Synchrotron XRD and structure evolution of 4Hb-TaSe 2 at high pressure. (a) Representative powder XRD patterns between 1.5 and 40.8 GPa (run 1). (b) Pressure-dependent normalized compression...

2004年1月1日 · Single-phase layered nanocomposite containing 4Hb-TaS 2 and poly (ethylene oxide) [PEO] has been first synthesized by using the exfoliation–adsorption technique. It has been characterized by powder X-ray diffraction (XRD) and electrical dc resistivity measurements.

A second run of high-pressure XRD ( Figure S10) and Raman-scattering measurements ( Figure S11) undoubtedly confirms the iSPT of 4Hb-TaSe 2 at ∼10 GPa and the transition from quasi-2D to quasi...

2023年3月6日 · A second run of high-pressure XRD (Figure S10) and Raman-scattering measurements ( Figure S11 ) undoubtedly confirms the iSPT of 4 Hb -TaSe 2 at ∼ 10 GPa and the transition

XRD spectrum. Only peaks belonging to the (00l) family of 4Hb-TaS 2 are present, confirming that the sample is a single-crystal and not a phase-separated mixture of 1T and 2H phases. Fig. S1B displays the parallel-beam XRD spectrum used to discern between 4Hb and other possible polytypes. The extracted lattice constants are a=3.3381(4) Å and c ...

2024年4月10日 · The samples are characterized by XRD, TEM, EDS and magnetization measurements (Supplementary Figs. 8 and 9). Se in 4Hb crystals is used to stabilize the 4Hb phase and improve the properties...

1973年8月1日 · A new polymorph of the layered compound tantalum disulfide, 4Hb-TaS 2, has been prepared in single crystal form. Measurements of magnetic susceptibility, electrical resistivity, and differential heat capacity show two first order transitions at 20 and 315°K.

We study 4Hb-TaS, which naturally realizes an alternating stacking of 1T-TaS and 1H-TaS structures. The former is a well-known Mott insulator, which has recently been proposed to host a gapless spin-liquid ground state. The latter is a superconductor known to also host a competing charge density wave state.

在这里，我们将扫描隧道显微镜和角度分辨宏观传输相结合，以研究候选手性超导体 4Hb-TaS2。 我们揭示了隧穿电导中的准周期一维调制，并伴有两倍对称超导临界场。

1, 3 and 5 %wt of 4‐hydroxybenzoic acid (4HB) was successfully loaded into sodium alginate and polyvinyl alcohol‐based hydrogel composite for enhancement of antioxidant activities. Hydrogel was...