Results 71 to 80 of about 42,195 (291)

Rietveld refinement of a natural cobaltian mansfieldite from synchrotron data

Acta Crystallographica Section E, 2009
A structural refinement of a natural sample of a Co-bearing mansfieldite, AlAsO4·2H2O [aluminium orthoarsenate(V) dihydrate], has been performed based on synchrotron powder diffraction data, with 5% of the octahedral Al sites replaced by Co ...
Giovanni Pratesi, Matteo Zoppi
doaj   +1 more source

Rietveld and Impedance Analysis of Cold and Hot Rolled Duplex and Lean Duplex Steels for Application in Paper and Pulp Industry [PDF]

Materials Research, 2016
In this study, X-Ray Diffraction (XRD) and Rietveld Refinement were performed to identify and quantify the ferrite and austenite phase of cold and hot rolled duplex stainless steels (UNS S31803) and lean duplex stainless steels (UNS S32304 ...
Luiza Esteves, Paulo Renato Perdigão Paiva, Adolfo Kalergis do Nascimento Viana, Vanessa de Freitas Cunha Lins   +3 more
doaj   +2 more sources

Constructing Ionic Fast Diffusion Channels on LiNi0.5Mn1.5O4 for Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
A dual‐modification strategy is developed for LNMO cathode, where bulk Ti doping stabilizes the oxygen framework and simultaneously drives the in situ formation of LaTi2O6 nano‐islands as ion diffusion channels on (111) surfaces, enabling high‐rate capacity (∼100 mAh g−1 at 30 C) and excellent cycling retention (87.8% after 1000 cycles).
Xinyi Zhang, Sicheng Wu, Xuzhao Liu, Haocheng Guo, Jian Peng, Xia Huang, Xiaobo Zhu, Yuhui Ge, Haochen Lu, Shuhao Wang, Lianzhou Wang   +10 more
wiley   +1 more source

Juxtaposition of Spin Freezing and Long Range Order in a Series of Geometrically Frustrated Antiferromagnetic Gadolinium Garnets

, 2013
Specific heat measurements in zero magnetic field are presented on a homologous series of geometrically frustrated, antiferromagnetic, Heisenberg garnet systems. Measurements of Gd3Ga5O12, grown with isotopically pure Gd, agree well with previous results
A. Gomez, G. Balakrishnan, H. A. Craig, J. A. Quilliam, J. B. Kycia, J. Overmeyer, L. R. Corruccini, M. J. P. Gingras, O. A. Petrenko, S. Cotton, S. Meng, S. W. Kycia, W. Borchardt-Ott, W. P. Wolf   +13 more
core   +1 more source

Pressing the Limits of Rietveld Refinement [PDF]

Australian Journal of Physics, 1988
Two examples are given, one with X-ray data and one with netltron data, of the determination of structural detail which appear to be at the edge of current possibility for the Rietveld structure-refinement method. In the first example, 2·2 wt% Sb substituted in CalO(P04)6F2 was located.
openaire   +1 more source

Toward Stable Multivalent Metal Batteries: Understanding the Interfacial Chemistry for Magnesium and Calcium Metal Anodes

Advanced Functional Materials, EarlyView.
Interphase chemistry governs the stability of multivalent metal batteries. We summarize state‐of‐the‐art developments in calcium and magnesium metal batteries by focusing on the correlation among electrolytes, interphase layers, and the electrochemical performance of corresponding metal anodes.
Huijun Lin, Qi Meng, Juncai Long, Chuheng Cao, Zheng‐Long Xu   +4 more
wiley   +1 more source

Analysis of Rietveld Method Application for Gyrolite Crystal Structure Refinement

Medžiagotyra, 2012
The several simulated X-ray diffraction patterns for calcium silicate hydrate – gyrolite were calculated with GSAS program using the structural model of natural mineral gyrolite and profile parameters values determined from refining crystal structure of ...
Arūnas BALTUŠNIKAS, Irena LUKOŠIŪTĖ, Rimantas LEVINSKAS, Albertas GRYBĖNAS, Kęstutis BALTAKYS, Anatolijus EISINAS   +5 more
doaj   +1 more source

Investigation of Halogen Substitution Effects in π‐Conjugated Organic Ligands of Chiral Hybrid Perovskites on Their Chiroptical Activity

Advanced Functional Materials, EarlyView.
The role of novel thiophene‐based ligands with halogen substitutions in enhancing the chiroptical and optoelectronic properties of 2D chiral HOIPs has been investigated. By tailoring ligand design, enhanced CD and CPL properties are achieved, with improved CPL discrimination in photodetectors.
Boesung Kwon, Doyeong Yeo, In‐Chul Hwang, In Hwan Jung, Joon Hak Oh   +4 more
wiley   +1 more source

Mineralogical study of phosphate rocks by quantitative rietveld refinement

Open Ceramics
Phosphorites from the Kodjari deposits of Burkina Faso are composite rocks with a fine-grained matrix phase and dispersed larger grains. Chemical analysis by XRF revealed a CaO content of 35.98–41.33 wt% and a P2O5 content of 26.85–30.75 wt%.
Jean-Baptiste Zoungrana, Brahima Sorgho, Corneille Bakouan, Saga Sawadogo, Regie Dimanche Ouedraogo, Boubié Guel, Philippe Blanchart   +6 more
doaj   +1 more source

RIETVELD TEXTURE REFINEMENT ANALYSIS OF LINDE TYPE A ZEOLITE FROM X-RAY DIFFRACTION DATA [PDF]

Journal of Engineering Science and Technology, 2018
Rietveld method was used to conduct a texture refinement analysis for Linde type A zeolite prepared by hydrothermal conditions of 100 ºC for 4 h. Material Analysis Using Diffraction software, which is an open access/user-friendly software, was used to ...
SAMA M. AL-JUBOURI, BASMA I. WAISI, STUART M. HOLMES   +2 more
doaj