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The structural, electrical, optical, and mechanical characteristics of the lead-free halide double perovskites Cs2NaTlX6 X = F, Cl, Br are calculated by utilizing PBE functional within generalized gradient approximation GGA under the…

材料科学 · 物理学 2023-02-07 Mohammed Mehedi Hasan , Nazmul Hasan , Alamgir Kabir

Double perovskite-based magnets wherein frustration and competition between emergent degrees of freedom are at play can lead to novel electronic and magnetic phenomena. Herein, we report the electronic structure and magnetic properties of…

Here, the first-principles predictions on the structural stability, magnetic behavior and electronic structure of B-site ordered double perovskite Nd$_{2}$FeCrO$_{6}$ have been reported. Initially, the ground state of the parent single…

材料科学 · 物理学 2022-01-10 M. D. I. Bhuyan , Rana Hossain , Ferdous Ara , M. A. Basith

The electronic structure and energetic stability of A$_2$BX$_6$ halide compounds with the cubic and tetragonal variants of the perovskite-derived K$_2$PtCl$_6$ prototype structure are investigated computationally within the frameworks of…

Double perovskite Bi$_2$FeCrO$_6$, related with BiFeO$_3$, is very interesting because strong ferroelectricity and high magnetic Curie temperature beyond room temperature are observed in it. However, existing density-functional-theory (DFT)…

材料科学 · 物理学 2014-03-18 Zhe-Wen Song , Bang-Gui Liu

Recently synthesized quadruple perovskite CuCu$_3$Fe$_2$Re$_2$O$_{12}$ possesses strong ferromagnetism and unusual electron properties, including enhanced electronic specific heat. Application of the first principles electronic structure…

强关联电子 · 物理学 2025-02-25 A. I. Poteryaev , Z. V. Pchelkina , S. V. Streltsov , Y. Long , V. Yu. Irkhin

Halide perovskites (HPs) are widely viewed as promising photovoltaic and light-emitting materials for their suitable band gaps in the visible spectrum. Density functional theory (DFT) calculations employing (semi)local exchange-correlation…

材料科学 · 物理学 2022-12-06 Jiyuan Yang , Tianyuan Zhu , Shi Liu

Optical spectroscopy, X-ray diffraction measurements, density functional theory (DFT) and density functional theory + embedded dynamical mean field theory (DFT+eDMFT) have been used to characterize structural and electronic properties of…

Magnetic refrigeration at room-temperature is a technology that could potentially be more environmentally-friendly, efficient and affordable than traditional refrigeration. The search for suitable materials for magnetocaloric refrigeration…

强关联电子 · 物理学 2019-03-13 C. Gauvin-Ndiaye , A. -M. S. Tremblay , R. Nourafkan

The 3$d$-5$d$ based double perovskites offer an ideal playground to study the interplay between electron correlation ($U$) and spin-orbit coupling (SOC) effect, showing exotic physics. The Sr$_2$FeIrO$_6$ is an interesting member in this…

Atomically-thin magnetic crystals have been recently isolated experimentally, greatly expanding the family of two-dimensional materials. In this Article we present an extensive comparative analysis of the electronic and magnetic properties…

强关联电子 · 物理学 2019-09-06 Guido Menichetti , Matteo Calandra , Marco Polini

In this work, density functional theory (DFT) is used to find out the ground state structures of A2AuScX6 (A= Cs, Rb; X= Cl, Br, I) double Perovskite (DP) halides for the first time. The DP A2AuScX6 halides were studied for their structural…

材料科学 · 物理学 2023-10-03 S. Mahmud , M. A. Ali , M. M. Hossain , M. M. Uddin

We have performed a comprehensive, first-principles high-throughput study of the magnetic properties of halide double perovskites, $Cs_2BB^\prime Cl_6$, with magnetic ions occupying one or both B and B$^\prime$ sites. Our findings indicate…

材料科学 · 物理学 2023-06-16 Utkarsh Singh , Johan Klarbring , Igor A. Abrikosov , Sergei I. Simak

This paper presents the phase stability, opto-electronic and thermo-electric behavior of X2AuYZ6 (X = Cs, Rb; Z = Cl/Br/I) double perovskite halides by using the DFT method. The compounds belong to the cubic arrangement and are verified by…

材料科学 · 物理学 2024-04-25 S. Mahmud , M. A. Ali , M. M. Hossain , M. M. Uddin

We study the structural, electronic, and magnetic properties of Co$_2$ZAl compounds employing a pseudopotential electronic bandstructure method. The stability of the compounds is established through the formation and cohesive energy…

材料科学 · 物理学 2020-08-11 Sashi Nepal , Ramesh Dhakal , Iosif Galanakis

Halide double perovskites are an emerging class of semiconductors with tremendous chemical and electronic diversity. While their bandstructure features can be understood from frontier-orbital models, chemical intuition for optical…

材料科学 · 物理学 2023-09-04 Raisa-Ioana Biega , Yinan Chen , Marina R. Filip , Linn Leppert

We investigate the thermoelectric properties of two newly synthesized columnar double halide perovskites Cs$_2$AgPdCl$_5$ and Cs$_2$AgPtCl$_5$. These materials accommodate a distorted local polyhedral architecture with tetrahedral symmetry…

材料科学 · 物理学 2026-02-13 Heena , Vineet Kumar Pandey , Ambesh Dixit , Anver Aziz , Sung Gu Kang , K. C. Bhamu

We investigate the lead-free halide double perovskites (HDPs) Cs$ _2BB'X_6$ ($B$=Ag, Na; $B'$=In, Bi; $X$=Cl, Br) via first-principles calculations. We find that both the geometric and electric structures of the HDPs obtained by the…

材料科学 · 物理学 2022-08-08 Yuyang Ji , Peize Lin , Xinguo Ren , Lixin He

Double perovskite halides are promising materials for renewable energy production, meeting the criteria to address energy scarcity issues. As a result, studying these halides could be useful for optoelectronic and solar cell applications.…

材料科学 · 物理学 2024-10-21 M. A. Rayhan , M. M. Hossain , M. M. Uddin , S. H. Naqib , M. A Ali

In this work, we report the synthesis and investigation of structural, electronic, and magnetic properties of La$_{1.5}$Ca$_{0.5}$(Co$_{0.5}$Fe$_{0.5}$)IrO$_6$. Our polycrystalline sample forms as a single-phase double perovskite in…

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