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High-entropy concept introduced with a promising paradigm to obtain exotic physical properties has motivated us to explore the thermoelectric properties of Sr-substituted high-entropy rare-earth cobaltates i.e.,…

材料科学 · 物理学 2023-03-07 Ashutosh Kumar , Diana Dragoe , David Bérardan , Nita Dragoe

Practical applications of thermoelectric (TE) materials are constrained by less developments of high-performance n-type materials compared to their p-type counterparts. Chalcopyrite CdSnAs2 is a promising n-type semiconductor for…

材料科学 · 物理学 2024-12-03 Shoki Kishida , Norihiko. L. Okamoto , Ryoji Katsube , Akira Nagaoka , Yoshitaro Nose

SnTe, an archetypical topological crystalline insulator, often shows a transition from a highly symmetric cubic phase to a rhombohedral structure at low temperatures. In order to achieve the highly symmetric cubic phase at low temperatures…

材料科学 · 物理学 2022-04-06 Ayanesh Maiti , Ankita Singh , Kartik K. Iyer , Arumugam Thamizhavel

Phase transitions in metal halide perovskites triggered by external provocations produce significantly different material properties, providing a prodigious opportunity for a comprehensive applications. In the present study, the first…

Discovery of exotic phases of matter from the topologically non-trivial systems not only makes the research on topological materials more interesting but also enriches our understanding of the fascinating physics of such materials.…

The easily tunable emission of halide perovskite nanocrystals throughout the visible spectrum makes them an extremely promising material for light-emitting applications. Whereas high quantum yields and long-term colloidal stability have…

The in plane coefficient of thermal expansion (CTE) and the residual stress of nanostructured W based coatings are extensively investigated. The CTE and the residual stresses are derived by means of an optimized ad-hoc developed…

材料科学 · 物理学 2017-10-30 E. Besozzi , D. Dellasega , A. Pezzoli , A. Mantegazza , M. Passoni , M. G. Beghi

Improving the critical transition temperature (TC) of Bi(Pb)SrCaCuO (B(P)SCCO) high-temperature superconductors is important, however, considerable challenges exist. In this study, on the basis of the metamaterial structure and the idea…

超导电性 · 物理学 2020-01-17 Honggang Chen , Yongbo Li , Mingzhong Wang , Guangyu Han , Miao Shi , Xiaopeng Zhao

Copper ferrite nanoparticles have catalytic activity for hydrogen peroxide, which can be used in many fields. This characteristic comes from the physical properties of matters at nanometer scale. Thus, controlling the size and aggregation…

应用物理 · 物理学 2023-10-13 Zihan Huang , Siyi Li , He Ding , Piao Pingyang , Jun Xinhuang

Some topological insulators become superconducting when doped with Cu and Pd. Superconductivity in a non-superconductor may be induced by proximity effect: i.e. Contacting a non-superconductor with a superconductor. The superconducting…

超导电性 · 物理学 2015-12-31 P. Arevalo-López , R. E. López-Romero , R. Escudero

Fast scanning calorimetry (FSC) was employed to investigate glass softening dynamics in amorphous solid water (ASW) nano-aggregates with thicknesses ranging from 2 to 20 nm. ASW nano-aggregates were prepared by vapor-deposition on the…

软凝聚态物质 · 物理学 2014-11-03 Deepanjan Bhattacharya , Liam OReilly , Vlad Sadtchenko

Predicting the microstructure during selective laser sintering (SLS) is of great interests, which can compliment the current time and cost expensive trial-and-error principle with an efficient computational design tool. However, it still…

材料科学 · 物理学 2019-08-09 Yangyiwei Yang , Olav Ragnvaldsen , Yang Bai , Min Yi , Bai-Xiang Xu

The paper presents the results of investigation of the structure of porous condensates of Ag-NaCl and Cu-NaCl composition; chemical and phase compositions and dimensions of nanoparticles, produced from the vapour phase by EBPVD method.…

材料科学 · 物理学 2019-01-04 Yu. A. Kurapov , S. E. Litvin , S. M. Romanenko , G. G. Didikin , N. N. Belyavina

At the ultra-thin film limit, quantum confinement strongly improves thermoelectric figure of merit in materials such as Sb$_2$Te$_3$ and Bi$_2$Te$_3$. These high quality films have only been realized using well controlled techniques such as…

We present in this paper the structural and magnetic properties of high aspect ratio Co nanoparticles (~10) at high temperatures (up to 623 K) using in situ X ray diffraction (XRD) and SQUID characterizations. We show that the anisotropic…

Identification of novel materials with enhanced thermoelectric (TE) performance is critical for advancing TE research. In this direction, this is the first report on TE properties of low-cost, nontoxic, and abundant core-shell Cu@Cu2O…

介观与纳米尺度物理 · 物理学 2020-12-02 Vikash Sharma , Gunadhor Singh Okram , Divya Verma , Niranjan Prasad Lalla , Yung-Kang Kuo

The study investigates the density, phase composition, microstructure and mechanical properties (microhardness, fracture toughness) of binderless WC + SiC and WC + SiC + C ceramics obtained by Spark Plasma Sintering (SPS). Nanopowders of…

Cesium based halide perovskites, such as CsPbI3 and CsSnI3, have emerged as exceptional candidates for next generation photovoltaic and optoelectronic technologies, but their practical application is limited by temperature dependent phase…

材料科学 · 物理学 2025-10-30 Atefe Ebrahimi , Franco Pellegrini , Stefano De Gironcoli

Samples of heavy fermion compound CeCu6 were prepared by hot-press technique. Temperature-dependent (5-300 K) thermoelectric transport properties of the samples were measured. The dimensionless figure-of-merit (ZT) was optimized by varying…

材料科学 · 物理学 2013-12-16 Mani Pokharel , Tulashi Dahal , Zhifeng Ren , Cyril Opeil

The Poly(vinylidene fluoride)/CaCu3Ti4O12 (CCTO) nanocrystal composite films (85nm) with relatively high dielectric permittivity (90 at 100Hz) were prepared by the solution casting followed by spin coating technique. The structural, the…

材料科学 · 物理学 2013-01-18 P. Thomas , S. Satapathy , K. Dwarakanath , K. B. R. Varma