Results 41 to 50 of about 41,652 (172)

Science‐Towards‐Technology Breakthrough in CO2 Electroreduction: Multiphysics, Multiscale, and Artificial Intelligence Insights

Advanced Materials, EarlyView.
Electrochemical CO2RR is a key technology for converting CO2 into chemicals, but there remains a gap between “laboratory science” and “engineering practice” in current research. This review establishes a multi‐scale research framework, encompassing atomic‐level characterization, microenvironment regulation, external field‐assisted optimization, and AI ...
Ping Hong, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source

Room temperature Mössbauer characterization of ferrite with spinel structure [PDF]

Science of Sintering
Cobalt ferrite (CoFe2O4) nanoparticle were obtained by different synthesis methods: coprecipitation (CO), ultrasonically assisted coprecipitation (US-CO), coprecipitation followed by mechanochemical treatment (MC-CO), microemulsion (ME) and microwave ...
Lazarević Zorica Ž., Milutinović Aleksandra, Umićević Ana, Ivanovski Valentin N., Koteski Vasil, Anđelković Ljubica, Ćurčić Milica   +6 more
doaj   +1 more source

An insight into spin-chain magnetism through Moessbauer spectroscopic investigations in Eu-doped Ca3Co2O6 and Ca3CoRhO6

, 2008
We report the results of 151Eu Moessbauer effect and magnetization measurements in the Eu-doped Ca3Co2O6 and Ca3CoRhO6, which are of great current interest in the fields of spin-chain magnetism and geometrical frustration.
A. Maignan, E. V. Sampathkumaran, Niharika Mohapatra, P. L. Paulose   +3 more
core   +1 more source

Self‐Regulating Sodium‐Ion Battery Materials: From Phase Reconstruction to Functional Activation

Advanced Materials, EarlyView.
Self‐regulating sodium‐ion batteries hinge on programmable phase behavior in layered oxides, interphases that renew without growth, and electrolytes that steer solvation and chemistry. This review distills mechanisms into design rules that span composition, site and entropy tuning, and self‐buffering anodes, linking operando evidence to choices and ...
Hong Gao, Dingyi Zhang, Chao Wang, Tianxiao Chen, Xingwang Peng, Yuxiu Xing, Xin Guo, Yufei Zhao, Yong Wang, Guoxiu Wang, Hao Liu   +10 more
wiley   +1 more source

Synchrotron Mössbauer spectroscopic study of ferropericlase at high pressures and temperatures [PDF]

, 2009
The electronic spin state of Fe^(2+) in ferropericlase, (Mg_(0.75)Fe_(0.25))O, transitions from a high-spin (spin unpaired) to low-spin (spin paired) state within the Earth’s mid-lower mantle region.
Gavriliuk, Alexander. G., Hu, Michael Y., Jacobsen, Steven D., Lerche, Michael, Lin, Jung-Fu, Sturhahn, Wolfgang, Zhao, Jiyong   +6 more
core  

Iron and molybdenum valences in double-perovskite (Sr,Nd)2FeMoO6: electron-doping effect

, 2003
Double perovskite, (Sr1-xNdx)2FeMoO6, was doped with electrons through partial substitution of divalent Sr by trivalent Nd (0 < x < 0.2). The Fe valence and the degree of B-site order were probed by 57Fe Mossbauer spectroscopy.
Chmaissem, Dass, Greneche, H. Yamauchi, Izumi, J. Lindén, Karppinen, Kobayashi, Lindén, Lindén, Lindén, M. Karppinen, Navarro, Navarro, T. Motohashi, T. Shimada, Yamamoto   +16 more
core   +1 more source

Synthesis and characterization of La_0.8Sr_1.2Co_0.5M_0.5O_4-? (M=Fe, Mn) [PDF]

, 2009
The M4+-containing K2NiF4-type phases La0.8Sr1.2Co0.5Fe0.5O4 and La0.8Sr1.2Co0.5Mn0.5O4 have been synthesized by a sol-gel procedure and characterized by X-ray powder diffraction, thermal analysis, neutron powder diffraction and Mössbauer spectroscopy ...
Bowman, Bréard, Bull, C. Greaves, Dann, El Shinawi, F.J. Berry, H. El Shinawi, Hayward, Hector, Hill, J.F. Marco, Karen, Labbe, Larson, Prado, Rao, Sears, Skinner, Vashook   +19 more
core   +1 more source

Phonon Engineering in Ultrathin Sn Films

Advanced Materials Interfaces, EarlyView.
When embedded in multilayer structures, ultrathin Sn layers demonstrate strongly modified vibrational density of states (VDOS). This allows engineering a drastic increase of the Lamb‐Mössbauer factor fLM$f_{\text{LM}}$ and thereby of the cross‐section for coherent excitation of the ultrasharp nuclear resonance of 119Sn$^{119}{\rm Sn}$. This enables the
Sven Velten, Kai Schlage, Ilya Sergeev, Olaf Leupold, René Steinbrügge, Varimalla Raghavendra Reddy, Michael Yu Hu, Esen Ercan Alp, Lars Bocklage, Ralf Röhlsberger   +9 more
wiley   +1 more source

Metallurgical quality evaluation of the wind turbine main shaft 42CrMo4 steel: microscopic and Mössbauer studies

Nukleonika, 2017
In this paper, the results of the complex examination of the 42CrMo4 steel samples are presented. The samples were taken from the metallurgical forging prepared for the production of the wind turbine main shaft.
Siemiątkowski Zbigniew, Gzik-Szumiata Małgorzata, Szumiata Tadeusz, Rucki Mirosław, Martynowski Robert   +4 more
doaj   +1 more source

Síntesis y caracterización Mössbauer de magnetitas dopadas con Cu y Cr

Revista de Metalurgia, 2003
Se presenta una investigación Mössbauer detallada de magnetitas preparadas bajo diferentes condiciones hidrotermales y dopadas con Cu y Cr. Las muestras fueron caracterizadas utilizando la espectrometría Mössbauer a temperatura ambiente, espectroscopia ...
C. A. Barrero, A. L. Morales, J. Mazo-Zuloaga, F. Jaramillo, G. Pérez, D. M. Escobar, C. Arroyave, J. Tobón, P. M. Montoya, L. Osorio, R. E. Vandenberghe, J. M. Greneche   +11 more
doaj   +1 more source