2026-04-21T08:35:08Z https://archive.materialscloud.org/oai2d

oai:materialscloud.org:911 2021-07-05T16:38:40Z openaire_data community-mcarchive

Gu, Hanlin Rohmer, Jascha Jetter, Justin Lotnyk, Andriy Kienle, Lorenz Quandt, Eckhard James, Richard D. Gu, Hanlin Rohmer, Jascha Jetter, Justin Lotnyk, Andriy Kienle, Lorenz Quandt, Eckhard James, Richard D. 2021-07-05 The systematic tuning of the lattice parameters to achieve improved kinematic compatibility between phases is a broadly effective strategy for improving the reversibility, and lowering the hysteresis, of solid-solid phase transformations. Here, "kinematic compatibility" refers to the fitting together of the phases. We present an apparently paradoxical example in which tuning to near perfect compatibility in (Zr/Hf)O2-(YNb)O4 results in a high degree of irreversibility, as manifested in explosive or "weeping" behavior on cooling through the tetragonal-to-monoclinic phase transformation. In the case of weeping the polycrystal slowly and steadily falls apart at the grain boundaries. These effects occur without chemical change. Finally, tuning to satisfy a condition we term the equidistance condition results in reversible behavior with the lowest hysteresis in this system. We give evidence that all these observations are explained by a more careful analysis of compatibility of the polycrystal, accounting for sample shape. These results show that an extreme diversity of behaviors, from reversible to explosive, is possible in a chemically homogeneous system by manipulating conditions of compatibility in unexpected ways. They provide critical concepts underlying the current search for a shape memory oxide ceramic. text/plain application/zip text/markdown https://doi.org/10.24435/materialscloud:6c-hk oai:materialscloud.org:911 mcid:2021.102 eng Materials Cloud https://doi.org/10.1038/s41586-021-03975-5 https://archive.materialscloud.org/communities/mcarchive https://doi.org/10.24435/materialscloud:kh-b3 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Ceramics Cystallographic compatibility Shape memory Exploding and weeping ceramics info:eu-repo/semantics/other