220 citations · 1k across the 18 of their papers we have counts for
18 papers
Interface-Controlled Defect Engineering in TiN/TaN Superlattices for Enhanced Hardness and Fracture Toughness
Zecui Gaoa, Qimin Wang, Julian Buchinger +6
TiNTaN superlattice coatings were designed to investigate how atomic-scale interface chemistry and defect-stabilized TaN layers govern hardness and fracture toughness. Guided by fi…
Point-defect engineering of MoN/TaN superlattice films: A first-principles and experimental study
Nikola Koutná, Rainer Hahn, Jakub Zálešák +6
Superlattice architecture represents an effective strategy to improve performance of hard protective coatings. Our model system, MoN/TaN, combines materials well-known for their hi…
High-entropy ceramic thin films; A case study on transition metal diborides
Paul H. Mayrhofer, Alexander Kirnbauer, Philipp Ertelthaler +1
High-entropy materials often outperform their lower-entropy relatives in various aspects, such as thermal stability and fracture toughness. While there are extensive research activ…
Vacancy-driven extended stability of cubic metastable Ta-Al-N and Nb-Al-N phases
Ferdinand Pacher, Paul H. Mayrhofer, David Holec
Quantum mechanical calculations had been previously applied to predict phase stability in many ternary and multinary nitride systems. While the predictions were very accurate for t…
Stability and elasticity of metastable solid solutions and superlattices in the MoN-TaN system: a first-principles study
Nikola Koutná, David Holec, Martin Friák +2
Employing ab initio calculations, we discuss chemical, mechanical, and dynamical stability of MoN-TaN solid solutions together with cubic-like MoN/TaN superlattices, as another mat…
Point defects stabilise cubic Mo-N and Ta-N
Nikola Koutná, David Holec, Ondřej Svoboda +2
We employ \textit{ab initio} calculations to investigate energetics of point defects in metastable rocksalt cubic Ta-N and Mo-N. Our results reveal a strong tendency to off-stoichi…