Results 71 to 80 of about 10,849 (249)

Multifaceted Roles of Tantalum in Promoting the Thermoelectric Performance of Mg3(Sb,Bi)2 Based Materials

Advanced Science, EarlyView.
A multifunctional tantalum incorporation strategy enables simultaneous tuning of carrier concentration, mitigation of grain‐boundary scattering, and enhanced phonon scattering in Mg3(Sb,Bi)2. These synergistic effects markedly improve carrier mobility and suppress lattice thermal conductivity, yielding both high material zT and high module conversion ...
Guangmeng You, Jingdan Lei, Kai Xu, Yuntian Fu, Xueke Gu, Chengxiao Peng, Zhen Wang, Jing Chen, Kunpeng Zhao, Chao Wang   +9 more
wiley   +1 more source

Impurity Tolerance in LiFePO4 Cathodes: Contrasting Structural, Electronic, and Electrochemical Roles of Residual Ni and Cr

Advanced Science, EarlyView.
Impurity tolerance in LiFePO4 cathodes varies strongly with impurity type and content. Low Ni levels are accommodated within the lattice with minimal structural disruption, whereas higher Ni contents introduce antisite disorder. In contrast, Cr impurities segregate from the LiFePO4 framework, blocking lithium‐ion pathways and leading to inferior ...
Minjin Kim, Hyerin Jeon, Jinhee Lee, Jinsub Choi   +3 more
wiley   +1 more source

Dislocation‐Mediated Lattice Distortion and Griffiths Phase Behavior in Melt‐Spun Ni2MnSb Ribbons

Advanced Science, EarlyView.
This figure illustrates how melt‐spinning introduces dislocations into Ni2MnSb Heusler alloys. TEM images reveal local lattice distortions and associated strain fields surrounding dislocations at a representative wheel speed. As wheel speed increases, these distortions promote the formation of ferromagnetic clusters within a paramagnetic matrix ...
Kun Wang, Siying Yu, Qizhong Zhao, Jiale Guo, Minxia Fang, Yichuan Tang, Pengqaing Hu, Yin Zhang, Chao Zhou, Kaiyan Cao, Fanghua Tian, Sen Yang   +11 more
wiley   +1 more source

Room Temperature Surfactant-Free Synthesis of Cobalt-Doped CaMoO₄ Nanoparticles: Structural and Microstructural Insights

Ceramics
This study reports the successful synthesis of pure cobalt-substituted calcium molybdate powders (Co-doped CaMoO4) through a co-precipitation method conducted at room temperature, without the use of surfactants or hazardous organic solvents.
Said Abidi, Mohamed Benchikhi
doaj   +1 more source

Leucopterin, the white pigment in butterfly wings: structural analysis by PDF fit, FIDEL fit, Rietveld refinement, solid-state NMR and DFT-D. [PDF]

IUCrJ, 2023
Bravetti F, Tapmeyer L, Skorodumov K, Alig E, Habermehl S, Hühn R, Bordignon S, Gallo A, Nervi C, Chierotti MR, Schmidt MU.   +10 more
europepmc   +1 more source

Lattice Distortion‐Driven Metal Exsolution in Perovskite Oxides

Advanced Science, EarlyView.
This study elucidates the mechanism of lattice distortion‐driven exsolution through a combination of computational simulations and experimental approaches. Lattice distortion facilitates the formation of oxygen vacancies and subsequent metal segregation, thereby enhancing the exsolution behavior.
Yo Han Kim, Uchan Jeon, Hyeongwon Jeong, Bo‐Ram Won, Jeong Woo Han, Jae‐ha Myung   +5 more
wiley   +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

MAUD Rietveld Refinement Software for Neutron Diffraction Texture Studies of Single‑ and Dual‑Phase Materials. [PDF]

Integr Mater Manuf Innov, 2021
Saville AI, Creuziger A, Mitchell EB, Vogel SC, Benzing JT, Klemm-Toole J, Clarke KD, Clarke AJ.   +7 more
europepmc   +1 more source

Application of Multidimensional Rietveld Refinement

We showcase a method development in neutron powder diffraction, primarily driven by the future time-of-flight diffractometer POWTEX, developed in collaboration with Forschungszentrum Jülich at FRM-II in Garching. Within the DAPHNE project, we are expanding these methods for wider applications, emphasizing sustainability.
Meinerzhagen, Yannick, Houben, Andreas, Dronskowski, Richard   +2 more
openaire   +2 more sources

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