Results 21 to 30 of about 6,006 (137)

A Non‐Covalent [4Fe–4S]/[2Fe] Interface in HydF Guides [FeFe]‐Hydrogenase Maturation

Angewandte Chemie, EarlyView.
Bridged or not? 57Fe NRVS reveals a non‐covalent, electronically coupled interaction between the HydF [4Fe–4S] cluster and the [2Fe] precursor. Boltz‐2 structure predictions suggest that the cubane organizes lipoate‐dependent Hmet chemistry, positioning intermediates for assembly of the CH2–NH–CH2 bridge during H‐cluster biosynthesis.
Giorgio Caserta, Princess R. Cabotaje, Armel T. Waffo, Deepak Prajapat, Ilya Sergueev, Stefan Frielingsdorf, Gustav Berggren   +6 more
wiley   +2 more sources

Local structure of amorphous and crystalline Ge2Sb2Te5 films

Physics of Complex Systems, 2021
An effective way to examine structural rearrangement in solids is Mössbauer spectroscopy. A key requirement to Mössbauer probes used for these purposes is the possibility of their localization in a certain site of the crystal lattice or in the structural
Юрий Александрович Петрушин, Алла Валентиновна Марченко, Павел Павлович Серегин   +2 more
doaj   +1 more source

Polarization Analysis in Mössbauer Reflectometry with Synchrotron Mössbauer Source

Condensed Matter, 2019
Polarization selection of the reflected radiation has been employed in Mössbauer reflectivity measurements with a synchrotron Mössbauer source (SMS).
Marina Andreeva, Roman Baulin, Aleksandr Chumakov, Tatiyana Kiseleva, Rudolf Rüffer   +4 more
doaj   +1 more source

Espectroscopia Móssbauer

Revista de Ciencias, 1989
En los núcleos, como en los átomos, existen niveles de energía y cuando el núcleo pasa de un estado a otro de más baja energía ocurre la emisión de rayos y.
Germán A. Pérez
doaj   +1 more source

Constraining the origins of the magnetism of lepidocrocite (γ-FeOOH): a Mössbauer and magnetisation study

Frontiers in Earth Science, 2016
Lepidocrocite, a widespread environmentally relevant iron oxyhydroxide, has been investigated for decades using 57Fe Mössbauer spectroscopy and magnetic measurements.
Yohan eGuyodo, Pierre eBonville, Jessica L Till, Jessica L Till, Georges eOna-Nguema, France eLagroix, Nicolas eMenguy   +6 more
doaj   +1 more source

Identification of iron-bearing minerals in basalts and pillow lavas of the Kaczawa Mountains using 57Fe Mössbauer spectroscopy

Nukleonika, 2017
The Kaczawa Mountains along with the Kaczawa foothill comprise a complicated geological unit that is called the Kaczawa metamorphic (Sudetes, SW Poland). The aim of our work was to identify the iron-bearing minerals in samples of basalts and pillow lavas
Malczewski Dariusz, Jeleń Martyna, Żaba Jerzy, Błachowski Artur, Ruebenbauer Krzysztof, Dziurowicz Maria   +5 more
doaj   +1 more source

Overcoming the Trade‐Off Between Magnetic Coupling and Electrical Insulation in Soft Magnetic Materials via Nanochain Engineering

Advanced Science, EarlyView.
This study employs a nanochain engineering approach combined with an in situ oxidation strategy to fabricate self‐insulating iron‐based magnetic nanochains, addressing the challenge of balancing magnetic coupling and electrical insulation in soft magnetic materials.
Dingrong Zuo, Lichen Liu, Haibo Ke, Rongsheng Bai, Huaping Ding, Jing Zhou, Zhenxiang Cheng, Peng Yu, Weihua Wang   +8 more
wiley   +1 more source

Observation of nuclear gamma resonance with superconducting tunnel junction detectors

AIP Advances, 2016
Nb-based superconducting tunnel junction detectors have been used for the registration of electrons following a nuclear gamma resonance (Mössbauer effect).
M. G. Kozin, I. L. Romashkina, L. V. Filippenko, V. P. Koshelets   +3 more
doaj   +1 more source

How Proton Incorporation Reshapes Lattice Dynamics In BaSnO3‐Type Proton Conductors

Advanced Science, EarlyView.
Yttrium‐doped BaSnO3 exhibits isotope‐dependent changes in its low‐energy vibrational density of states upon hydration. Comparison of dry, H2O‐, and D2O‐treated samples re‐veals mass‐dependent phonon renormalization linked to proton dynamics near oxygen va‐cancies, providing experimental insight into hydrogen‐coupled lattice excitations in proton ...
Artur Braun, Alexey Rulev, Nobumoto Nagasawa, Hongxin Wang, Tatyana Bendikov, Vladimir Pomjakushin, Martin Kunz, Yoshitaka Yoda, Qianli Chen, Stephen P. Cramer   +9 more
wiley   +1 more source

Conformational Transduction Amplification in a Biomimetic Polyelectrolyte for Ultrasensitive Imaging of Iron Metabolism

Advanced Science, EarlyView.
This work designs a peptide‐free polyelectrolyte with stable, switchable conformations and near‐infrared fluorescence in water. It harnesses a cooperative Fe3+‐triggered sheet‐to‐helix transition to generate nonlinear fluorescence quenching, enabling the ultrasensitive, real‐time visualization of Fe3+ ion distribution and metabolic trafficking at ...
Yeqiang Zhou, Danqi Yang, Yiwei Wang, Shuangyan Li, Fan Fan, Jiayu Zou, Cheng Zhang, Yang Liu, Hong Tan, Mingming Ding   +9 more
wiley   +1 more source