Results 61 to 70 of about 11,020,427 (276)
Estudo estrutural e térmico da liga Ni46Ti54 [PDF]
, 2005 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias Fisicas e Matematicas. Programa de Pós-Graduação em FísicaAs propriedades estruturais e térmicas da liga amorfa de composição nominal Ni46Ti54 produzida pela técnica de ...
Gasperini, Antonio Augusto Malfatti
core
3D‐Printed Dual‐Doped Ag2Se‐Based Thermoelectric Films With Enhanced Thermal Stability
Advanced Materials Technologies, EarlyView.Sb–Se dual doping enhances the thermal stability of Ag2Se‐based thermoelectric systems. The compositionally tuned nano‐ink is printed into flexible films by direct ink writing (DIW), retaining improved thermoelectric properties after annealing up to 400°C.
Ahasun Habib Hridoy +8 more
wiley +1 more source
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 +7 more
wiley +1 more source
Química Nova, 2007 A sample of hydroxyapatite was synthesized and its crystalline structure was analyzed by X-ray diffraction by means of the Rietveld method. Two functions were used to fit the peak profiles, modified Voigt (TCHZ) and Pearson VII.
Jorge Correa de Araújo +3 more
doaj +1 more source
Rietveld Method Applied for Triacylglycerol Polymorphism Analysis [PDF]
Acta Crystallographica Section A Foundations and Advances, 2014 The characterization of the fat components becomes very useful in the formulation of shortening, margarines and fatty products due to their unique properties of plasticity, texture, solubility and aeration. The qualitative analysis obtained by X-ray diffraction (XRD) can be further improved in order to fulfill the lack of information on the ...
Guilherme Calligaris +3 more
openaire +1 more source
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 +8 more
wiley +1 more source
Crystal Structure Refinement of Synthetic Pure Gyrolite
Medžiagotyra, 2015 Pure calcium silicate hydrate – gyrolite was prepared under the saturated steam pressure at 473 K temperature in rotating autoclave. The crystal structure of synthetic gyrolite was investigated by X-ray diffraction and refined using Le Bail, Rietveld and
Arūnas Baltušnikas +5 more
doaj +1 more source
Applications of Rietveld Method in Inorganic Materials [PDF]
, 2007 利用X射线多晶衍射进行全谱拟合的Rietveld方法是材料科学中一种有效的研究方法。本文利用基于该原理设计的计算机程序GSAS和X’pertplus，结合自己的工作探索Rietveld方法在无机材料结构研究领域的一些应用，包括晶体结构精修、相变以及定量相分析。1．晶体结构精修。利用GSAS软件精修了未知结构化合物Li9Ga3(P2O7)3(PO4)2的晶体结构参数。该化合物为三方晶系，空间群为P3c1(158)，晶体学参数为：a=9.72879(13)Å，c=13.5827(3)Å
刘晓轩
core
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 +17 more
wiley +1 more source
Ciencia del Suelo, 2007 The mineralogical quantification of soils species is mainly obtained by analysis of X-ray diffraction (XRD) patterns. The classic method, for these analyses, is limited to semi quantitative determinations due to the overlapping of different specie's ...
Stella M Zabala +3 more
doaj