Results 41 to 50 of about 2,066 (185)
Advanced Functional Materials, EarlyView.This study uncovers a new switching mechanism in HfO2 and ZrO2, where the absence of a non‐polar layer along the a‐direction induces interaction between polar layers. Consequently, the switching barriers for growth are lower than those for nucleation in this direction, leading to a size‐dependent coercive field that matches experimental observations ...
Kun Hee Ye +6 more
wiley +1 more source
Small scale fracture of multi metal carbide coatings [PDF]
, 2019 The micromechanical behavior of sputtered multi metal carbide (Hf-Nb-Ta-Zr)C coatings was investigated. A equiatomic high entropy alloy (Hf-Nb-Ta-Zr) and high density graphite were used as targets to reactively sputter carbide coatings on Si (100) with
Amalraj, M. , +4 more
core +1 more source
Stable crack growth geometries as a strategy to circumvent FIB artefacts in small scale fracture testing [PDF]
Die vorliegende Arbeit befasst sich mit stabilen Risswachstumsgeometrien, die durch in-situ-Mikrobiegeexperimente untersucht werden. Es werden mehrere Experimente an unterschiedlichen Geometrien in einem Rasterelektronenmikroskop (REM) durchgeführt, um ...
Okotete, Eloho
core +2 more sources
A Tracer Diffusion Study of Diverse Photo‐Ionic Phenomena in Strontium Titanate
Advanced Functional Materials, EarlyView.Two strong interfacial photo‐ionic effects are demonstrated for the model system SrTiO3 through the application of isotope exchange experiments: UV illumination is found to enhance the oxygen surface exchange coefficient by several orders of magnitude and to depress the surface space‐charge potential substantially.
David M. Schwenkel +3 more
wiley +1 more source
Effects of Mo, Nb, Ta, Ti, and Zr on Mechanical Properties of Equiatomic Hf-Mo-Nb-Ta-Ti-Zr Alloys
Entropy, 2018 Nowadays refractory high-entropy alloys (RHEAs) are regarded as great candidates for the replacement of superalloys at high temperature. To design a RHEA, one must understand the pros and cons of every refractory element. However, the elemental effect on
Ko-Kai Tseng +5 more
doaj +1 more source
Damage-tolerant oxides by imprint of an ultra-high dislocation density [PDF]
Dislocations in ductile ceramics offer the potential for robust mechanical performance while unlocking versatile functional properties. Previous studies have been limited by small volumes with dislocations and/or low dislocation densities in ceramics ...
Bruder, Enrico +5 more
core +2 more sources
Frontier Advances of Emerging High‐Entropy Anodes in Alkali Metal‐Ion Batteries
Advanced Functional Materials, EarlyView.Recent advances in microscopic morphology control of high‐entropy anode materials for alkali metal‐ion batteries. Abstract With the growing demand for sustainable energy, portable energy storage systems have become increasingly critical. Among them, the development of rechargeable batteries is primarily driven by breakthroughs in electrode materials ...
Liang Du +14 more
wiley +1 more source
Физико-химические аспекты изучения кластеров, наноструктур и наноматериаловHigh-entropy alloys based on refractory metals, possessing an unusual combination of physical, mechanical, tribological, electrophysical, etc. properties, can be recommended for use in various fields of industry and medicine.
Yu.F. Ivanov +8 more
doaj +1 more source
Compositionally Complex AlB2-type Diborides in Dissociated Air Plasma [PDF]
Multi-metal compositionally complex (CC) AlB2-type diboride solid solutions (SS) containing IV-V-VI group elements are garnering a steadily growing research interest.
Balat-Pichelin, M. +4 more
core +2 more sources
Advanced Functional Materials, EarlyView.Ferroelectric memcapacitors enable non‐volatile, voltage‐programmable capacitance tuning for adaptive electronics. A TiN/HfZrO/TiN device stack demonstrates more than eight stable capacitance states within a 24 pF memory window in compact 60 ×$\times$ 60 μm2$\umu{\rm m}^{2}$ devices at low operating voltages.
Deepika Yadav +6 more
wiley +1 more source