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      Powder DiffractionRietveld refinementPattern analysis
A previously unknown leucite-related structure has been determined for synthetic CszCdSisO~2. NMR spectroscopy shows that there are five distinct tetrahedral sites (T-sites) occupied by Si and one T-site occupied by Cd in the framework... more
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    •   6  
      Analytical ChemistryNMR SpectroscopyMineral ChemistrySynchrotron Radiation
It is well known that the composition of ferromagnetic shape memory Ni-Mn-Ga Heusler alloys determines both temperature of martensitic transformations and the structure type of the product phase. In the present work we focused our... more
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    •   7  
      Materials EngineeringMechanical EngineeringRietveld refinementCrystal structure
ABSTFtACT The structure of lanthanum oxysulfate (La0)2S04 was studied with neutron, electron, and X-ray diffraction using the Rietveld refinement method. The unit cell is determined to be monoclinic (a = 14.349(l), b = 4.2852(5), c =... more
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    •   8  
      Materials EngineeringElectron DiffractionRietveld refinementCrystal structure
We report the synthesis of superparamagnetic nanoparticles of iron oxide in magnetite phase with diameters of approximately 15 nm. Nanoparticles of magnetite were synthesized by forced hydrolysis method, controlling the oxidation with a... more
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    •   18  
      EngineeringPhysicsMagnetic MaterialsNanoparticles
The orthorhombic to monoclinic phase transition in an high-titanium-loaded Ti-silicalite sample (2.6 wt.% in TiO 2 ) has been studied by means of temperature-dependent high resolution powder X-ray diraction data collected at the ESRF BM16... more
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    •   13  
      EngineeringTitaniumSynchrotron RadiationRietveld refinement
Polycrystalline gadolinium gallium mixed oxides were prepared by coprecipitation and annealing at various temperatures below 1000° C. The oxide materials appear to be X-ray amorphous after a heat treatment at 500° C for 30h, but after 30h... more
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    •   8  
      Inorganic ChemistryPowder DiffractionHeat TreatmentSolid State Chemistry
A comparative study of cellulose crystallinity based on the sample crystallinity and the cellulose content in plant fibres was performed for samples of different origin. Strong acid hydrolysis was found superior to agricultural fibre... more
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    •   7  
      Materials EngineeringRietveld refinementCelluloseCrystal structure
Rietveld refinement was performed for two samples prepared from natural pyrite (a polymorph of iron disulphide or iron persulphide, FeS 2 ) single crystals originating from Navajun (Spain) and from Ural Mts. (Russia). The present... more
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    •   16  
      Materials EngineeringCondensed Matter PhysicsPolymorphismPowder Diffraction
Texture correction of isostatically pressed molybdite powders has been carried out using the D1A high-resolution fixed wavelength 25-detector powder diffractometer at the Institut Laue-Langevin. All of the samples were spun during the... more
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      Condensed Matter PhysicsQuantum PhysicsPowder DiffractionNeutron Diffraction
Subsolidus phase relationships in the In2O3–WO3 system at 800–1400°C were investigated using X-ray diffraction. Two binary-oxide phases—In6WO12 and In2(WO4)3—were found to be stable over the range 800–1200°C. Heating the binary-oxide... more
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    •   7  
      Inorganic ChemistryPolymorphismSolid State ChemistryRietveld refinement
The crystal and magnetic structure of RCrO 4 oxides (R=Nd, Er and Tm) has been studied by owder neutron diffraction. These compounds crystallize with the zircon-type structure, showing tetragonal symmetry, space group I4 1 =amd: In the... more
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      Inorganic ChemistryPowder DiffractionSolid State ChemistryNeutron Diffraction
