Results 51 to 60 of about 42,195 (291)

Rietveld Refinement for Macromolecular Powder Diffraction

Crystal Growth & Design, 2020
Powder X-ray diffraction (PXRD) has been employed extensively for the structural characterization of materials, quantitative analysis of multicomponent mixtures, phase identification, texture, and ...
Maria Spiliopoulou, Dimitris-Panagiotis Triandafillidis, Alexandros Valmas, Christos Kosinas, Andrew N. Fitch, Robert B. Von Dreele, Irene Margiolaki   +6 more
openaire   +2 more sources

Production of MgO/TiC Composites From MgO‐C Recyclates Using Spark Plasma Sintering

Advanced Engineering Materials, EarlyView.
Using the spark plasma sintering technique, MgO/TiC composites are manufactured from recycled MgO‐C refractories stemming from the steel production that were mixed with titanium powder. This article shows, how the size of the Ti grains and their distribution in the powder mixture affect the local carbon concentration in TiC.
Jiayan Yu, Christian Schimpf, Stefan Martin, David Rafaja   +3 more
wiley   +1 more source

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

Advanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho, M. Naeem, T. H. C. Costa, M. S. Libório, J. C. A. Queiroz, C. B. B. Luna, R. R. M. Sousa, P. S. Vieira, E. M. Araújo   +8 more
wiley   +1 more source

Crystallographic characterization of naturally occurring aragonite and calcite phase: Rietveld refinement

Journal of Saudi Chemical Society, 2023
This research has comprehended the crystallographic characterization of two naturally occurring calcium carbonates phases e.g. aragonite and calcite in Pila globosa (P. globosa) and eggshells respectively.
Md. Sahadat Hossain, Samina Ahmed
doaj   +1 more source

Evidence for $M_B$ and $M_C$ phases in the morphotropic phase boundary region of $(1-x)[Pb(Mg_{1/3}Nb_{2/3})O_3]-xPbTiO_3$ : A Rietveld study

, 2002
We present here the results of the room temperature dielectric constant measurements and Rietveld analysis of the powder x-ray diffraction data on $(1-x)[Pb(Mg_{1/3}Nb_{2/3})O_3]-xPbTiO_3$(PMN-$x$PT) in the composition range $0.20 \leq x \leq 0.45$ to ...
A.K. Singh, A.M. Glazer, Akhilesh Kumar Singh, B. Noheda, B. Noheda, B. Noheda, B. Noheda, D. La-Orauttapong, D. Pandey, D. Vanderbilt, D. Viehland, D.L. Corker, D.M. Hatch, Dhananjai Pandey, G. Xu, H. Fu, H.C. Wang, H.D. Megaw, I.A. Sergienko, J. Kelly, J.M. Kiat, K. Kakegawa, K. Ohwada, L. Bellaiche, L. Bellaiche, M.K. Derbin, N. Lampis, O. Bouquin, P.W. Stephens, R. Guo, R. Ranjan, Ragini, Ragini, S.-E. Park, S.K. Mishra, S.K. Mishra, S.K. Mishra, S.L. Swartz, S.L. Swartz, Y. Lu, Z.-G. Ye   +40 more
core   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu, Giovanni Gammaitoni, Michael Häfner, Eduardo Villalobos‐Portillo, Carlo Marini, Matteo Bianchini   +5 more
wiley   +1 more source

Modulated structure in the martensite phase of Ni1.8Pt0.2MnGa: a neutron diffraction study

, 2012
7M orthorhombic modulated structure in the martensite phase of Ni1.8Pt0.2MnGa is reported by powder neutron diffraction study, which indicates that it is likely to exhibit magnetic field induced strain. The change in the unit cell volume is less than 0.5%
Awasthi, A. M., Barman, S. R., Bhardwaj, S., Rajput, P., Singh, Sanjay, Suard, E., Ziebeck, K. R. A.   +6 more
core   +1 more source

Synthesis and characterization of a novel Y-Fe phase via kinetic neutron diffraction [PDF]

, 2001
Kinetic in situ neutron diffraction has been used to study the crystallization of amorphous Y67Fe33. The results show that partial crystallization first occurs close to 300 ◦C where the Y phase is formed.
Kilcoyne, SH, Manuel, P, Ritter, C
core   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

Premartensite to martensite transition and its implications on the origin of modulation in Ni2MnGa ferromagnetic shape memory alloy

, 2015
We present here results of temperature dependent high resolution synchrotron x-ray powder diffraction study of sequence of phase transitions in Ni2MnGa.
Barman, S. R., Bednarcik, J., Felser, C., Pandey, Dhananjai, Singh, Sanjay   +4 more
core   +1 more source