<?xml version='1.0' encoding='utf-8'?> <oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"> <dc:creator>Gu, Hanlin</dc:creator> <dc:creator>Rohmer, Jascha</dc:creator> <dc:creator>Jetter, Justin</dc:creator> <dc:creator>Lotnyk, Andriy</dc:creator> <dc:creator>Kienle, Lorenz</dc:creator> <dc:creator>Quandt, Eckhard</dc:creator> <dc:creator>James, Richard D.</dc:creator> <dc:date>2021-07-05</dc:date> <dc:description>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.</dc:description> <dc:identifier>https://archive.materialscloud.org/record/2021.102</dc:identifier> <dc:identifier>doi:10.24435/materialscloud:6c-hk</dc:identifier> <dc:identifier>mcid:2021.102</dc:identifier> <dc:identifier>oai:materialscloud.org:911</dc:identifier> <dc:language>en</dc:language> <dc:publisher>Materials Cloud</dc:publisher> <dc:rights>info:eu-repo/semantics/openAccess</dc:rights> <dc:rights>Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode</dc:rights> <dc:subject>Ceramics</dc:subject> <dc:subject>Cystallographic compatibility</dc:subject> <dc:subject>Shape memory</dc:subject> <dc:title>Exploding and weeping ceramics</dc:title> <dc:type>Dataset</dc:type> </oai_dc:dc>