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Fe-gluconate was studied by means of the M\"ossbauer spectroscopy in the temperature interval of 80-305K. The measured spectra were analyzed in terms of two subspectra and, alternatively, two distributions of the quadrupole splitting. The…

Materials Science · Physics 2016-03-01 S. M. Dubiel , J. Cieslak

The local atomic structure and lattice dynamics of two isostructural layered transition metal dichalcogenides (TMDs), 1T-TiSe$_2$ and 1T-VSe$_2$, were studied using temperature-dependent X-ray absorption spectroscopy at the Ti, V, and Se…

Materials Science · Physics 2024-01-30 Inga Pudza , Boris Polyakov , Kaspars Pudzs , Edmund Welter , Alexei Kuzmin

The coexistence of high-temperature intrinsic ferromagnetic ordering, large magnetic anisotropy, along with novel mechanical properties such as ferroelasticity and flexibility, in experimental feasible two-dimensional (2D) crystals is…

Mesoscale and Nanoscale Physics · Physics 2025-11-21 Xinyuan Huang , Yueqiao Qu , Yu Liao , Qian Zheng , Ran Liu , Yu Chen , Liang Liu , Junzhong Wang , Gang Yao

We have measured far infrared reflectance and transmittance spectra as well as Raman scattering spectra of \alpha'-NaV2O5 single crystals for all the principal polarizations. The temperature range above the phase transition temperature…

Strongly Correlated Electrons · Physics 2019-08-17 M. N. Popova , A. B. Sushkov , S. A. Golubchik , B. N. Mavrin , V. N. Denisov , B. Z. Malkin , A. I. Iskhakova , M. Isobe , Y. Ueda

57Fe-Mossbauer spectra of superconducting beta-FeSe, the Li/NH3 intercalate product and a subsequent sample of this intercalate treated with moist He gas have been measured in temperature range 4.7 - 290 K. A correlation is established…

Ca10(Pt3As8)(Fe2As2)5 is the parent compound for a class of Fe-based high-temperature superconductors where superconductivity with transition temperatures up to 30 K can be introduced by partial element substitution. We present a combined…

Superconductivity · Physics 2014-09-15 A. Sapkota , G. S. Tucker , M. Ramazanoglu , W. Tian , N. Ni , R. J. Cava , R. J. McQueeney , A. I. Goldman , A. Kreyssig

A sigma-Fe54.5Cr45.5 samples irradiated in vacuum with 2 MeV Fe3+ ions at 300, 400, 475 and 700 deg C to the maximum dose of 12.5 dpa were studied with the conversion electron M\"ossbauer spectroscopy (CEMS). The analysis of the room…

Materials Science · Physics 2017-03-14 S. M. Dubiel , J. Zukrowski

Here, we report self flux single crystal growth of FeTe1-xSex for x = 0 to 0.50 series via solid state reaction route,the resulted crystals as seen are shiny. X Ray diffraction performed on the surface of crystals elucidated the growth in…

Superconductivity · Physics 2019-01-15 P. K. Maheshwari , V. Raghavendra Reddy , Bhasker Gahtori , V. P. S. Awana

Debye temperature, $\Theta_D$, of Fe-rich Fe$_{100-x}$Cr$_x$ disordered alloys with $0\le x \le 22.3$ was determined from the temperature dependence of the central shift of M\"ossbauer spectra recorded in the temperature range of 60 -- 300…

Materials Science · Physics 2010-02-17 B. F. O. Costa , J. Cieslak , S. M. Dubiel

The Debye temperature, T_D, of sigma-phase Fe_(100-x)Mo_x compounds with 47 < x < 56.7 was determined from the temperature dependence of the centre shift of M\"ossbauer spectra recorded in the temperature range of 80 - 300 K. Its…

Materials Science · Physics 2013-07-05 J. Cieslak , S. M. Dubiel

Amorphous Fe-gluconate was studied by means of the X-ray diffraction and M\"ossbauer spectroscopy. Spectra measured in the temperature range between 78 and 295 K were analysed in terms of three doublets using a thin absorber approximation…

Materials Science · Physics 2020-06-02 Stanisław M. Dubiel , Łukasz Gondek , Jan Żukrowski

Interface-enhanced high-temperature superconductivity in one unit-cell (UC) FeSe films on SrTiO3(001) (STO) substrate has recently attracted much attention in condensed matter physics and material science. By combined in-situ scanning…

Motivated by the high superconducting transition temperature of monolayer FeSe on SrTiO3, we propose a potential three-dimensional high-temperature superconductor superlattice FeSe-SrTiO3 and study its structural stability and electronic…

Superconductivity · Physics 2016-07-01 Sinisa Coh , Dung-Hai Lee , Steven G. Louie , Marvin L. Cohen

Single-layer FeSe films with extremely expanded in-plane lattice constant of 3.99A are fabricated by epitaxially growing FeSe/Nb:SrTiO3/KTaO3 heterostructures, and studied by in situ angle-resolved photoemission spectroscopy. Two elliptical…

Superconductivity · Physics 2014-03-14 R. Peng , X. P. Shen , X. Xie , H. C. Xu , S. Y. Tan , M. Xia , T. Zhang , H. Y. Cao , X. G. Gong , J. P. Hu , B. P. Xie , D. L. Feng

Debye temperature, TD, of Fe100-xCrx disordered alloys with 0<x<99.9 was determined from the temperature dependence of the centre shift of 57Fe Mossbauer spectra recorded in the temperature range of 80-300K. Its compositional dependence…

Materials Science · Physics 2010-01-19 S. M. Dubiel , J. Cieslak , B. F. O. Costa

Iron-titanium sulfides FeTi2S4 and Fe2TiS4 have been structurally and magnetically characterized using powder X Ray Diffraction with Rietveld refinement method and 57Fe M\"ossbauer spectroscopy at variable temperature. Both sulfides have…

Materials Science · Physics 2019-05-10 B. P. Embaid , O. M. Barrios , M. V. Bello

We have investigated the temperature evolution of the magnetic structures of HoFeO$_3$ by single crystal neutron diffraction. The three different magnetic structures found as a function of temperature for \hfo\ are described by the magnetic…

Materials Science · Physics 2016-04-29 T. Chatterji , M. Meven , P. J. Brown

High temperature superconductivity in one unit cell (1 UC) FeSe on SrTiO3 heterostructure has become a research frontier in condensed matter physics and material science. The superconducting transition temperature (Tc) of ultrathin FeSe…

Superconductivity · Physics 2020-03-05 Chaofei Liu , Jian Wang

Epitaxial engineering of solid-state heterointerfaces is a leading avenue to realizing enhanced or novel electronic states of matter. As a recent example, bulk FeSe is an unconventional superconductor with a modest transition temperature…

Superconductivity · Physics 2017-03-29 Dennis Huang , Jennifer E. Hoffman

A series of nine samples of \sigma-Fe_{100-x}Mo_x with 44<x<57 were synthesized by a sintering method. The samples were investigated experimentally and theoretically. Using X-ray diffraction techniques structural parameters such as lattice…

Materials Science · Physics 2013-01-25 J. Cieslak , S. M. Dubiel , J. Przewoznik , J. Tobola