The orthorhombic to monoclinic phase transition in an high-titanium-loaded Ti-silicalite sample (2.6 wt.% in TiO 2 ) has been studied by means of temperature-dependent high resolution powder X-ray diraction data collected at the ESRF BM16... more
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    •   13  
      EngineeringTitaniumSynchrotron RadiationRietveld refinement
... by Rietveld refinement of neutron powder diffraction data Jens Wenzel Andreasen Æ Emil Makovicky Æ Bente Lebech Æ Sven Karup Møller ... (1974), Makovicky and Karup-Møller (1994) as well as Mössbauer studies by Vaughan and Burns... more
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    •   8  
      Materials EngineeringGeochemistryPowder DiffractionRietveld refinement
The influence of ionic substituents in calcium phosphates intended for bone and tooth replacement biomedical applications is an important research topic, owing to the essential roles played by trace elements in biological processes. The... more
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    •   24  
      HydroxyapatiteMultidisciplinaryRietveld refinementCarbonates
The location of extra-framework Ni 2 cations in the hydrated and dehydrated nickel ion-exchanged zeolite ferrierite was determined from the analysis of synchrotron X-ray powder diraction data. Rietveld re®nements were performed in the... more
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    •   8  
      EngineeringRietveld refinementNickelNi
This research investigates various methods able to identify possible mineralogical, physical and chemical influences on the grindability of commercial clinkers with high MgO level. The aim of the study is to evaluate the hardness and... more
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    •   10  
      Civil EngineeringTrace MetalsRietveld refinementBuilding
Multiferroic bismuth ferrite, BiFeO 3 , was synthesized via conventional solid-state reaction method using Bi 2 O 3 , Fe 2 O 3 as starting materials. Effects of Bi 2 O 3 /Fe 2 O 3 molar ratio and calcination temperature on the phase... more
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    •   7  
      Solid State PhysicsSynthesis of nanoparticlesRietveld refinementMultiferroics
The synthesis and crystal structure of Ce-doped CaMnO 3 perovskite has been investigated. Two powders with nominal compositions Ca 0.5 Ce 0.5 MnO 3 and CaMn 0.5 Ce 0.5 O 3 were prepared using a modified glycine/nitrate procedure. The... more
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    •   7  
      EngineeringRietveld refinementCrystal structureCeramics
For the first time, the 7M modulated structure, frequently observed in ferromagnetic shape memory Ni-Mn-Ga martensitic phases, is solved by powder diffraction analysis. Two polycrystalline samples with composition Ni 2 Mn 1.2 Ga 0.8 and... more
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    •   9  
      Materials EngineeringMechanical EngineeringPowder DiffractionRietveld refinement
Axel F. Cronstedt (1722-1765), famous Swedish mineralogist, was the first scientist to describe, 250 years ago, the distinctive property of zeolites, i.e., the unique frothing characteristics when heated in a blow-pipe flame. Cronstedt... more
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      EngineeringPowder DiffractionRietveld refinementMolecular Sieve
Within a development project for the characterization of sputtered thin films for phase change optical disks, amorphous and crystalline phases of Ge2Sb2Te5 (GST) and AgInSbTe (AIST) phase change materials have been investigated. Sputtered... more
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      Data AnalysisRietveld refinementCrystal structureX Rays
Using the Rietveld refinement, we analyze the structural evolution under thermal treatment of silica xerogel samples prepared by the sol–gel method with molar ratio (R) of water to TEOS of R = 5 and R = 11.66. We refine the structure of... more
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      EngineeringHeat TreatmentRietveld refinementSample Preparation
Cite this article as: Shidaling Matteppanavar, Basavaraj Angadi, Sudhindra Rayaprol, Low Temperature Magnetic Studies on PbFe 0.5 Nb 0.5 O 3 Multiferroic, Physica B, http://dx.
