Results 121 to 130 of about 17,786 (291)

Synthesis and characterisation of new layered oxychalcogenide materials [PDF]

, 2004
Chapter one describes oxychalcogenide phases found in the literature with layered and three- dimensional structures. An attempt is made to systematise the structures of a range of materials to help understand their structural chemistry. Synthetic details
Withers, Neil D., Withers, Neil D
core  

Combined Rietveld and stereochemical restraint refinement of a protein crystal structure

, 1999
By combining high-resolution X-ray powder diffraction data and stereochemical restraints, Rietveld refinement of protein crystal structures has been shown to be feasible.
R. B. Von Dreele
core   +1 more source

Efficient Direct Recycling of Spent Batteries: Integrated Lithiation and Delamination

Advanced Science, EarlyView.
An integrated process for the delamination and relithiation of spent cathodes, LixNi0.6Co0.2Mn0.2O2 and LixFePO4, under open‐air conditions is proposed. The transition‐metal (Ni) oxidation state in the cathode is reduced by the oxidation of diethylene glycol, facilitating relithiation. Glycol aldehyde formation induces 100% electrode delamination.
Jeonghwan Song, Seok Hyun Song, Dokyeong Han, Jaehyun Noh, Jayoung Kim, Min Jeong Kim, Hayong Song, Jeong‐Sun Park, Jaekook Kim, Jiyoung Ma, Jinju Song, Jung‐Je Woo   +11 more
wiley   +1 more source

Crystal Properties 4SO2Influence of Doping on K

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017
Single crystals of pure and Cu+2,Fe+2 doped potassium sulfate were grown from aqueous solutions by the slow evaporation technique at room temperature. with dimension of (11x9 x4)mm3 and ( 10x 8x 5)mm3 for crystal doping with Cu &Fe respectively.
Tariq A.Al- Dahair, Maryam E.Al-Mahdawy
doaj  

Structural analysis and Rietveld refinement of YCr1-xFexO3 (x=0, 0.5) perovskite samples calcined at two different temperatures

Chemical Physics Impact
In the present work, we have synthesized polycrystalline YCr1-xFexO3 (x = 0, 0.5) perovskite samples using the traditional high-temperature solid-state reaction route (HT-SSRR) at two different temperatures for calcination (1000 °C as well as 1150 °C ...
Lakhan Kumar Parmar, Rupali Joshi, Priya Yadav, Tarun Garg, Ashok Kumar, Anand Yadav   +5 more
doaj   +1 more source

Pressure‐Driven Phase Transition Unlocking Unique Eu2+ Luminescence in Li2SrSiO4 for Optical Sensing and White‐LEDs

Advanced Science, EarlyView.
This study demonstrates, for the first time, the use of a large‐format high‐pressure press to modify synthesized Li2SrSiO4:Eu2+,Cs+ phosphors after its preparation. The pressure treatment results in the formation of new materials with distinctive optical properties, opening pathways for the development of advanced LED devices and high‐performance ...
Przemysław Woźny, Peng Du, Teng Zheng, Junpeng Xue, Liang Peng, Shuailing Ma, Szymon Sobczak, Victor Lavín, Tian Cui, Marcin Runowski   +9 more
wiley   +1 more source

Some aspects of the determination of retained austenite using the Rietveld refinement

, 2017
Purpose: The aim of the paper is to show the advantage of the application of the Rietveldrefinement for determination of retained austenite amount in multiphase microstructure steels.Design/methodology/approach: The steels used for the investigation were
M. Morawiec, A. Grajcar
core   +1 more source

Unusual Thermally Induced Blueshift and Emission Amplification of Mn2+ Ions Enable Filter‐Free Luminescent Thermal Imaging

Advanced Science, EarlyView.
ABSTRACT The shift from point‐based thermal sensing to filter‐free thermal imaging requires luminescent thermometers that exhibit pronounced and thermally driven spectral changes within spectral regions matching the sensitivity profiles of the red, green and blue (RGB) channels of a digital camera.
Y. Abe, M. Szymczak, J. Zeler, L. Marciniak   +3 more
wiley   +1 more source

Al─N Co‐Doped LLZO Solid Electrolytes via One‐Step Sintering: Toward High Ionic Conductivity

Advanced Science, EarlyView.
Al–N co‐doped LLZO solid electrolytes were prepared via a one‐step sintering process, which not only simplifies fabrication process, but also diminishes Li loss during high‐temperature sintering in conventional fabrication process. The Al–N co‐doped LLZO achieves a high ionic conductivity of 2.19 × 10−3 S cm−1 because the co‐doping reduces the energy ...
Hao Zhang, Yaocong Wang, Quande Che, Jiaming Wu, Yanzhu Zhang, Dongxu Mao, Xundao Liu, Jiajie Li, Zhengmao Ye, Dehua Dong   +9 more
wiley   +1 more source

The estimation of standard deviations in powder diffraction Rietveld refinements

, 1983
It is shown that when the observed and calculated intensities in a powder diffraction pattern differ because of model errors which affect the calculated integrated intensities, in addition to the random counting errors, Rietveld refinement with weights ...
H. G. Scott
core   +1 more source