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D8 discover a25

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The D8 Discover A25 is an X-ray diffractometer designed for materials analysis. It features a high-performance goniometer and a Lynxeye XE-T detector to collect diffraction data.

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Lab products found in correlation

Alpha 2, by Bruker (1 mentions) Topas software, by Bruker (1 mentions) Icp260, by Memmert (1 mentions) Axis supra spectrometer, by Shimadzu (1 mentions)

10 protocols using d8 discover a25

1

High-Pressure Synthesis and Neutron Diffraction of CdMn7O12

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Polycrystalline samples of CdMn7O12 were synthesized by high pressure method as described elsewhere11 (link).
Powder neutron diffraction (PND) measurements were performed at the D1B and D2B diffractometers at the Institut Laue-Langevin (ILL), France with a neutron wave length λ of 2.52 Å and 1.59 Å respectively. In order to reduce the absorption of neutrons by Cd nuclei, the CdMn7O12 powder was mixed with larger amount of Al powder and filled into the outer space of a hollow vanadium cylinder. This technique that we initially developed for SmFeO325 (link) enabled us to obtain excellent and fully evaluable neutron data of this highly neutron absorbing material (irrespective of the chosen neutron wavelength ~2.5 Å or ~1.6 Å). The PND patterns were analyzed by the Rietveld method using the Fullprof software.
In addition, temperature dependent x-ray diffraction (XRD) measurements were also performed on a Bruker D8 Discover A25 diffractometer using Cu radiation. A closed cycle helium cryostat (Phenix of Oxford Cryosystems) was used for cooling the flat plate powder sample.
Guo H., Fernández-Daz M.T., Zhou L., Yin Y., Long Y, & Komarek A.C. (2017). Non-collinear magnetic structure of manganese quadruple perovskite CdMn7O12. Scientific Reports, 7, 45939.
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2

Characterization of PGO-GS Hydrogels

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FT-IR spectroscopic measurements were performed using an infrared spectrometer (ALPHA II, BRUKER, Salbruken, GER). The hydrogel sample was placed in an oven (DGG-9140A; LINPIN, Shanghai, CHN) at 35 °C for 36 h to dehydrate it completely. Then, the sample was placed into an agate mortar and ground into powder by adding liquid nitrogen. Finally, the FT-IR spectrum of the sample was analyzed using the KBr method [44 (link)].
The diffraction patterns of PGO-GS hydrogels were detected by an X-ray diffractometer (D8 DISCOVER A25, BRUKER, Salbruken, GER) using Co K radiation. The range of 2θ was 5~90°. The scanning rate was 0.1°/s, and the scanning step was 0.02°.
Chen X., Zhang H., Cui J., Wang Y., Li M., Zhang J., Wang C., Liu Z, & Wei Q. (2023). Enhancing Conductivity and Self-Healing Properties of PVA/GEL/OSA Composite Hydrogels by GO/SWNTs for Electronic Skin. Gels, 9(2), 155.
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3

Characterization of Concrete Samples by XRD

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Raw materials (aggregates and cement) and hardened concrete samples were characterised by X-ray diffraction (XRD). Bruker D8 Discover A25 equipment with CuKα (λ = 1.54050 Ȧ; 40 Kv; 30 mA) was used. Diffraction patterns were measured between 10° and 70° (2θ) at a rate of 0.006 θ min−1. In hardened concrete samples, the XRD pattern was analysed at 28 days. The hardened samples were ground to a powder to obtain a representative sample. The samples were immersed in ethanol for the desired curing age for 48 h, in order to stop the hydration reactions of the cement at that age of study [20 (link),46 (link),47 (link)].
Merino-Lechuga A.M., González-Caro Á., Fernández-Ledesma E., Jiménez J.R., Fernández-Rodríguez J.M, & Suescum-Morales D. (2023). Accelerated Carbonation of Vibro-Compacted Porous Concrete for Eco-Friendly Precast Elements. Materials, 16(8), 2995.
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4

Wide-Angle X-Ray Scattering of Membranes

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The membranes were tested via wide-angle X-ray scattering (WAXS) at room temperature using a Bruker (Bruker, Billerica, MA, USA) D8 Discover A25 advanced diffractometer equipped with a Goebel mirror. The LynxEye detector was operated at a speed of 0.5 s with a step scanning mode ranging from 5° to 70° and a 2θ step of 0.020°. A Cu Kα (λ = 1.542 Å) radiation source in a ceramic tube was used.
Soto C., Torres-Cuevas E.S., González-Ortega A., Palacio L., Lozano Á.E., Freeman B.D., Prádanos P, & Hernández A. (2021). Gas Separation by Mixed Matrix Membranes with Porous Organic Polymer Inclusions within o-Hydroxypolyamides Containing m-Terphenyl Moieties. Polymers, 13(6), 931.
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5

Structural and Magnetic Analysis of LiFePO4

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The structural properties of LiFePO4 particles were analyzed by X-ray diffraction (XRD) by means of a Bruker D8 Discover A25 diffractometer (Bruker Española S.A., Madrid, Spain) using Cu Kα radiation, Ge monochromator, and a Lynxeye detector. The patterns were registered within the 10−80° (2θ) range, according to a 140 s. step time. The lattice cell parameters, the crystallite size and the amount of impurities present in the synthesized LiFePO4 were calculated using Topas software (Bruker Española S.A., Madrid, Spain) according to the full pattern matching method. The morphological properties of the samples were determined by means of a field-emission scanning electron microscope (FESEM) using a FEI-Nova Nano SEM 450 instrument (Izasa Scientific, Madrid, Spain). The presence of magnetite impurities in the synthesized LiFePO4 was verified by X-ray diffraction and also by our own-built electromagnet to confirm the magnetic behavior of the samples.
Ruiz-Jorge F., Benítez A., García-Jarana M.B., Sánchez-Oneto J., Portela J.R, & Martínez de la Ossa E.J. (2021). Effect of the Heating Rate to Prevent the Generation of Iron Oxides during the Hydrothermal Synthesis of LiFePO4. Nanomaterials, 11(9), 2412.
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6

