterointerface $\gamma$-Al$_2$O$_3$/SrTiO$_3$ hosts a two-dimensional electron system (2DES) with electron mobilities exceeding those in its all-perovskite counterpart LaAlO$_3$/SrTiO$_3$ by more than an order of magnitude despite ...
Borisov, V. +17 more
core +2 more sources
Variation of magnetic properties of Sr$_2$FeMoO$_6$ due to oxygen vacancies [PDF]
, 2018 Oxygen vacancies can be of utmost importance for improving or deteriorating physical properties of oxide materials. Here, we studied from first-principles the electronic and magnetic properties of oxygen vacancies in the double perovskite Sr$_2$FeMoO$_6$
Antonov, Victor N. +5 more
core +3 more sources
, 2012 Motivated by recent angle-resolved photoemission spectroscopy (ARPES) observations of a highly metallic two-dimensional electron gas (2DEG) at the (001) vacuum-cleaved surface of SrTiO3 and the subsequent discussion on the possible role of oxygen ...
Jeschke, Harald O. +3 more
core +1 more source
Roles of oxygen vacancies on ferromagnetism in Ni doped In2O3: A hybrid functional study
, 2013 The roles of oxygen vacancies on the electronic and magnetic properties of Ni doped In$_2$O$_3$ have been studied by first-principles calculations based on hybrid functional theory.
He, H. -P. +5 more
core +1 more source
Vacancies and vacancy-oxygen complexes in silicon: Positron annihilation with core electrons [PDF]
Physical Review B, 1998 Various point defects in silicon are studied theoretically from the point view of positron annihilation spectroscopy. Properties of a positron trapped at a single vacancy, divacancy, vacancy-oxygen complexes $({\mathrm{VO}}_{n}),$ and divacancy-oxygen complex are investigated. In addition to the positron lifetime and positron binding energy to defects,
Kuriplach, Jan +4 more
openaire +3 more sources
Intrinsic Magnetism in Nanosheets of SnO$_{2}$: A First-principles Study [PDF]
, 2012 We propose intrinsic magnetism in nanosheets of SnO$_{2}$, based on first-principles calculations. The electronic structure and spin density reveal that $p$ orbitals of the oxygen atoms, surrounding Sn vacancies, have a non itinerant nature which gives ...
Garcia-Suarez, Victor M. +2 more
core +3 more sources
Oxygen-vacancy-related relaxation and conduction behavior in (Pb1-xBax)(Zr0.95Ti0.05)O3 ceramics
AIP Advances, 2014 (Pb1-xBax)(Zr0.95Ti0.05)O3 (x = 0, 0.025, 0.05, 0.075 and 0.1) ceramics were prepared via a solid-state reaction route. Low-frequency (20 ∼ 2 × 107 Hz) dielectric properties were investigated in the temperature region of 25-650 °C.
Tian-Fu Zhang +6 more
doaj +1 more source
In Situ Analysis of Oxygen Vacancies and Band Alignment in HfO2/TiN Structure for CMOS Applications
Nanoscale Research Letters, 2017 The density of oxygen vacancies characterization in high-k/metal gate is significant for semiconductor device fabrication. In this work, a new approach was demonstrated to detect the density of oxygen vacancies by in situ x-ray photoelectron spectroscopy
Da-Peng Xu +9 more
doaj +1 more source
Synthesis of Surface Oxygen-deficient BiPO4 Nanocubes with Enhanced Visible Light Induced Photocatalytic Activity [PDF]
Materials Research, 2017 The visible light driven BiPO4 nanocubes with sufficient surface oxygen deficiency were fabricated by a hydrothermal process and subsequently ultrasonic assistant Fe reduction process.
Bingtao Shi +5 more
doaj +1 more source