Polytypism of incommensurately modulated structures of crystalline bromine upon molecular dissociation under high pressure
Source abstract
Abstract
Polytypism of incommensurately modulated structures was hitherto unobserved. Here, it was found in solid bromine and iodine upon molecular dissociation under pressure up to 112 GPa. Single-crystal synchrotron x-ray diffraction in laser-heated diamond anvil cells revealed a number of allotropes of bromine and iodine, including polytypes of Br-IIIγ (Fmmm(00γ)s00) with γ varying within 0.18 to 0.3, coexisting at a given pressure. This finding opens a research area in the field of solid-solid phase transitions, disordered states of solid matter, and high-pressure structural studies. Published by the American Physical Society 2024
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Research context
OpenAlex topics: Energetic Materials and Combustion · Crystallography and molecular interactions · Chemical Thermodynamics and Molecular Structure
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
University of Bayreuth
Shandong University
Linköping University
University of Cologne
University of Edinburgh
European Synchrotron Radiation Facility
Deutsches Elektronen Synchrotron DESY
Funding
Deutsches Elektronen-Synchrotron · European Synchrotron Radiation Facility · China Scholarship Council · Universität Bayreuth · Deutsche Forschungsgemeinschaft · Linköpings Universitet · UK Research and Innovation
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