Electrodeposition conditions-dependent crystal structure, morphology and electronic properties of Bi films

Fedotov, A. S.; Shendyukov, Vladislav; Tsybulskaya, L. S.; Перевозников, С. С.; Dong, Mengge; Xue, Xiangxin; Feng, Xia‐Ting; Sayyed, M.I.; Zubar, T.I.; Труханов, А.В.; Тишкевич, Д.И.

doi:10.1016/j.jallcom.2021.161451

Cited by 35 publications

(17 citation statements)

References 69 publications

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“…However, the crystal orientation is not so much determined by the current density as the J c is > 2 mA/cm 2 . The morphology of the polyhedral-like shape with different grain sizes is formed, which can be recognized as the rhombohedral form of Bi grains [ 26 , 27 , 28 ], as shown in Figure 1 . All films show a pattern of polycrystalline and pure rhombohedral Bi [ 29 ], and the film structure and the main plane directions are dependent on the J c .…”

Section: Resultsmentioning

confidence: 99%

Electroplating Deposition of Bismuth Absorbers for X-ray Superconducting Transition Edge Sensors

Chen

et al. 2021

Materials

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An absorber with a high absorbing efficiency is crucial for X-ray transition edge sensors (TESs) to realize high quantum efficiency and the best energy resolution. Semimetal Bismuth (Bi) has shown greater superiority than gold (Au) as the absorber due to the low specific heat capacity, which is two orders of magnitude smaller. The electroplating process of Bi films is investigated. The Bi grains show a polycrystalline rhombohedral structure, and the X-ray diffraction (XRD) patterns show a typical crystal orientation of (012). The average grain size becomes larger as the electroplating current density and the thickness increase, and the orientation of Bi grains changes as the temperature increases. The residual resistance ratio (RRR) (R300 K/R4.2 K) is 1.37 for the Bi film (862 nm) deposited with 9 mA/cm2 at 40 °C for 2 min. The absorptivity of the 5 μm thick Bi films is 40.3% and 30.7% for 10 keV and 15.6 keV X-ray radiation respectively, which shows that Bi films are a good candidate as the absorber of X-ray TESs.

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Section: Resultsmentioning

confidence: 99%

Electroplating Deposition of Bismuth Absorbers for X-ray Superconducting Transition Edge Sensors

Chen

et al. 2021

Materials

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“…Although stable test conditions cannot be achieved, the photoelectric response current of more than µA magnitude only at 0.1 mV indicates the research potential of NbAs in photoelectric response detection [6,27,28].…”

Section: Photoelectric Response Detection Of Nbas Crystalmentioning

confidence: 99%

“…The photoelectric responsivity (R) and detection rate (D*) can be defined as follows [28][29][30][31][32]:…”

Section: Photoelectric Response Detection Of Nbas Crystalmentioning

confidence: 99%

Preparation of NbAs Single Crystal by the Seed Growth Process

Sun¹,

Zhao²,

Huo³

et al. 2022

Crystals

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A Weyl semimetal is a novel crystal with low-energy electronic excitations that behave as Weyl fermions. It has received worldwide interest and was believed to have introduced the next era of condensed matter physics after graphene and three-dimensional topological insulators. However, it is not easy to obtain a single large-sized crystal because there are many nucleations in the preparation process. A bottom-seed CVT growth method is proposed in this paper, and we acquired the large-sized, high-quality NbAs single crystals up to 4 × 3 × 3 mm3 finally. X-ray diffraction and STEM confirmed that they are tetragonal NbAs, which the key is to using the seed crystal in a vertical growth furnace. Notably, the photoelectric properties of the crystal are obtained under the existing conditions, which paves the way for follow-up work.

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“…Currently, W–Cu composite materials are widely used in various fields of science and technology [ 1 , 2 , 3 , 4 ]. The number of materials that demonstrate excellent properties under extreme conditions, such as high voltage, extremely high temperatures, or hazardous radiation fields, typically include high-density and melting materials based on Nb, Mo, Ta, W, Re, and Bi [ 5 , 6 , 7 , 8 , 9 ]. Composites made of tungsten–copper (W–Cu) components have integrated properties that include low thermal expansion, high arc and corrosion resistance, high hardness and strength, and a high melting point [ 10 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Isostatic Hot Pressed W–Cu Composites with Nanosized Grain Boundaries: Microstructure, Structure and Radiation Shielding Efficiency against Gamma Rays

et al. 2022

Self Cite

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The W–Cu composites with nanosized grain boundaries and high effective density were fabricated using a new fast isostatic hot pressing method. A significantly faster method was proposed for the formation of W–Cu composites in comparison to the traditional ones. The influence of both the high temperature and pressure conditions on the microstructure, structure, chemical composition, and density values were observed. It has been shown that W–Cu samples have a polycrystalline well-packed microstructure. The copper performs the function of a matrix that surrounds the tungsten grains. The W–Cu composites have mixed bcc-W (sp. gr. Im3m) and fcc-Cu (sp. gr. Fm3m) phases. The W crystallite sizes vary from 107 to 175 nm depending on the sintering conditions. The optimal sintering regimes of the W–Cu composites with the highest density value of 16.37 g/cm3 were determined. Tungsten–copper composites with thicknesses of 0.06–0.27 cm have been fabricated for the radiation protection efficiency investigation against gamma rays. It has been shown that W–Cu samples have a high shielding efficiency from gamma radiation in the 0.276–1.25 MeV range of energies, which makes them excellent candidates as materials for radiation protection.

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Electrodeposition conditions-dependent crystal structure, morphology and electronic properties of Bi films

Cited by 35 publications

References 69 publications

Electroplating Deposition of Bismuth Absorbers for X-ray Superconducting Transition Edge Sensors

Electroplating Deposition of Bismuth Absorbers for X-ray Superconducting Transition Edge Sensors

Preparation of NbAs Single Crystal by the Seed Growth Process

Isostatic Hot Pressed W–Cu Composites with Nanosized Grain Boundaries: Microstructure, Structure and Radiation Shielding Efficiency against Gamma Rays

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