A-site ordered quadruple perovskite oxides with a formula as $\rm AA'_3 B^{\;}_4 O^{\;}_{12}$ exhibit multiple physical properties and superior performances, thus act as important subjects of current condensed matter physics and material science. Compared to the simple ABO₃ perovskite, in the A-site...

In this paper, we reviewed the recent progress on the high-pressure synthesis of Pb-based simple perovskite compounds PbMO₃ (M=3d transition metals) and the investigation on their physical properties, mainly focusing on the M dependent crystal structure, electronic configuration, magnetism, transpor...

Double perovskite Y₂NiIrO₆ is a ferrimagnetic material with Curie temperature of 192 K. It has drawn wide attention owing to its remarkable exchange-bias effect. Here, we studied the low-temperature crystal structure, electron transport properties and magnetoresistance of Y₂NiIrO₆. The crystal struc...

The copper-based rare-earth perovskites La_1–xNd_xCuO₃(0≤x≤1) have been synthesized in the two-stage Walker-type high-pressure apparatus. The refined crystal structure results revealed that La_1–xNd_xCuO₃ (0≤x≤0.4) adopts a rhombohedral structure with the space group $R\overline 3 c$. When 0.5≤x≤0.7, a...

We present a theoretical approach for predicting the electron configuration, polymorph, synthesis condition, and physical properties of complex magnetic double perovskite compounds. Our method is reasonable and computationally efficient, allowing us to identify an antiferromagnetic (AFM) metallic ma...

The electrical explosion of metal bridge foil is a key physical process in many fields, e.g. electric guns and slapper detonator. Due to the complexity of material properties, dynamic processes, and effects of geometric configurations, a large amount of earlier theoretical simulations used simplifie...

The dynamic mechanical behavior and microstructure evolution of titanium alloy Ti6Al4V under shock compression at temperatures ranging from 25 ℃ to 800 ℃ and strain rates from 2000 s⁻¹ to 7000 s⁻¹ were studied by using a split Hopkinson pressure bar. The temperature dependence and strain rate sensit...

Compared with the traditional reinforced concrete and profiled double-skin composite wall (PDSCW), concrete-infilled double steel corrugated-plate wall (CDSCW) has better axial compressive capacity, lateral flexural stiffness, impact resistance and seismic performance, which has broad application pr...

As a new type of energetic material, high-entropy alloys will release a large amount of energy during high-speed impact, which has important application value. A two-stage light gas gun system was used to load the HfZrTiTaNb high-entropy alloys projectile under vacuum environment, and the impact exp...

To study the influence of crack inclination angle on the mechanical properties and the energy evolution mechanism during the rock failure, a calculation model was constructed based on the particle flow dispersion element numerical platform, and uniaxial compression numerical experiments were conduct...

Artificial plastic hinges have been widely used in the seismic research of frame structures, which can control the location of the beam plastic hinges and avoid the continuous collapse of the frame structure due to the damage of beam-column joints in earthquakes. The design goal of “strong column we...

Aiming at the problem of deflection when the projectile obliquely penetrates a multi-layer target, a theoretical calculation model of the projectile deflection caused by the oblique cone structure of the projectile tail is established, and the change rule of the deflection with the tail structure is...

The near-seabed explosion shock wave can cause serious damage to such facilities as submarine optical cables and pipelines. The spatiotemporal evolution of the underwater explosion shock wave can be affected by the impedance of different types of substrate. Therefore, it is of great significance to ...

The bubble curtain can effectively weaken the influence of underwater shock wave on the surrounding environment. In order to investigate the synergistic effect of air supply volume and bubble curtain layer on the shock wave attenuation of underwater explosion, underwater explosion tests with one lay...

In order to explore the influence of CO₂ and porous materials on methane explosion characteristics, the 100 mm×100 mm×1000 mm explosion pipeline was independently designed. The influence of porosity of different porous materials and CO₂ injection pressure on methane explosion flame structure, flame ...

Three obstacles with different levels of bending strength was selected for experimental research on the impact of hydrogen-methane mixed gas explosions in order to explore the varying environmental hazards of explosion promotion. During the experiment, the images of the flame in the explosion pipeli...