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    •   6  
      Condensed Matter PhysicsQuantum PhysicsMagnetic MaterialsNeutron Diffraction
"Rietveld Refinement for Beginners Ver x.doc" This is step by step procedure to perform Rietveld Refinement for first time users. The purpose is to help research scholars, scientists, students(UG/PG) to learn how to analyze x-ray... more
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      CrystallographyRietveld refinementX-ray Diffraction
The microstructure of Li 2 PtO 3 , isostructural with Li 2 MnO 3 , and ␤-Ni(OH) 2 is analyzed from powder diffraction data using two approaches. Firstly, the recently developed FAULTS program (a modification of the DIFFaX program to allow... more
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    •   8  
      EngineeringPowder DiffractionRietveld refinementPower
In this paper we present the structural, magnetic and dielectric properties of ceramic nickel manganite NiMn 2 O 4+δ produced by using nickel permanganate Ni(MnO 4 ) 2 xH 2 O as a precursor. We have characterized the NiMn 2 O 4+δ... more
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    •   15  
      Materials EngineeringImpedance SpectroscopyRietveld refinementX Rays
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... more
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      Civil EngineeringRietveld refinementBuildingPilot study
Two different binders composed of Portland cement, calcium sulphoaluminate clinker and calcium sulphate were studied from early hydration to 28 days, one containing gypsum and one containing anhydrite at equimolar CaSO 4 amount. Sodium... more
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      Civil EngineeringThermodynamicsKineticsScanning Electron Microscopy
Rietveld refinement of powder diffraction data is a very popular and powerful technique. Several effects in the diffraction patterns, such as anisotropic peak broadening, preferred orientation or extinction, are properly taken into... more
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      EngineeringRietveld refinementMathematical SciencesPhysical sciences
The first examples of compounds containing the [SnR2I3] anion, i.e. [Bun4N][SnR2I3] (R = Me or Ph), have been prepared and characterized by IR, Raman and 119Sn Mössbauer spectroscopies, and X-ray powder diffraction data. The... more
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      Rietveld refinementXRD Crystallography
The identity of the pyrochlore phase seen during the synthesis of ferroelectric Bi 4Àx Ln x Ti 3 O 12 Aurivillius oxides is shown to be Bi 2/3 Ln 4/3 Ti 2 O 7 . This pyrochlore is only stable for Ln 3+ ¼ Sm 3+ or smaller. For larger... more
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      Inorganic ChemistryTitaniumSolid State ChemistryRietveld refinement
Cobalt-doped willemite is a promising blue ceramic pigment, but some important aspects concerning crystal structure, optical properties and technological behaviour are still undisclosed. In order to get new insight on these features,... more
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    •   9  
      Materials EngineeringElectron MicroscopySpectroscopyRietveld refinement
Occupation of Fe in ZnO structure X-ray diffraction Mössbauer spectroscopy UV-Vis diffuse reflectance spectroscopy A B S T R A C T A series of Fe-doped ZnO (Zn 1-x Fe x O, x = 0, 0.01, 0.03, 0.05, 0.07 and 0.10) samples were synthesized... more
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    •   4  
      Mössbauer SpectroscopyRietveld refinementPhotocatalysisSolution Combustion Synthesis
O 3 multilayers were fabricated by pulsed-laser deposition and studied by structural, magnetic, and electric characterization techniques. Transmission electron microscopy and x-ray diffractometry proved the excellent structural quality of... more
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    •   43  
      EngineeringMaterials EngineeringMathematical PhysicsCondensed Matter Physics
In this work, we report the Rietveld refinement, microstructure, conductivity and impedance properties of Ba[Zr0.25Ti0.75]O3 ceramic synthesized by solid state reaction. This ceramic was characterized by X-ray diffraction, Rietveld... more
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    •   16  
      Scanning Electron MicroscopyImpedance SpectroscopyRietveld refinementMathematical Sciences
A detailed investigation of the phase relations in the Ti-Si-B system involving as-cast and heat-treated samples that were characterized via X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Wavelength Dispersive... more
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      Materials EngineeringScanning Electron MicroscopyTitaniumIntermetallics
