Results 71 to 80 of about 17,786 (291)

Synthesis and Rietveld crystal structure refinement of mackinawite, tetragonal FeS

, 1995
Mackinawite,tetragonal FeS, has been synthesised by reacting iron with Na2S solutions. A Rietveld structure refinement of X-ray powder diffractipn data, recorded using X-rays monochromated from synchrotron radiationwith a wavelength of 0.6023 A, has been
S. A. T. Redfernt, Lennie, Alistair R., Schofield, Paul F., A. R. Lennie, Redfern, Simon A. T., P. F. Schoaeld, D. J. V Aughan, Vaughan, David J.   +7 more
core   +1 more source

Bayesian‐Optimized Dual‐Mode Luminescence‐Based Optical Thermometry Enabled by Negative Thermal Expansion in Lu2(MoO4)3:Yb–Er–Tm Phosphor

Advanced Optical Materials, EarlyView.
A Bayesian optimization framework identifies the ideal composition for Lu2(MoO4)3:Yb–Er–Tm phosphors with minimal experimental trials. By leveraging the host's negative thermal expansion, the material achieves remarkable thermal quenching compensation.
Reiko Furukawa, Takuya Hasegawa, Tong Fang, Saneyuki Ohno, Tomoyo Goto, Yasushi Sato, Ayahisa Okawa, Shu Yin   +7 more
wiley   +1 more source

Microscale Mapping of Fiber Strain and Damage in Composite Wrinkled Laminates Using Computed Tomography Assisted Wide‐Angle X‐Ray Scattering

Advanced Science, EarlyView.
This study combines full‐field tomography with diffraction mapping to quantify radial (ε002$\varepsilon _{002}$) and axial (ε100$\varepsilon _{100}$) lattice strain in wrinkled carbon‐fiber specimens for the first time. Radial microstrain gradients (−14.5 µεMPa$\varepsilon \mathrm{MPa}$−1) are found to signal damage‐prone zones ahead of failure, which ...
Hoang Minh Luong, James Trevarthen, Igor Dolbnya, Wadwan Singhapong, Nicholas Pilato, Richard Butler, Jiraphant Srisuriyachot, Alexander J. G. Lunt   +7 more
wiley   +1 more source

Understanding anisotropic microstrain broadening in Rietveld refinement

, 2011
Anisotropic, i.e. hkl-dependent microstrain broadening of Bragg peaks as observed in powder-diffraction measurements often obstructs finding a good description of the peak profiles during Rietveld refinement.
Andreas Leineweber, Leineweber, A.
core   +1 more source

Tunable Negative Thermal Expansion in Fe/Cr‐Substituted Nd2Co17 Compounds via Magnetoelastic Coupling

Advanced Science, EarlyView.
This study achieves anisotropic thermal expansion tuning in Nd2(Co1‐xFex)17‐yCry compounds via a magnetoelastic strategy. Variable‐temperature synchrotron X‐ray diffraction reveals that increased Fe content induces switchable lattice responses. Compositional control reduces the volume expansion coefficient αV by 20% (x═0.7) and modulates TC (442–625 K),
Jiayuan Li, Chenfei Qv, Haoran Tu, Qinfen Gu, Wayne D. Hutchison, Stewart J. Campbell, Zhenxiang Cheng, Wenquan Wang, Jianli Wang   +8 more
wiley   +1 more source

Spotlight: efficient automated global optimization in rietveld analysis of diffraction data

Scientific Reports
Performing reliable Rietveld analysis on tens or hundreds of powder diffraction datasets from parametric or time-resolved experiments often poses a bottleneck in extracting meaningful results from the data.
C. M. Biwer, Z. Feng, D. Finstad, M. McDonnell, M. Knezevic, M. McKerns, D. J. Savage, S. C. Vogel   +7 more
doaj   +1 more source

Identification of the chemical state of Fe in barium hexaaluminate using Rietveld refinement and 57Fe Mouml;ssbauer spectroscopy

, 2011
Identification of the chemical state of Fe in barium hexaaluminate using Rietveld refinement and 57Fe Mouml;ssbauer ...
朱燕燕, 张涛, 王军虎, 吴国涛, 王晓东, 王爱琴   +5 more
core  

Caracterização e estudos das propriedades no estado sólido do cloridrato de venlafaxina [PDF]

, 2013
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Programa de Pós-Graduação em Farmácia, Florianópolis, 2013.O cloridrato de venlafaxina (VEN) é um inibidor da recaptação da serotonina e norepinefrina eficaz no ...
Bernardi, Larissa Sakis
core  

Revised structural phase diagram of (Ba0.7Ca0.3TiO3)-(BaZr0.2Ti0.8O3) [PDF]

, 2013
The temperature-composition phase diagram of barium calcium titanate zirconate (x(Ba0.7Ca0.3TiO3)(1-x)(BaZr0.2Ti0.8O3); BCTZ) has been reinvestigated using high-resolution synchrotron x-ray powder diffraction.
Pam A. Thomas, Kreisel, J. (Jens), Dean S. Keeble, Thomas, Pam A., Jens Kreisel, Keeble, Dean Samuel, Benabdallah, Feres, Feres Benabdallah, Mario Maglione, KREISEL, Jens, Maglione, Mario, KEEBLE, Dean S., Mario, Maglione   +12 more
core   +1 more source

New High‐Tc Charge‐Transfer Multiferroicity in the Quasi‐2D Antiferromagnet CrSbS3

Advanced Science, EarlyView.
ABSTRACT Low‐dimensional magnets, particularly 2D systems, offer a rich platform for realizing unconventional multiferroic mechanisms, especially when multiple polarization channels coexist. In the quasi‐2D antiferromagnet CrSbS3, which crystallizes in the centrosymmetric orthorhombic space group Pnma and orders magnetically at TN ≈ 90 K, two ...
Hung‐Cheng Wu, Yu‐Hsin Liao, Chih‐Chung Tsai, Pei‐Ying Yang, Yu‐Hao Chang, Yu‐Hui Liang, D. Chandrasekhar Kakarla, Ajay Tiwari, C. Dhanasekhar, Chin‐Wei Wang, Daisuke Okuyama, Chia‐Nung Kuo, Chin‐Shan Lue, Tzu‐Hsuan Weng, Kung‐Hsuan Lin, Jau‐Wern Chiou, Chi‐Hung Lee, Hung‐Duen Yang   +17 more
wiley   +1 more source