135 citations · 629 across the 19 of their papers we have counts for
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Coexistence pressure for a martensitic transformation from theory and experiment: revisiting the bcc-hcp transition of iron under pressure
Nikolai A. Zarkevich, Duane D. Johnson
The coexistence pressure of two phases is a well-defined point at fixed temperature. In experiment, however, due to non-hydrostatic stresses and a stress-dependent potential energy…
Nudged-elastic band method with two climbing images: finding transition states in complex energy landscapes
Nikolai A. Zarkevich, Duane D. Johnson
The nudged-elastic band (NEB) method is modified with concomitant two climbing images (C2-NEB) to find a transition state (TS) in complex energy landscapes, such as those with serp…
NiTi shape-memory transformations: minimum-energy pathways between austenite, martensites, and kinetically-limited intermediate states
N. A. Zarkevich, D. D. Johnson
NiTi is the most used shape-memory alloy, nonetheless, a lack of understanding remains regarding the associated structures and transitions, including their barriers. Using a genera…
What is the stable atomic structure of NiTi austenite?
Nikolai A. Zarkevich, Duane D. Johnson
Nitinol (NiTi), the most widely used shape-memory alloy, exhibits an austenite phase that has yet to be identified. The usually assumed austenite structure is cubic B2, which has i…