Powder X-ray Diffraction Analysis

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Dry samples were ground in an agate mortar prior to XRD analysis. Powder XRD patterns were recorded for 2 hours using a Bruker D8 Discover A 25 equipped with a Cu Kα radiation source (λ = 1.5406 Å), a position-sensitive detector (2θ = 5–70°), and a silicon sample holder. Step size was 0.02°. Phase identification was performed using PCPDFWIN (version 2.2 June 2001 JCPDS).
Misbah M.H., Santos M., Quintanilla L., Günter C., Alonso M., Taubert A, & Rodríguez-Cabello J.C. (2017). Recombinant DNA technology and click chemistry: a powerful combination for generating a hybrid elastin-like-statherin hydrogel to control calcium phosphate mineralization. Beilstein Journal of Nanotechnology, 8, 772-783.
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7

X-ray Diffraction Analysis of Materials

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XRD assay was performed using a Bruker-D8-Discover-A25 diffractometer (Bruker AXS, Rheinfelden, Germany) equipped with a CuKα radiation (λ = 0.154 nm) operating at 40 kV and 30 mA. Prior to measurement, all samples were equilibrated to 15% humidity using an incubation chamber (Memmert ICP260, Schwabach, Germany) at saturated humidity and 15 °C. Diffractograms and crystallinity were obtained as described by Villanueva et al. [11 (link)], in the range of 5–40° (2θ) at a rate of 1.2°/min, a scan step size of 0.02°, a divergence slit width of 1°, and a scatter slit width of 2.92°.
Vicente A., Villanueva M., Caballero P.A., Muñoz J.M, & Ronda F. (2023). Microwave Modification of Quinoa Grains at Constant and Varying Water Content Modulates Changes in Structural and Physico-Chemical Properties of the Resulting Flours. Foods, 12(7), 1421.
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8

Materials Characterization via Advanced Techniques

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SEM images were acquired using a FEI Helio G4 CX microscope operated at 25 kV. TEM images were obtained on a FEI Themis Z TEM system with an accelerating voltage of 300 kV. N2 adsorption/desorption isotherms were measured on Quantachrome Autosorb‐1‐MP gas adsorption analyzer at 77 K after being degassed in vacuum at 200 °C for 10 h. The BET surface areas and pore size distributions were calculated by the Brunauer–Emmett–Teller equation and density functional theory method, respectively. A Bruker D8 DISCOVER A25 diffractometer with Cu Kα radiation (λ = 1.5418 Å) was used for collecting XRD patterns. Raman spectra were recorded on a Renishaw 1000 with a 633 nm laser. XPS analysis was performed on a Shimadzu AXIS Supra spectrometer with an Al Kα source (1486.7 eV). The real‐time temperatures and infrared images were recorded using a FLUKE Ti 10 infrared camera.
Chang P., Mei H., Zhao Y., Pan L., Zhang M., Wang X., Cheng L, & Zhang L. (2022). Nature‐Inspired 3D Spiral Grass Structured Graphene Quantum Dots/MXene Nanohybrids with Exceptional Photothermal‐Driven Pseudo‐Capacitance Improvement. Advanced Science, 9(30), 2204086.
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9

X-ray Diffraction Analysis of Crystallinity

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The diffraction assessment was proceeded using a Bruker-D8-Discover-A25 diffractometer (Bruker AXS, Rheinfelden, Germany) equipped with a copper tube operating at 40 kV and 40 mA, with CuKα radiation of 0.154-nm wavelength. Diffractograms of samples were obtained with scanning from 5° to 40°(2θ) at a rate of 1.2°/min, a step size of 0.02°, a divergence slit width variable of 5mm and a scatter slit width of 2.92° and a nickel filter 0.02 to exclude the Kβ radiation.
The crystallinity of samples was determined from diffractograms based on the relation between the global peaks area and the reduced peaks area assigned to the crystalline part of the sample, and expressed as a percentage. The "search-match" software DifracEVA with PDF2-2004 and COD database was used for this purpose.
Villanueva M., Joanna H.a.r.a.s.y.m., José María M.u.ñ.o.z, & Felicidad R.o.n.d.a. (2018). Microwave absorption capacity of rice flour. Impact of the radiation on rice flour microstructure, thermal and viscometric properties. Journal of Food Engineering., 224.
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10

X-Ray Diffraction Analysis of Crystalline Samples

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Samples were analysed using a Bruker D8 Discover A25 (Bruker AXS, Rheinfelden, Germany) equipped with a copper tube operating at 40 kV and 40 mA, producing CuKa radiation of 0.154 nm wavelength. Diffractograms were obtained by scanning from 5 º to 40 º (2theta) at a rate of 1.2 º/min, a step size of 0.02 º, a divergence slit width variable (DS) of 5 mm, a scatter slit width (SS) of 2.92 º and a nickel filter to exclude Kβ radiation.
Román L., Dura Á., Martínez M.M., Rosell C.M, & Gómez M. (2016). Combination of extrusion and cyclodextrin glucanotransferase treatment to modify wheat flours functionality. Food chemistry, 199.
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