A5060559269- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Supercapacitor Materials and Fabrication
- Iron-based superconductors research
- Advanced battery technologies research
- Layered Double Hydroxides Synthesis and Applications
- Rare-earth and actinide compounds
- Inorganic Chemistry and Materials
- MXene and MAX Phase Materials
- Physics of Superconductivity and Magnetism
- Advancements in Battery Materials
- Metal Extraction and Bioleaching
- Superconductivity in MgB2 and Alloys
- Minerals Flotation and Separation Techniques
- Advanced Battery Materials and Technologies
- 2D Materials and Applications
- Mineral Processing and Grinding
- Stochastic processes and statistical mechanics
- Enzyme Structure and Function
- Advanced NMR Techniques and Applications
- Boron and Carbon Nanomaterials Research
- Advanced Thermoelectric Materials and Devices
- Advanced Photocatalysis Techniques
- Metallurgical Processes and Thermodynamics
- Chalcogenide Semiconductor Thin Films
Max Planck Institute for Chemical Physics of Solids
2023-2025
University of Zurich
2018-2024
Zhejiang University
2015-2018
Hangzhou Xixi hospital
2017
Strain is ubiquitous in solid-state materials, but despite its fundamental importance and technological relevance, leveraging externally applied strain to gain control over material properties still infancy. In particular, the diverse phase transitions topological states two-dimensional (2D) transition metal dichalcogenides (TMDs) remains an open challenge. Here, we exploit uniaxial stabilize long-debated structural ground state of 2D semimetal IrTe$_2$, which hidden unstrained samples....
Compared to traditional superhard materials with high electron density and strong covalent bonds, alloy mainly composed of metallic bonding structures typically have great toughness lower hardness. Breaking through the limits is a preface long term topic, which significance value for improving comprehensive mechanical properties materials. Here, we report on discovery cubic semiconducting material Ti2Co large Vickers hardness Hvexp = 6.7 GPa low fracture KICexp =1.51 MPa m0.5. Unexpectedly,...
TOC illustrates the polymorphic transformation of FeS 2 from marcasite to pyrite, highlighting energy barrier (Δ G ) associated with phase transition.
The upper critical field is a fundamental measure of the strength superconductivity in material. It also cornerstone for realization superconducting magnet applications. arises because Cooper pair breaking at limiting field, which due to Pauli paramagnetism electrons. maximal possible magnetic this effect commonly known as paramagnetic limit given μ0HPauli ≈ 1.86[T/K]·Tc weak-coupling Bardeen-Schrieffer-Cooper (BCS) superconductor. violation only rarely observed. Exceptions include some...
CoO microspheres and metallic Co could be successfully synthesized by simply reacting cobalt acetate with a mixture solvent of ethylene glycol deionized water in hydrothermal process for different times. As the reaction proceeded, α-Co(OH)2, were produced. To understand phase evolution processes from α-Co(OH)2 to then Co, range time-dependent experiments carried out, intermediate products obtained at times investigated detail. The investigation revealed that actually evolved as precursor....
Abstract α‐Form Co x Ni 1– hydroxides with different Co/Ni ratios were synthesized by a chemical co‐precipitation method under mild conditions. The effects of ratio on the structure, morphology, and supercapacitive properties α‐form investigated in detail. had structures similar to those hydrotalcite α‐Co(OH) 2 , they exhibited better electrochemical performance than testing XRD, FTIR, (when ≠ 0). highest specific capacitance at 1 A g –1 for (for = 0.2) is 1696.7 F . An asymmetric...
The Ti$_2$Ni and the related $\eta$-carbide structure are known to exhibit various intriguing physical properties. with cubic space group $Fd\bar{3}m$ is surprisingly complex, consisting of a unit cell 96 metal atoms. compounds correspond filled version structure. Here, we report on superconductivity in type suboxides Ti$_4$M$_2$O M = Co, Rh, Ir. We have successfully synthesized all three single phase form. find be type-II bulk superconductors transition temperatures $T_{\rm c}$ 2.7, 2.8,...
