21 Result(s)

Article

Structure of the Local Environment and Hyperfine Interactions of ⁵⁷Fe Probe Nuclei in AMnO₃ (A = Sc, In)

The results of a Mössbauer study of hyperfine interactions of ⁵⁷Fe probe nuclei in isostructural hexagonal manganites h-ScMnO₃ and h-InMnO₃ are presented. The results of measurements of the Mössbauer spectra at T

A. V. Sobolev, S. Šandalova, M. N. Smirnova… in Russian Journal of Inorganic Chemistry (2023)

Article

Jahn–Teller Ordering Dynamics in the Paraelectric BiMn₇O₁₂ Phase: ⁵⁷Fe Probe Mössbauer Diagnostics

The electrical hyperfine interactions of the ⁵⁷Fe probe nuclei stabilized in the structure of the BiMn₇O₁₂ manganite are studied by Mössbauer spectroscopy. Mössbauer spectra are measured in the para-electric temp...

A. V. Sobolev, V. I. Nitsenko, A. A. Belik… in Journal of Experimental and Theoretical Ph… (2023)

Article

Synthesis and ⁵⁷Fe Mössbauer Studies of Polycrystalline Magnesium Ferrites MgFe₂O₄ and Mg(Fe_0.8Ga_0.2)₂O₄

The main goal of this study is the preparation of single-phase MgFe₂O₄ and Mg(Fe_0.8Ga_0.2)₂O₄ powders using a gel auto-combustion method. X-ray powder diffraction (PXRD), micro-X-ray fluorescence spectrometry (μ-X...

I. S. Glazkova, M. N. Smirnova, O. N. Kondrat’eva… in Russian Journal of Inorganic Chemistry (2023)

Article

Local Structure and Magnetic Hyperfine Interactions of ⁵⁷Fe Probe Nuclei in TlCr_0.95⁵⁷Fe_0.05O₃

Mössbauer measurements have been performed on nuclei of ⁵⁷Fe probe atoms in the perovskite-structure of the TlCr_0.95⁵⁷Fe_0.05O₃ chromite synthesized at high pressure. Reasons for the observed differences between t...

A. V. Sobolev, Wei Yi, A. A. Belik… in Journal of Experimental and Theoretical Ph… (2021)

Article

⁵⁷Fe Probe Mössbauer Study of Magnetic Phase Transitions in MnP Phosphide

⁵⁷Fe Mössbauer studies of Mn_0.995⁵⁷Fe_0.005P monophosphide have been performed in a wide temperature range including magnetic transitions at the points T_C = 292 K and T_N = 60 K, the former of which (at T_C) is a tr...

A. A. Aslandukova, A. V. Sobolev… in Journal of Experimental and Theoretical Ph… (2020)

Article

Probe Mössbauer Diagnostics of Charge Ordering in Manganites CaCu_xMn_7–xO₁₂ (0 ≤ x ≤ 1)

We present the results of our ⁵⁷Fe probe Mössbauer study in manganites CaCu_xMn_6.96–x⁵⁷Fe_0.04O₁₂ (0 ≤ x ≤ 1). We have established that for compositions 0 ≤ x ≤ 0.15 near the structural R\(\bar {3}\) ↔ Im$$\bar {3}...

I. S. Glazkova, V. S. Rusakov, A. V. Sobolev… in Journal of Experimental and Theoretical Ph… (2019)

Article

Electric Hyperfine Interactions of ⁵⁷Fe Impurity Atoms in ACrO₃ Perovskite-Type Chromites (A = Sc, In, Tl, Bi)

Perovskite-type chromites ACr_0.95⁵⁷Fe_0.05O₃ (A = Sc, In, Tl, Bi) have been studied by probe Mössbauer spectroscopy on ⁵⁷Fe nuclei. The spectra of the ACr_0.95⁵⁷Fe_0.05O₃ samples (A = Sc, In, Bi) measured above the ...

A. V. Sobolev, A. V. Bokov, W. Yi… in Journal of Experimental and Theoretical Ph… (2019)

Article

Probe Mössbauer Spectroscopy of BiNi_0.96⁵⁷Fe_0.04O₃

This paper presents results of a ⁵⁷Fe probe Mössbauer spectroscopy study of the BiNi_0.96⁵⁷Fe_0.04O₃ nickelate. The spectra measured above its TN demonstrate that Fe³⁺ cations heterovalently substitute for Ni²⁺ nic...

Yu. O. Lekina, I. S. Glazkova, A. A. Belik, I. A. Presniakov… in Inorganic Materials (2018)

Article

Hyperfine Interactions of ⁵⁷Fe Nuclei in ScCo_1–xFe _x O₃ (x = 0.05, 0.4) Substituted Cobaltites

The Mössbauer study of ⁵⁷Fe nuclei in Sc_1–yCo_1–xFe _x O_3–3/2y (x = 0.05, 0.4; y = 0.1, 0.2) cobaltites has been reported. Mössbauer spectra, as well as calculations of the paramet...

