scholarly journals Локальная структура аморфных и кристаллических пленок Ge-=SUB=-2-=/SUB=-Sb-=SUB=-2-=/SUB=-Te-=SUB=-5-=/SUB=-

2020 ◽  
Vol 46 (19) ◽  
pp. 19
Author(s):  
А.В. Марченко ◽  
Е.И. Теруков ◽  
Ф.С. Насрединов ◽  
П.П. Серегин
Keyword(s):  
Mössbauer Spectroscopy ◽  
Mossbauer Spectroscopy ◽  
Spectroscopy Data ◽  
Amorphous Films ◽  
Tetrahedral Symmetry ◽  
Mößbauer Spectroscopy ◽  
Local Surrounding

The Mössbauer spectroscopy data on the 119Sn, 121Sb and 125Te isotopes have showed that the structure of germanium atoms local surrounding changes as a result of Ge2Sb2Te5 amorphous films crystallization (tetrahedral symmetry changes to octahedral), while the environment of antimony and tellurium atoms does not change, and for antimony atoms it is close to that in the Sb2Te3 compound.

Local heterogeneity in the distribution of iron ions in CR-spinel from Ural ultramafic massifs: Evidence from Mössbauer spectroscopy data

2010 ◽  
Vol 52 (7) ◽  
pp. 669-678
Author(s):  
S. L. Votyakov ◽  
V. P. Suetin ◽  
V. P. Lyutoev ◽  
A. Yu. Lysyuk ◽  
A. B. Mironov ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Mossbauer Spectroscopy ◽  
Iron Ions ◽  
Spectroscopy Data ◽  
Mößbauer Spectroscopy ◽  
Local Heterogeneity

scholarly journals Investigation of phase transformations of iron nanoparticles during thermal annealing

2019 ◽  
Vol 201 ◽  
pp. 02003
Author(s):  
Dinara Tulebayeva ◽  
Assel Yermekova ◽  
Artem Kozlovskiy ◽  
Maxim Zdorovets
Keyword(s):  
Mössbauer Spectroscopy ◽  
Iron Oxide ◽  
Phase Transformations ◽  
Mossbauer Spectroscopy ◽  
Spectroscopy Data ◽  
X Ray Diffraction ◽  
Mößbauer Spectroscopy ◽  
Structure Of Nanoparticles ◽  
Subsequent Phase ◽  
Annealing Defects

Structural properties and phase composition of nanoparticles based on iron oxide were studied. Mossbauer spectroscopy, X-ray diffraction, and scanning electron microscopy were used for the analysis of phase transformations. According to XRD and Mossbauer spectroscopy data, an increase in the annealing temperature, as well as the subsequent phase transformations of magnetite into maghemite and then to hematite, indicate an improvement in the structure and a decrease in microdistortions in the lattice as a result of annealing defects and vacancies. According to Mossbauer spectroscopy data at temperatures above 400°C, the lines of characteristic FeO, which are characteristic for disordered iron oxide, are observed, which also confirms the improvement of the crystal structure of nanoparticles.

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