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In this work, we report an ab initio investigation based on density functional theory of the structural, energetic and electronic properties of 2D layered chalcogenides compounds based in the combination of the transition-metals (Ti, Zr,…

材料科学 · 物理学 2019-04-17 Carlos M. O. Bastos , Rafael Besse , Juarez L. F. Da Silva , Guilherme M. Sipahi

Topological semimetal may have substantial applications in electronics, spintronics and quantum computation. Recently, ZrTe is predicted as a new type of topological semimetal due to coexistence of Weyl fermion and massless triply…

材料科学 · 物理学 2018-01-17 San-Dong Guo , Yue-Hua Wang , Wan-Li Lu

La$_{0.67}$Sr$_{0.33}$Mn$_{1-x}$Ti$_x$O$_{3}$ ($0 \le x \le 0.20$) polycrystalline materials are prepared by employing lower annealing temperature compared to the temperatures reported for the materials of the same composition. The…

强关联电子 · 物理学 2009-11-13 Vishwajeet Kulkarni , K. R. Priolkar , P R Sarode , Rajeev Rawat , Alok Banerjee , S. Emura

The structural, elastic, and electronic properties of the very recently discovered ternary silicide superconductor, Li2IrSi3, have been calculated using ab-initio technique. We have carried out the plane-wave pseudopotential approach within…

超导电性 · 物理学 2015-05-12 M. A. Hadi , M. A. Alam , M. Roknuzzaman , M. T. Nasir , A. K. M. A. Islam , S. H. Naqib

In order to understand the unexpected superconducting behavior of MgB$_2$ compound we have made electronic structure calculations for MgB$_2$ and closely related systems. Our calculated Debye temperature from the elastic properties indicate…

超导电性 · 物理学 2009-11-07 P. Ravindran , P. Vajeeston , R. Vidya , A. Kjekshus , H. Fjellvåg

We investigate electromechanical properties of two-dimensional MoS$_2$ monolayers in the 1H, 1T, and 1T$^\prime$ structures as a function of charge doping by using density functional theory. We find isotropic elastic moduli in the 1H and 1T…

材料科学 · 物理学 2018-02-14 Nguyen T. Hung , Ahmad R. T. Nugraha , Riichiro Saito

Some anisotropy in both mechanical and thermodynamical properties of bismuth is expected. A combination of density functional theory total energy calculations and density functional perturbation theory in the local density approximation is…

材料科学 · 物理学 2016-04-20 B. Arnaud , S. Lebègue , G. Raffy

First principles calculations were performed to study the structural, elastic, and bonding properties of hcp ZrxTi1-x binary alloy. The special quasi- random structure (SQS) method is employed to mimic the random hcp ZrxTi1-x alloy. It is…

计算物理 · 物理学 2015-12-22 Hou Songjun , Lei Huaping , Huang Sunchao , Zeng Zhi

Molybdenum disilicide (MoSi$_2$) is a very promising material for high temperature structural applications due to its high melting point (2030 {\deg}C), low density, high thermal conductivity and good oxidation resistance. However, MoSi$_2$…

Multicomponent nitrides are a hot research topic in the search of hard coatings. The effect of substitutions on the phase stabilities, magnetic, and elastic properties of $Al_{1-x-y}Cr_{x}Ti_{y}N$ $(0\leq x,y\leq1)$ was studied using first…

Ab initio detailed calculations of the elastic properties of AgCl_{x}Br_{1-x} alloys recently appeared using density-functional perturbation theory and employing the virtual crystal approximation or by means of the full potential linearized…

材料科学 · 物理学 2017-02-01 V. Katsika-Tsigourakou , E. S. Skordas

The resistive response of Ba(Fe$_{1-x}$Co$_{x}$)$_{2}$As$_{2}$ to AC mechanical deformation is considered in the multi-domain state. This resistance change depends both upon the anelastic relaxation of domain walls and upon the relation…

强关联电子 · 物理学 2019-03-13 Alexander T. Hristov , Matthias S. Ikeda , Johanna C. Palmstrom , Ian R. Fisher

We present mechanical measurements performed at low temperatures on cantilever-based microelectro-mechanicalstructures(MEMS) coated with a metallic layer. Two very different coatings are presented in order to illustrate the capabilities of…

介观与纳米尺度物理 · 物理学 2013-12-17 Eddy Collin , Johannes Kofler , Sabine Lakhloufi , Sebastien Pairis , Yuriy M. Bunkov , Henri Godfrin

Tetragonal Mo5PB2 compound, a recently discovered superconductor, belongs to technologically important class of materials. It is quite surprising to note that a large number of physical properties of Mo5PB2, including elastic properties and…

材料科学 · 物理学 2021-05-12 M. I. Naher , M. A. Afzal , S. H. Naqib

MV$_2$Ga$_4$ (M = Sc, Zr, Hf) compounds belong to an emerging class of materials showing a unique combination of unusual superconducting behavior with extended linear chains in the crystal structure. In order to gain insights {into} its…

材料科学 · 物理学 2018-11-20 P. P. Ferreira , T. T. Dorini , F. B. Santos , A. J. S. Machado , L. T. F. Eleno

To understand the effect of isoelectronic substitution on thermoelectric properties of TiCoSb based half - Heusler (HH) alloys, we have systematically studied the transport properties with substitution of Zr at Ti and Bi at Sb sites. The…

材料科学 · 物理学 2019-09-04 Mukesh K. Choudhary , P. Ravindran

SnTaS2 is a recently discovered layered semimetal exhibiting type-II low transition temperature superconductivity. Except some superconductivity related parameters, most of the physical properties, namely, elastic, mechanical, bonding,…

材料科学 · 物理学 2022-07-13 M. I. Naher , M. Mahamudujjaman , A. Tasnim , R. S. Islam , S. H. Naqib

Lattice parameter, electronic structure, mechanical and thermodynamic properties of ThN are systematically studied using the projector-augmented-wave method and the generalized gradient approximation based on the density functional theory.…

材料科学 · 物理学 2015-05-20 Yong Lu , Dafang Li , Bao-Tian Wang , Rong-Wu Li , Ping Zhang

Density Functional Theory calculations have been performed to obtain lattice parameters, elastic constants, and electronic properties of ideal pyrochlores with the composition A$_2$B$_2$O$_7$ (where A=La,Y and B=Ti,Sn,Hf, Zr). Some thermal…

材料科学 · 物理学 2009-11-11 J. M. Pruneda , Emilio Artacho

CdIn2S4 thiospinel was studied by means of the first principles calculations in both generalized gradient and local density approximations (GGA and LDA). The structural, electronic, optical and elastic properties were calculated in the…

材料科学 · 物理学 2014-03-11 V. Krasnenko , M. G. Brik