Nanocrystalline NaNbO 3 and NaTaO 3 have been synthesized by the reverse micellar technique for the first time. The particle size of NaNbO 3 was found to be 18 nm while that of NaTaO 3 was found to be 40 nm (much smaller size than most of... more
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      Condensed Matter PhysicsInorganic ChemistryElectron MicroscopyRaman Spectroscopy
A series of crystalline Gd-W oxides, with Gd: W ratios spanning the values 0.1-3.5, has been prepared and treated with a flow of NH, (g) in the temperature range 700-1100 °C. Besides the previously reported formation of GdWO3N and... more
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    •   11  
      Materials EngineeringCondensed Matter PhysicsMaterials ChemistryElectron Diffraction
The relationship between yttria concentration and the unit cell parameters in partially and fully stabilized zirconia has been reassessed, motivated by the need to improve the accuracy of phase analysis upon decomposition of t'-based... more
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    •   9  
      Materials EngineeringMechanical EngineeringRietveld refinementThe
Hydrogen production is an immediate need to replace the fossil fuels to keep environmental balance, and water splitting is an effective solution in presence of catalyst through oxygen evolution reaction (OER) and hydrogen evolution... more
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      Chemical EngineeringAnalytical ChemistryRenewable EnergyElectrochemistry
The electrocatalytic oxygen evolution reaction (OER) on iron based perovskites with composition La1−xCaxFeO3−δ (0.0 ≤ x ≤ 1.0) in alkaline solution has been investigated. The perovskite samples were synthesized by combustion method.... more
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    •   5  
      Rietveld refinementPerovskitesOxidation StateWater Electrolysis
Bulk samples of spinel ferrites with the compositional formula, Co 1 À x Ni x Fe 2 O 4 (x ¼0.0, 0.5, 1.0) were synthesized by a solid-state reaction route to discuss doping effect on the structural, vibrational and dielectric properties.... more
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    •   4  
      Rietveld refinementStructural AnalysisMultiferroicsSpinel Ferrite
The correlation between the crystal structure and luminescent properties of Eu 3 þ -doped metal tungstate phosphors for white LEDs was investigated. Red-emitting A 4À 3x (WO 4 ) 2 :Eu x 3 þ (A¼ Li, Na, K) and B (4À 3x)/2 (WO 4 ) 2 :Eu x 3... more
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    •   9  
      Rietveld refinementCrystal structureLuminescenceOptical physics
Phase transformation in cement during hydration is studied by XRD, FTIR and Mössbauer. The hydration process was monitored by self consistent analysis of the XRD results. Alite and belite phases control the early setting time of cement.... more
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      Phase TransformationsMössbauer SpectroscopyRietveld refinementCement and Concrete Materials
Iron oxide nano-particles are synthesized from aqueous iron (III) nitrate solution through citric acid and ethy-lene glycol assisted modified Pechini route. Synthesized particles are calcined at 400 and 600 C in air to achieve better... more
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      Sensors and SensingMaterials Science and EngineeringRietveld refinementGas Sensors
A directional freezing method was used to obtain In 2 Se 3 crystals. Rietveld refinement of the diffraction data was performed. The Raman spectra of the ␣-phase of In 2 Se 3 were measured with polarized light in different configurations... more
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      Materials EngineeringRaman SpectroscopyRietveld refinementLattice Dynamics
The structural, infrared absorption and magnetic property transformations in nanocrystalline Mn 0.5 Zn 0.5 Fe 2 O 4 samples irradiated with different doses (0, 15, 25 and 50 kGy) of γ-irradiation were investigated in this work and a... more
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    •   4  
      Magnetic MaterialsGamma RaysRietveld refinementFerrite
CaTiO 3 powders were synthesized using both a polymeric precursor method (CT ref ) and a microwave-assisted hydrothermal (CT HTMW ) method in order to compare the chemical and physical properties of the perovskite-based material as a... more
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    •   13  
      Materials EngineeringMechanical EngineeringRaman SpectroscopyRietveld refinement
Structure refinement of LaVO 3 was carried out using the whole pattern fitting or Rietveld method, which is a powerful technique for extracting structural information from powder diffraction data. The crystal structure refinement was done... more
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    •   9  
      EngineeringPowder DiffractionRietveld refinementCrystal structure