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| 1 | New quantum matters:Build up versus high pressure tuning显示文摘In this article we briefly review new quantum functional compounds primarily based on our recent works.We will highlight the effects of pressures on both materials synthesis and quantum tuning.The contents include(I)'111'-type iron based superconducting system,(II)pressure induced superconductivity in topological insulators and(III)the new diluted magnetic semiconductors with decoupled spin charge doping. | JIN ChangQing WANG XianCheng LIU QingQing ZHANG SiJia FENG ShaoMin DENG Zheng YU RiCheng ZHU JingLong | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，12： | 11 |
| 2 | Dynamic observation of oxygen vacancies in hafnia layer by in situ transmission electron microscopy显示文摘套住费用的进程,作为捕获费用的层与 HfO 2 拍摄,被在积极外部偏爱下面在 situ 电子精力损失光谱学并且在 situ 精力过滤器图象使用调查了。结果证明氧空缺在整个在编程过程期间套住层的 HfO 2 是非一致地分布式的。氧空缺的分发不与套住的电子的报导地点的一样,暗示套住的过程是更复杂的。这些导致偏爱的氧缺点可以影响象设备一生那样的设备表演特征。这现象应该在套住过程的模型被考虑。 | Chao Li Yuan Yao Xi Shen Yanguo Wang Junjie Li Changzhi Gu Richeng Yu Qi Liu Ming Liu | 2015 | Nano Research2015，8，11： | 2 |
| 3 | High pressure effects on the crystal structure andelectric conductivity of perovskite like (Ca/Sr)_2CuO_2Cl_2 compounds显示文摘The crystal structure stability as well as electric conductance of (Sr/Ca)_2CuO_2Cl_2 compound with K_2NiF_4 structure was investigated up to 31 GPa using diamond anvil technique. It seems that (Sr/Ca)_2CuO_2Cl_2 is quite stable under pressure but with obvious anisotropic compressibility. The equation of state (EOS) obtained shows relative large bulk modulus. | LIU QingQing WANG FuRen LI FengYing CHEN LiangChen YU RiCheng JIN ChangQing LI YanChun LIU Jing | 2008 | Chinese Science Bulletin2008，53，18： | 2 |
| 4 | High-pressure and high-tem-perature synthesis of MgB_2 and its superconductivity显示文摘The single-phase sample of MgB2 was prepared successfully at the temperature of 900℃ and under the pressure of 3 GPa. The structure of the sample was investigated using powder X-ray diffraction and Rietveld analysis. The results show that the structure of the sample belongs to the hexagonal structure with space group of P6/mmm, a=3.0861(5) A, c=3.5222(8) A. The magnetic and resistance measurements indicate that the superconducting transition temperature Tc is 39 K. | ZHU Jialin, LI Shaochun, YU Richeng, LI Fengying LIU Zhengxing & JIN ChangqingLaboratory for Extreme Condition Physics, Institute of Physics, Center for Condensed Matter Physcis and Beijing High Pressure Research Center, Chinese Academy of Sciences, Beijing 100080, China | 2001 | Chinese Science Bulletin2001，46，22： | 1 |
| 5 | Structural stability and Raman scattering of CoPt and NiPt hollow nanospheres under high pressure显示文摘This paper reports that the high pressure in situ angle dispersive x-ray diffraction and Raman scattering studies on CoPt and NiPt hollow nanospheres are performed by means of a diamond anvil cell for generating external pressure at room temperature.The crystal structures of both the CoPt and NiP hollow nanospheres keep stable up to about 41 GPa.Moreover,it shows that the hollow nanospheres possess higher bulk moduli than their bulk counterparts by using the frst-principles density functional theory. | Xi Shen Qian Sun Jie Zhu Yuan Yao Jing Liu Changqing Jin Richeng Yu Rongming Wang | 2013 | Progress in Natural Science:Materials International2013，23，4： | 1 |
| 6 | Estimates of strength and cracking behaviors of pre-flawed granite specimens treated by chemical corrosion under triaxial compression tests显示文摘Four types of granite specimens were prepared and treated by chemical corrosion for 5 and 30 days,which were then used to carry out triaxial compression tests under different confining pressuresσ_(3).Type A is the intact sample with no preexisting flaws.Types B and C are the samples containing two relatively low-dip flaws and two relatively high-dip flaws,respectively.Type D is the sample including both relatively low-dip and relatively high-dip flaws.The influences of pH value of chemical solutions,flaw distribution,corrosion time andσ_(3) on triaxial stress-strain curves and ultimate failure modes are analyzed and discussed.The results show that the pH value of the chemical solution,corrosion time and the arrangement of preexisting flaws play crucial roles in the cracking behaviors of granite specimens.Type A specimens have the largest peak axial deviatoric stress,followed by Type C,Type D,and Type B specimens,respectively.It is because the decrease in the inclination of preexisting flaws induces the weakening effect due to the decrease in the shadow area along the compaction direction.Under aσ_(3) of 5 MPa,the peak axial deviatoric stress drops by approximately 40.89%,29.08%,4.08%,and 23.53%for pH=2,4,7,and 12,respectively.For intact granite(Type A)specimens,the ultimate failure mode displays a typical shear mode.The connection of two secondary cracks initiated at the tips of preexisting cracks is always the ultimate failure and crack coalescence mode for Type B specimens.The ultimate failure and crack coalescence mode of Types C and D specimens are significantly affected by pH value of the chemical solution,corrosion time andσ_(3),which is different from those of Types A and B specimens due to the differences in flow distributions. | Zhicong LI Richeng LIU Shuchen LI Hongwen JING Xiaozhao LI Liyuan YU | 2022 | Frontiers of Earth Science2022，16，2： | 1 |
