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相关论文: Electronic properties of A2Zr2O7 (A= Gd, Nd) ceram…

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Electronic and stability properties of quasi-2D alkylammonium perovskites are investigated using density functional theory (DFT) calculations and validated experimentally on selected classes of compounds. Our analysis is focused on…

We present here the comprehensive X-ray diffraction (XRD) and dielectric measurement of (1-x)Bi(Zn1/2Ti1/2)O3-xPbTiO3 (BZT-xPT) piezoceramics with x=0.65, 0.70, 0.75 and 0.80. Powder X-ray diffraction data reveals the tetragonal structure…

材料科学 · 物理学 2013-11-19 Jyoti Sharma , Rishikesh Pandey , Akhilesh Kumar Singh

We have investigated the structural, electronic, and magnetic properties of the pyrochlore iridates Eu2Ir2O7 and Pr2Ir2O7 using a combination of resonant elastic x-ray scattering, x-ray powder diffraction, and resonant inelastic x-ray…

Electronic properties of the metallic pyrochlore oxide Cd2Re2O7 are studied by means of electrical resistivity and Hall measurements. Semimetallic band structures are revealed as expected from band structure calculations. It is found that…

强关联电子 · 物理学 2009-11-07 Z. Hiroi , M. Hanawa , Y. Muraoka , H. Harima

First principle calculations were performed to study the ground state electronic properties of Barium titanate within the density functional theory (DFT). In our DFT computations, we used Vosko-Wilk-Nusair correlation energy functional and…

材料科学 · 物理学 2007-05-23 Hong-Jian Feng , Fa-Min Liu

Ba2CoWO6 (BCoW) has been synthesized in polycrystalline form by solid state reaction at 1200C. Structural characterization of the compound was done through X-ray diffraction (XRD) followed by Rietveld analysis of the XRD pattern. The…

In this work, we report the combined effect of donor (Nd) and acceptor (Li) co-doping at the Zn-site of ZnO ceramics on structural, microstructural and dielectric properties. Combining experimental observations with DFT based theoretical…

材料科学 · 物理学 2020-09-10 Md. Zahidur Rahaman , Hidekazu Tanaka , A. K. M. Akther Hossain

We study the electronic and magnetic properties of T$_2$AlC (T=Ti and Cr) compounds in the density-functional theory using the generalized gradient approximation (GGA) with consideration of strong Coulomb correlations (GGA+$U$) in the…

材料科学 · 物理学 2023-05-26 L. V. Bekenov , S. V. Moklyak , B. F. Zhuravlev , Yu. N. Kucherenko , V. N. Antonov

Electronic band structure and optical properties of zinc monochalcogenides with zinc-blende- and wurtzite-type structures were studied using the ab initio density functional method within the LDA, GGA, and LDA+U approaches. Calculations of…

软凝聚态物质 · 物理学 2009-11-13 S. Zh. Karazhanov , P. Ravindran , A. Kjekshus , H. Fjellvag , B. G. Svensson

The atomic and electronic structures of Pd3N, PdN and PdN2 were investigated using ab initio density-functional theory (DFT). We studied cohesive energy vs. volume equation of states (EOS) for a set of reported and hypothetical structures.…

材料科学 · 物理学 2013-10-11 Mohammed S. H. Suleiman , Daniel P. Joubert

The electrical resistivity, magnetic susceptibility, and heat capacity of sintered samples of Ca2Ir2O7, in which pentavalent Ir atoms with 5d4 electron configuration form a pyrochlore structure, have been studied. The obtained experimental…

强关联电子 · 物理学 2022-11-18 Yuki Nakayama , Yoshihiko Okamoto , Daigorou Hirai , Koshi Takenaka

We investigated the structural, elastic, electronic, vibrational, optical, thermodynamic and a number of thermophysical properties of W2N3 in this study using DFT based formalisms. The mechanical and dynamical stabilities have been…

材料科学 · 物理学 2024-02-26 Istiak Ahmed , F. Parvin , R. S. Islam , S. H. Naqib

The electron paramagnetic resonance is used to measure the single-ion anisotropy of Gd3+ ions in the pyrochlore structure of (Y{1-x}Gdx)2Ti2O7. A rather strong easy-plane type anisotropy is found. The anisotropy constant D is comparable to…

The electronic structure of fluorite crystals are studied by means of density functional theory within the local density approximation for the exchange correlation energy. The ground-state electronic properties, which have been calculated…

材料科学 · 物理学 2011-08-01 Emiliano Cadelano , Giancarlo Cappellini

In this paper the synthesis and study of the structural, morphological, electrical, magnetic and electronic properties of the LaBiFe2O6 novel material are reported. The material was produced using the standard ceramic method. The Rietveld…

DFT and AIMD are used to investigate the structural, stability, electronic, thermal, and optical properties of the quasi-2D C2N2O structure. The structure exhibits thermal and energy stability, signifying robustness under ambient…

材料科学 · 物理学 2026-04-30 Hemn. G. H , Nzar. R. Abdullah , Vidar Gudmundsson

The results of fabrication and characterization of atomic structure of nanocrystalline thin layers of Y2O3 in cubic and monoclinic phases is reported. Experimental data demonstrate crystalline ordering in nanocrystalline films with average…

材料科学 · 物理学 2022-12-28 D. W. Boukhvalov , D. A. Zatsepin , Yu. A. Kuznetsova , N. V. Gavrilov , A. F. Zatsepin

The magnetic and electronic properties of Eu2Ru2O7 are discussed in terms of the local ruthenium and europium coordinations, electronic band structure calculations and molecular orbital energy levels. A preliminary electronic structure was…

强关联电子 · 物理学 2015-06-23 S. Muñoz Pérez , R. Cobas , J. M. Cadogan , J. Albino Aguiar , S. Streltsov , X. Obradors

Evidence for another phase transition at 120 K in the metallic pyrochlore oxide Cd2Re2O7, following the structural transition at 200 K and followed by the superconducting transition at 1.0 K, is given through resistivity, magnetoresistance,…

强关联电子 · 物理学 2009-11-07 Zenji Hiroi , Jun-Ichi Yamaura , Yuji Muraoka , Masafumi Hanawa

In this work, the structural, optical, and electronic properties of rare-earth perovskites of the general formula RCrO3, where R represents the rare-earth Gd, Tb, Dy, Ho, Er, and Tm, have been studied in detail. These compounds were…

材料科学 · 物理学 2022-04-27 Jianhang Shi , Gayanath W. Fernando , Yanliu Dang , Steven L. Suib , Menka Jain