I. S. Glazkova, A. V. Sobolev, W. Yi… in Journal of Experimental and Theoretical Ph… (2018)

Article

Preparation and Characterization of Borosilicate Glass Waste Form for Immobilization of HLW from WWER Spent Nuclear Fuel Reprocessing

Borosilicate glassy materials for immobilization of HLW from Russian WWER (PWR) spent nuclear fuel reprocessing were designed, synthesized in a resistive furnace, and characterized by XRD, SEM/EDS, and FTIR sp...

S. V. Stefanovsky, M. V. Skvortsov, O. I. Stefanovsky, B. S. Nikonov… in MRS Advances (2017)

Article

Local crystal structure of multiferroic BiMnO₃ studied by ⁵⁷Fe probe Mössbauer spectroscopy

This paper presents a ⁵⁷Fe probe Mössbauer spectroscopy study of a BiMn_0.96 ⁵⁷Fe_0.04O₃ manganite synthesized at high pressure (6 GPa). The BiMnO₃ manganite possesses multiferroic p...

Ya. S. Glazkova, A. A. Belik, A. V. Sobolev, I. A. Presniakov in Inorganic Materials (2016)

Article

Anisotropic magnetic hyperfine interactions in phosphide FeP

The results from a Mössbauer study of ⁵⁷Fe Mössbauer nuclei in binary phosphide FeP, which has an unusual magnetic structure, are presented. Model decoding of the Mössbauer spectra is performed with allowance for...

I. A. Presniakov, A. V. Sobolev… in Bulletin of the Russian Academy of Science… (2015)

Article

Hyperfine interactions of ⁵⁷Fe impurity nuclei in multiferroic CuCrO₂

Hyperfine interactions of ⁵⁷Fe nuclei in multiferroic CuCrO₂ are studied by means of Mössbauer probe spectroscopy in a wide range of temperatures, including that of the magnetic phase transition. The temperature ...

V. S. Rusakov, I. A. Presniakov… in Bulletin of the Russian Academy of Science… (2015)

Article

Oxidation state and coordination of iron in sodium–aluminum–iron phosphate glasses and their hydrolytic stability

Ya. S. Glazkova, S. N. Kalmykov, I. A. Presniakov… in Doklady Physical Chemistry (2015)

Article

Hyperfine magnetic interactions of ⁵⁷Fe nuclei in NaFeAs arsenide

The results of the Mössbauer effect studies of layered NaFeAs arsenide in a wide temperature range are presented. The measurements at T > T _N demonstrate that the main part (∼90%) of iron atoms ar...

I. A. Presniakov, I. V. Morozov, A. V. Sobolev, M. V. Roslova… in JETP Letters (2013)

Article

Hyperfine interactions of ⁵⁷Fe impurity nuclei in TmNiO₃ and YbNiO₃ nickelates in the range of magnetic and structure phase transitions

Hyperfine interactions of ⁵⁷Fe impurity nuclei are studied by probe Mössbauer spectroscopy in TmNiO₃ and YbNiO₃ perovskite-like nickelates in the ranges of temperature transitions of an insulator (T < T ...

V. S. Rusakov, I. A. Presniakov… in Bulletin of the Russian Academy of Science… (2013)

Article

⁵⁷Fe and ¹¹⁹Sn probe Mössbauer spectroscopy investigation of perovskite-type double manganite family CaCu _x Mn_7−x O₁₂ (x = 0, 0.15, 3)

CaCu _x Mn_7−x O₁₂ (x = 0, 0.15, 3) manganites were studied by ⁵⁷Fe and ¹¹⁹Sn probe Mössbauer spectroscopy. It was established that the ⁵⁷Fe and ¹¹⁹Sn probe...

V. S. Rusakov, I. A. Presniakov… in Bulletin of the Russian Academy of Science… (2011)

Article

Structure of the local environment and hyperfine interactions of ⁵⁷Fe probe atoms in DyNiO₃ nickelate

The local structure of DyNiO₃ nickelate at both sides of the insulator (T < T _im) ↔ metal (T > T _im) phase transition was studied by probe ⁵⁷Fe Mössbauer spectrosco...

V. S. Rusakov, I. A. Presniakov, G. Demazeau… in Bulletin of the Russian Academy of Science… (2010)

Article

Electronic state of ⁵⁷Fe probe atoms in perovskite-type Ni(III) and Cu(III) oxides

A comparative study of the electronic state of ⁵⁷Fe probe atoms in nickelates and cuprates LaM _0.99 ⁵⁷Fe_0.01O₃ and LaSrM _0.99 ...

I. A. Presniakov, V. S. Rusakov… in Bulletin of the Russian Academy of Science… (2010)

Article

Magnetic hyperfine interactions of ¹¹⁹Sn probe atoms in the binary perovskite CaCu₃Mn₄O₁₂

The manganite CaCu₃Mn₄O₁₂ doped by ¹¹⁹Sn atoms (about 1 at % with respect to Mn atoms) is studied by Mössbauer spectroscopy. The introduction of diamagnetic tin atoms is found not to affect the structure of the m...

V. S. Rusakov, I. A. Presniakov… in Journal of Experimental and Theoretical Ph… (2009)