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  1. Article

    Open Access

    Classical Density Functional Theory Approach to the Vibrational Properties and Lattice Specific Heat of a Quasi-One-Dimensional Antiferromagnet KFeSe2

    We have performed ab initio calculations of vibrational properties of KFeSe2 compound utilizing density functional theory. Total and element specific phonon densities of states have been calculated within a direc...

    M. D. Kuznetsov, A. G. Kiiamov, D. A. Tayurskii in JETP Letters (2022)

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    Article

    On the Ab Initio DFT + U Calculations of the Physical Properties of a Compound with Strong Electron–Electron Correlations by the Case of KFeS2

    The magnetic and electronic properties of quasi-one-dimensional iron chalcogenide compound KFeS2 have been calculated within two DFT + U approaches based on the simplified LSDA + U approach and rotationally invar...

    A. G. Kiiamov, M. D. Kuznetsov, R. G. Batulin, D. A. Tayurskii in JETP Letters (2022)

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    Article

    Impact of Impurity Phases and Superstoichiometric Iron on the Critical Temperature of Iron Chalcogenides

    The results of transport and magnetic measurements of iron chalcogenide crystals are analyzed taking into account the data of the chemical composition and impurity phases obtained by means of X-ray diffractome...

    I. I. Gimazov, A. G. Kiiamov, N. M. Lyadov, A. N. Vasiliev, D. A. Chareev… in JETP Letters (2021)

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    Article

    Femtosecond Optical and Magneto-Optical Spectroscopy Study of Magnetic and Electronic Inhomogeneities in a Pd0.94Fe0.06 Thin Film

    The results of a femtosecond optical and magneto-optical spectroscopy study of a thin epitaxial film of a low-temperature magnetically soft Pd0.94Fe0.06 alloy on a ({dy001})-MgO substrate are reported. The photoi...

    A. V. Petrov, R. V. Yusupov, S. I. Nikitin, A. I. Gumarov, I. V. Yanilkin… in JETP Letters (2019)

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    Article

    The Spectral and Magnetic Properties of Er3+ and Yb3+ Ions in Y2Ti2O7 Crystals with a Pyrochlore Structure

    Cubic Y2Ti2O7 single crystals doped with Er3+ or Yb3+ ions have been studied by the methods of electron spin resonance (ESR) and selective laser spectroscopy. ESR spectra exhibit signals from rare-earth ions that...

    R. G. Batulin, M. A. Cherosov, I. F. Gil’mutdinov… in Physics of the Solid State (2019)

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    Article

    DFT and Mössbauer Spectroscopy Study of a FeTe0.5Se0.5 Single Crystal

    The iron based superconductor FeSe0.5Te0.5 has been studied applying Mössbauer spectroscopy and ab initio density functional theory calculations of hyperfine parameters of iron nuclei. It has been shown that the ...

    A. G. Kiiamov, D. A. Tayurskii, F. G. Vagizov, D. Croitori, V. Tsurkan… in JETP Letters (2019)

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    Article

    Observation of Persistent Currents in Finely Dispersed Pyrolytic Graphite

    The trapped magnetic flux in the finely ground pyrolytic graphite sample annealed at 670 K in air has been observed. Flux trap** occurs on cooling of the sample from room temperature to 10 K in a magnetic fi...

    M. Saad, I. F. Gilmutdinov, A. G. Kiiamov, D. A. Tayurskii, S. I. Nikitin… in JETP Letters (2018)

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    Article

    Coherent X-ray diffraction imaging of nanoengineered polymeric capsules

    For the first time, nanoengineered polymeric capsules and their architecture have been studied with coherent X-ray diffraction imaging technique. The use of coherent X-ray diffraction imaging technique allowed...

    S. Erokhina, L. Pastorino, D. Di Lisa, A. G. Kiiamov, A. R. Faizullina… in JETP Letters (2017)

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    Article

    Magnetic properties of (SrFe12O19) x (CaCu3Ti4O12)1–x composites

    New composite materials (SrFe12O19) x (CaCu3Ti4O12)1–x (x = 0, 0.05, 1) have been synthesized. Their magnetic properties are studied in the tempe...

    R. M. Eremina, K. R. Sharipov, I. V. Yatsyk… in Journal of Experimental and Theoretical Ph… (2016)