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

Lotti, Paolo; Milani, Simone; Merlini, Marco; Joseph, Boby; Alabarse, Frederico; Lausi, Andrea

doi:10.1107/s1600577519015170

Cited by 33 publications

(27 citation statements)

References 39 publications

(38 reference statements)

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“…Rietveld refinement analysis of this data confirmed that the sample was pure hexagonal phase (space group P6 3 /mmc). High‐pressure X‐ray diffraction studies were conducted at the Xpress beamline [ 21 ] at Elettra synchrotron center, Trieste. Two pressure runs were conducted with silicone oil or a 4:1 methanol–ethanol (ME) mixture as the pressure‐transmitting medium (PTM).…”

Section: Methodsmentioning

confidence: 99%

High‐Pressure Structural Investigation of Anomalous Hall Effect Compound Mn₃Sn up to 9 GPa

Lingannan

Singh

Joseph

et al. 2021

Physica Rapid Research Ltrs

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A systematic synchrotron high‐pressure X‐ray powder diffraction study of Mn3Sn up to 9 GPa is reported. In this pressure range, the crystal symmetry remains in the hexagonal P63/mmc space group, with a continuous reduction of the lattice parameters. Analysis indicates that the Mn3Sn system may have a different magnetic ground state above 4 GPa due to varying local atomic interactions. This is brought about by the slightly varying compression rate for the in‐plane a‐ and out‐of‐plane c‐axis, respectively, ≈−0.0235 and ≈−0.0176 Å GPa−1. The results contribute to the understanding of the crystal structure to the external continuous tuning parameter pressure, which modulates the geometrical arrangement of the atomic species in Mn3Sn, thus impacting the interesting physical properties such as the large anomalous Hall effect.

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Section: Methodsmentioning

confidence: 99%

High‐Pressure Structural Investigation of Anomalous Hall Effect Compound Mn₃Sn up to 9 GPa

Lingannan

Singh

Joseph

et al. 2021

Physica Rapid Research Ltrs

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“…Ambient and high-pressure X-ray powder diffraction acquisitions were done at the XPRESS diffraction beamline of the Elettra Synchrotron radiation facility located in Trieste (Italy) [29]. Data collection was performed by a monochromatic circular beam with a wavelength of 0.4957 Å and a diameter around 50 µm; pressure was applied from 0 to~7 GPa using a gear-driven Boehler-Almax plate diamond anvil cell (plate DAC) with a large X-ray aperture containing diamonds with a culet size of 500 µm.…”

Section: High-pressure Synchrotron X-ray Powder Diffraction (Hp-xrpd)mentioning

confidence: 99%

“…Energies 2020, 13, 1558 3 of 14 In this work the high-pressure structural properties of Sm-doped ceria were studied by analyzing X-ray diffraction patterns collected up to 7 GPa at the XPRESS diffraction beamline of the Elettra Synchrotron radiation facility [29]. The refined cell volumes were fitted to the Vinet equation of state (EoS) [30], and the obtained bulk moduli at zero pressure (B 0 ) were discussed in comparison to the ones obtained for Lu-doped ceria in a previous study [13].…”

Section: Introductionmentioning

confidence: 99%

In Situ High Pressure Structural Investigation of Sm-Doped Ceria

et al. 2020

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As a result of the lattice mismatch between the oxide itself and the substrate, the high-pressure structural properties of trivalent rare earth (RE)-doped ceria systems help to mimic the compressive/tensile strain in oxide thin films. The high-pressure structural features of Sm-doped ceria were studied by X-ray diffraction experiments performed on Ce1−xSmxO2−x/2 (x = 0.2, 0.3, 0.4, 0.5, 0.6) up to 7 GPa, and the cell volumes were fitted by the third order Vinet equation of state (EoS) at the different pressures obtained from Rietveld refinements. A linear decrease of the ln B 0 vs. ln ( 2 V a t ) trend occurred as expected, but the regression line was much steeper than predicted for oxides, most probably due to the effect of oxygen vacancies arising from charge compensation, which limits the increase of the mean atomic volume ( V a t ) vs. the Sm content. The presence of RE2O3-based cubic microdomains within the sample stiffens the whole structure, making it less compressible with increases in applied pressure. Results are discussed in comparison with ones previously obtained from Lu-doped ceria.

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“…The exposure time was 2 s per frame. Details concerning in situ synchrotron XRD measurements on single crystals by using a DAC at Xpress can be found elsewhere [20].…”

Section: In Situ Single-crystal X-ray Diffraction Under Vacuummentioning

confidence: 99%

An in-situ x-ray diffraction and infrared spectroscopic study of the dehydration of AlPO4-54

Fabbiani

Polisi

Fraisse

et al. 2020

Solid State Sciences

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The dehydration of the large pore aluminophosphate AlPO4-54•xH2O was studied in situ as a function of vacuum pressure at room temperature by infrared spectroscopy and x-ray diffraction. On polycrystalline samples, under primary vacuum, the adsorbed water is removed very rapidly. The structural water in the AlO6 octahedra is then removed slowly with the quantity of the fully dehydrated form gradually increasing from 43 to 65% of the total material. This results in a two-phase mixture of fully dehydrated and a distinct partially dehydrated AlPO4-54•1/2H2O phase containing structural water. These phases have almost identical a cell parameters and very close c parameters. Secondary vacuum increases the amount of fully dehydrated material to more than 76%. Prolonged heating under vacuum increases the amount of fully dehydrated material to 90%. On single crystal samples, removal of adsorbed water is slower and results in a reduction in crystal quality, however prolonged exposure to primary vacuum yielded fully dehydrated material without the need for heating. The monoclinic structure of anhydrous AlPO4-54, space group Cm, with a doubled unit cell was confirmed using single crystal synchrotron x-ray diffraction data. HIGHLIGHTS: Structural water in the Al octahedra is gradually removed as a function of vacuum pressure and time  In powder samples, an intermediate, partially dehydrated AlPO4-54•1/2H2O phase containing structural water is observed  The monoclinic Cm structure of anhydrous AlPO4-54 was confirmed by single crystal synchrotronx-ray diffraction.

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

Cited by 33 publications

References 39 publications

High‐Pressure Structural Investigation of Anomalous Hall Effect Compound Mn₃Sn up to 9 GPa

High‐Pressure Structural Investigation of Anomalous Hall Effect Compound Mn₃Sn up to 9 GPa

In Situ High Pressure Structural Investigation of Sm-Doped Ceria

An in-situ x-ray diffraction and infrared spectroscopic study of the dehydration of AlPO4-54

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

Cited by 33 publications

References 39 publications

High‐Pressure Structural Investigation of Anomalous Hall Effect Compound Mn3Sn up to 9 GPa

High‐Pressure Structural Investigation of Anomalous Hall Effect Compound Mn3Sn up to 9 GPa

In Situ High Pressure Structural Investigation of Sm-Doped Ceria

An in-situ x-ray diffraction and infrared spectroscopic study of the dehydration of AlPO4-54

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High‐Pressure Structural Investigation of Anomalous Hall Effect Compound Mn₃Sn up to 9 GPa

High‐Pressure Structural Investigation of Anomalous Hall Effect Compound Mn₃Sn up to 9 GPa