Publications related to Scherrer equation

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The phenomenological theory of martensite crystallography (PTMC) explains the habit planes of bi-variant laminate martensite product and the transformation twins between the variants. It also permits to determine whether or not the austenite and martensite lattice parameters satisfy supercompatibility by three mathematical equations called “cofactor conditions”. The PTMC calculations are in great part based on mathematical tools of continuum mechanics (polar decompositions and stretch tensors). Here, we pro

The evolution of electronic transport under external tuning is a key aspect of quantum materials research. This thesis investigates how resistivity and related transport properties are governed by structural, electronic, and magnetic interactions, using layered pnictide compounds as a unified platform. Despite similar crystallographic frameworks, the selected materials (BaNi2P2, BaMn2P2, and EuIn2P2) exhibit distinct ground states, enabling a comparative study of how pressure and magnetic field affect super

We use complementary optical spectroscopy methods to directly measure the lowest crystal-field energies of the rare-earth quantum magnet LiY

_{1-x}

_{x}

_{4}

, including their hyperfine splittings, with more than 10 times higher resolution than previous work. We are able to observe energy level splittings due to the

^6\mathrm{Li}

and

^7\mathrm{Li}

isotopes, as well as non-equidistantly spaced hyperfine transitions originating from dipolar and quadrupolar hyperfine interactions. We provide refined c

Hardened cement paste in concrete wastes can be a valuable precursor material for the production of recycled cements. In the reported study, X-ray diffraction data of cementitious materials obtained by thermal processing of hardened pastes were quantitativ ...

In this paper, we present a study of the structural and optical properties of organic-inorganic halide-based perovskite semiconductors with band gaps varying from NIR to visible at room temperature. Thin films of nanocrystalline CH3NH3PbI3 with different c ...

Laue's experiment in 1912 of the diffraction of X-rays by crystals led to one of the most influential discoveries in the history of science: the first determinations of crystal structures, NaCl and diamond in particular, by W. L. Bragg in 1913. For the fir ...

Optimized synthesis of Ti-precursor 'titanylnitrate' for one step combustion synthesis of N- and C-doped TiO2 catalysts were reported and characterized by using powder X-ray diffraction (XRD), transmission electron microscopy (TEM), diffused reflectance UV ...

The catalytic action of Mo2N and Au/Mo2N has been assessed in the selective gas phase hydrogenation of p-chloronitrobenzene (p-CNB) to p-chloroaniline (p-CAN). The nitrides were synthesised via temperature programmed treatment of MoO3 in H-2 + N-2 and Au introduced by deposition-precipitation with urea. We have examined the influence of nitride crystallographic phase (tetragonal beta-Mo2N vs. cubic gamma-Mo2N) and surface area (7-66 m(2) g(-1)) on the catalytic response. Catalyst activation by temperature p

Graphene, an atomically thin sheet of carbon, is the most recent endeavor for the application of carbon nanostructures in conventional electronics. The envisioned creation of devices completely carved out of graphene could lead to the revolution of electro ...

Lutetium and yttrium oxides are promising scintillating materials suitable for use in medical planar X-ray imaging and mammography. In this paper the procedure for preparation of europium doped mixed lutetium-yttrium oxide nanopowders using polymer complex solution synthesis method is presented. Detailed information on nanopowder phase, morphology and crystallinity are obtained using X-ray powder diffraction. SEM and TEM while optical properties are investigated by photoluminescence and radioluminescence me

e report an investigation concerning the influence of ion bombardment on the nanostructure and physical properties of Zr–Si–N nanocomposite thin films. The films were deposited by reactive magnetron sputtering from individual Zr and Si targets. The Si cont ...

X-ray diffraction (XRD) is a powerful technique for the study of crystalline materials. The technique of Rietveld refinement now enables the amounts of different phases in anhydrous cementitious materials to be determined to a good degree of precision. This paper describes the extension of this technique to a pilot study of the hydration of a typical Portland cement. To validate this XRD-Rietveld analysis technique, its results were compared with independent measures of the same materials by the analysis of

In the search for a good dimensionally stable anode-type electrode, p-silicon (1-3 mW cm) has been chosen as the substrate material due to its high anodic stability and its reasonable cost compared to titanium and tantalum. Several p-Si/IrO2 electrodes have been prepd. by thermal decompn. at different temp. The effect of prepn. temp. on the morphol. and electrochem. properties has been investigated by SEM anal., X-ray diffraction, and cyclic voltammetry in 1 M HClO4 showing that p-Si/IrO2 prepd. at 450 DegC

NADA is a computer program for the simultaneous refinement of the components of the orientation matrix and the components of up to three modulation vectors by the method of least squares. Using the spatial peak positions and the orientation matrix of the main reflections from a single-crystal diffraction experiment and rough estimates of the modulation vector(s) components, NADA re-indexes the peaks (main and satellite reflections) with integers in higher dimensions (hklm(1), hklm(1)m(2) or hklm(1)m(2)m(3),

Microcrystalline hydrogenated silicon films (muc-Si:H) have been deposited by a high current DC plasma in argon-silane-hydrogen mixtures at growth rates up to 10 nm/s and at substrate temperatures below 500 degreesC. Scanning electron microscopy, X-ray diffraction and FTIR analyses show that these films are highly crystallized. The surface morphology depends strongly on the experimental conditions and varies from a cauliflower structure to a prismatic one. The crystalline orientation of the films also chang

Scherrer equation

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Compatibilities and supercompatibility conditions in shape memory alloys determined from correspondence, metrics and symmetries

Pressure-tuned transport and magnetic scattering in layered pnictides: BaNi2P2, BaMn2P2, and EuIn2P2

Precise determination of low energy electronuclear Hamiltonian for LiY$_{1-x}$Ho$_{x}$F$_{4}$

Recycling of hydrated cement pastes by synthesis of alpha'(H)-C2S

Band-gap tuning of lead halide perovskite using a single step spin-coating deposition process

'Seeing' Atoms: The Crystallographic Revolution

Combustion synthesized TiO2 for enhanced photocatalytic activity under the direct sunlight-optimization of titanylnitrate synthesis

Effect of Crystallographic Phase (β vs. γ) and Surface Area on Gas Phase Nitroarene Hydrogenation Over Mo2N and Au/Mo2N

Electrical Properties of Chemically Derived Graphene

Preparation, structural and spectroscopic studies of (YxLu1-x)(2)O-3:Eu3+ nanopowders

Influence of bias voltage on the microstructure and physical properties of magnetron sputtered Zr–Si–N nanocomposite thin films

Quantitative study of Portland cement hydration by X-ray diffraction/Rietveld analysis and independent methods

Dimensionally Stable Anode-Type Anode Based on Conductive p-Silicon Substrate

NADA - a computer program for the simultaneous refinement of orientation matrix and modulation vector(s)

Rapid deposition of hydrogenated microcrystalline silicon by a high current DC discharge