We report on the structural and microscopic superconducting properties of ${\mathrm{Ca}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}\mathrm{AlSi}$ solid solution. Specifically, we have realized continuous solution, which for all members, other than $x=0$ (CaAlSi), crystallizes in ${\mathrm{AlB}}_{2}$-type structure. For CaAlSi, present an improved model where Al/Si layers are buckled, leading to a 6-folded structure along crystallographic $c$ direction. We, furthermore, find indications instability...
Abstract Layered 2D materials such as transition metal chalcogenides are promising electrocatalysts for hydrogen evolution reaction (HER) due to the flexible compositions and distinctive electronic structures. However, their active sites usually stem from edges, whereas basal planes with higher surface area difficult activate water dissociation H 2 evolution. Here, a novel quasi‐2D AgRuO 3 compound, which can be readily activated by cyclic voltammetry split into layered structures more...
Pyrite, also known as fool's gold is the thermodynamic stable polymorph of FeS 2 .
Here we report muon spin rotation (muSR) experiments on the temperature and field dependence of effective magnetic penetration depth (lambda) in eta-carbide-type suboxide Ti4Ir2O, a superconductor with an considerably high upper critical field. Temperature depth, obtained from transverse-field (TF)-muSR measurements, is perfect agreement isotropic fully gaped superconducting state. Furthermore, our ZF muSR results confirm that time-reversal symmetry preserved We find, however, notably low...
RhBi$_2$ is a polymorphic system that exhibits two distinct phases. in the triclinic phase has been identified as weak topological insulator with van Hove singularity point close to Fermi energy. Thus, expected exhibit exotic quantum properties under strain or pressure. In this study, we report on emergence of superconductivity monoclinic external pressures. The electrical resistivity behavior single crystal studied at wide range applied pressures up 40 GPa. We observe pressure-induced...
Here we report muon spin rotation (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mi>μ</a:mi><a:mi>SR</a:mi></a:mrow></a:math>) experiments on the temperature and field dependence of effective magnetic penetration depth <b:math xmlns:b="http://www.w3.org/1998/Math/MathML"><b:mrow><b:mi>λ</b:mi><b:mo>(</b:mo><b:mi>T</b:mi><b:mo>)</b:mo></b:mrow></b:math> in <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"><c:mi>η</c:mi></c:math>-carbide-type suboxide <d:math...
The interplay between superconductivity and charge order is a central focus in condensed matter research, with kagome lattice systems offering unique insights. superconductor LaRu$_{3}$Si$_{2}$ ($T_{\rm c}$ ${\simeq}$ 6.5 K) exhibits hierarchy of transitions: primary co,I}$ 400 K), secondary co,II}$ 80 an additional transition at ($T^{*}$ $\simeq$ 35 K). transitions $T_{\rm $T^{*}$ are linked to electronic magnetic responses as revealed by muon-spin rotation magnetotransport experiments....
We revised normal-state and superconducting properties of an alloy superconductor Nb4Rh2C1−δ through electrical transport, magnetic susceptibility, specific heat. Our results reveal that it is a Pauli paramagnetic bad metal, strongly coupled with heat jump ΔCe/γnTc∼1.65 double s-wave gap symmetry. The evolution transition temperature Tc was investigated by high-pressure transport. It found exhibits nonmonotonic pressure dependence maximum Tcmax∼11 K, which record for the η-carbide...
IrTe2undergoes a series of charge-ordered phase transitions below room temperature that are characterized by the formation stripes Ir dimers different periodicities. Full hemispherical x-ray photoelectron diffraction (XPD) experiments have been performed to investigate atomic position changes undergone near surface 1T-IrTe2in first-order transition, from (1 × 1) (5 phase. Comparison between experiment and simulation allows us identify consequence dimerization on atoms local environment. We...