| 7 | Giant enhancement and anomalous temperature dependence of magnetism in monodispersed NiPt2 nanoparticles显示文摘A simple yet general one-step solvothermal method is applied to synthesizesub-7 nm monodispersed single-crystal NiPt2 nanoparticles (NPs) with themorphology of truncated octahedrons in the alloying state of disordered atomicarrangements. The effective magnetic moments of these NPs exhibit an anomaloustemperature dependency, increasing from approximately 0.9 μB/atom at 15 K to1.9 μB/atom at 300 K. This is an increase by a factor of more than three comparedwith bulk Ni. On the basis of experiments involving X-ray absorption near-edgespectroscopy of the L3 edge for Pt and density functional theory calculations,the observed novel magnetism enhancement and its anomalous temperaturedependence are attributed to the electron transfer arising from the thermal-activation effects. | Aixian Shan Chinping Chen Wei Zhang Daojian Cheng Xi Shen Richeng Yu Rongming Wang | 2017 | Nano Research2017，10，9： | 1 |
| 8 | Solute Removal Analysis of a Large-Scale Fracture Plane Considering Different Flow Paths and Different Hydraulic Head Differences显示文摘An experimental and numerical study was carried out to investigate the solute removal process through a large-scale fracture plane considering different flow paths and hydraulic head differences.The visualization techniques were utilized in the experiment to capture the removal process images,which were then transferred to binary images.The variations in dimensionless concentration,which is defined as saturation of solute phase,were analyzed.With increasing hydraulic head difference,the speed of solute removal increases and the dimensionless concentration decreases.The flow paths result in different solute distribution patterns and different mechanisms for solute removal such as advection and diffusion,thus the curves of dimensionless concentration versus time are different.The dimensionless concentration over time decreases from approximately 1,which is smaller than 1 due to the existence of bubbles,to approximately 0,which is larger than 0 because the folds of the background are dealt as“solute”.A significant longer time is needed to achieve a certain fixed dimensionless concentration for a smaller hydraulic head difference.With the finite element software COMSOL multiphysics,the solute removal process,flow velocity fields,flow streamlines,as well as the hydraulic pressure fields were analyzed,which shows a good consistency with the experimental results.In practical engineering,when the solute pollutes the underground environment,the removal ability can be more significantly enforced by immediately applying a larger hydraulic head difference along a longer distance between the inlet and outlet boundaries. | Qian Yin Xiaojing Li Liyuan Yu Ming He Richeng Liu | 2020 | Computer Modeling in Engineering & Sciences2020，，7： | 1 |
| 9 | Superconducting properties of “111” type LiFeAs iron arsenide single crystals显示文摘LiFeAs single crystal has been grown with superconducting transition temperature Tc comparable to that of polycrystals.A magnetic transition is found at about 160 K,which suggests the correlation of superconductivity with spin wave density. | XianCheng Wang QingQing Liu YuXi Lv Zheng Deng Kan Zhao RiCheng Yu JinLong Zhu ChangQing Jin | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，7： | 0 |
| 10 | 锆富氢新材料中发现高于70 K的高温超导性质显示文摘氢是周期表里质量最轻的元素,早期理论预测氢在超高压条件可以呈现固体金属态,根据BCS电声耦合理论推测金属氢可能具有高温超导特性.然而实现纯氢的金属化需要很高的压力,技术复杂极具挑战.富氢化合物可以对氢提供“化学预压缩”,有可能在较低压力实现以氢为主的金属化和超导,目前实验上已经在硫、稀土和碱土金属等富氢化物材料发现高温超导现象.本文作者运用自行研发的先进的超高压和激光加热一体化的极端条件集成技术,在~220 GPa、2000 K的高压高温条件下成功合成了高质量的锆富氢新化合物,并在锆富氢化合物中发现高压在位诱导的临界转变温度(T;)高达71 K的超导现象,这是首次在4d过渡金属氢化物发现高温超导. | Changling Zhang Xin He Zhiwen Li Sijia Zhang Shaomin Feng Xiancheng Wang Richeng Yu Changqing Jin | 2022 | Science Bulletin2022，67，9： | 0 |
| 11 | Superconductivity above 70 K observed in lutetium polyhydrides显示文摘The binary polyhydrides of heavy rare earth lutetium that shares a similar valence electron configuration to lanthanum have been experimentally discovered to be superconductive.The lutetium polyhydrides were successfully synthesized at high pressure and high temperature conditions using a diamond anvil cell in combinations with the in-situ high pressure laser heating technique.The resistance measurements as a function of temperature were performed at the same pressure of synthesis in order to study the transitions of superconductivity(SC).The superconducting transition with a maximum onset temperature(Tc)71 K was observed at pressure of 218 GPa in the experiments.The Tcdecreased to 65 K when pressure was at 181 GPa.From the evolution of SC at applied magnetic fields,the upper critical field at zero temperatureμ0Hc2(0)was obtained to be~36 T.The in-situ high pressure X-ray diffraction experiments imply that the high TcSC should arise from the Lu4H23phase with Pm3n symmetry that forms a new type of hydrogen cage framework different from those reported for previous light rare earth polyhydride superconductors. | Zhiwen Li Xin He Changling Zhang Ke Lu Baosen Min Jun Zhang Sijia Zhang Jianfa Zhao Luchuan Shi Yi Peng Shaomin Feng Zheng Deng Jing Song Qingqing Liu Xiancheng Wang Richeng Yu Luhong Wang Yingzhe Li Jay D.Bass Vitali Prakapenka Stella Chariton Haozhe Liu Changqing Jin | 2023 | Science China(Physics,Mechanics & Astronomy)2023，66，6： | 0 |
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