In this study the first in situ high-pressure single-crystal X-ray diffraction experiments at Xpress, the Indo-Italian beamline of the Elettra synchrotron, Trieste (Italy), are reported. A description of the beamline experimental setup and of the procedures for single-crystal centring, data collection and processing, using diamond anvil cells, are provided. High-pressure experiments on a synthetic crystal of clinoenstatite (MgSiO3), CaCO3 polymorphs and a natural sample of leucophoenicite [Mn7Si3O12(OH)2] validated the suitability of the beamline experimental setup to: (i) locate and characterize pressure-induced phase transitions; (ii) solve ab initio the crystal structure of high-pressure polymorphs; (iii) perform fine structural analyses at the atomic scale as a function of pressure; (iv) disclose complex symmetry and structural features undetected using conventional X-ray sources.

Single-crystal diffraction at the high-pressure Indo-Italian beamline Xpress at Elettra, Trieste / P. Lotti, S. Milani, M. Merlini, B. Joseph, F. Alabarse, A. Lausi. - In: JOURNAL OF SYNCHROTRON RADIATION. - ISSN 0909-0495. - 27:Pt 1(2020 Jan 01), pp. 222-229. [10.1107/S1600577519015170]

Single-crystal diffraction at the high-pressure Indo-Italian beamline Xpress at Elettra, Trieste

P. Lotti
Primo
Writing – Original Draft Preparation
;
S. Milani
Secondo
Writing – Original Draft Preparation
;
M. Merlini
Writing – Original Draft Preparation
;
2020

Abstract

In this study the first in situ high-pressure single-crystal X-ray diffraction experiments at Xpress, the Indo-Italian beamline of the Elettra synchrotron, Trieste (Italy), are reported. A description of the beamline experimental setup and of the procedures for single-crystal centring, data collection and processing, using diamond anvil cells, are provided. High-pressure experiments on a synthetic crystal of clinoenstatite (MgSiO3), CaCO3 polymorphs and a natural sample of leucophoenicite [Mn7Si3O12(OH)2] validated the suitability of the beamline experimental setup to: (i) locate and characterize pressure-induced phase transitions; (ii) solve ab initio the crystal structure of high-pressure polymorphs; (iii) perform fine structural analyses at the atomic scale as a function of pressure; (iv) disclose complex symmetry and structural features undetected using conventional X-ray sources.
Elettra synchrotron; high pressure; single-crystal XRD; Xpress beamline; calcite; enstatite; leucophoenicite
Settore GEO/06 - Mineralogia
Settore GEO/09 - Georisorse Miner.Appl.Mineral.-Petrogr.per l'amb.e i Beni Cul
   Dipartimenti di Eccellenza 2018-2022 - Dipartimento di SCIENZE DELLA TERRA "ARDITO DESIO"
   MINISTERO DELL'ISTRUZIONE E DEL MERITO

   PIANO DI SOSTEGNO ALLA RICERCA 2015-2017 - LINEA 2 "DOTAZIONE ANNUALE PER ATTIVITA' ISTITUZIONALE"
1-gen-2020
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/703883
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