A5016632311- Magnetic and transport properties of perovskites and related materials
- Magnetism in coordination complexes
- Advanced Condensed Matter Physics
- Physics of Superconductivity and Magnetism
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Multiferroics and related materials
- Lanthanide and Transition Metal Complexes
- Organic and Molecular Conductors Research
- Electron Spin Resonance Studies
- Rare-earth and actinide compounds
- Ferroelectric and Piezoelectric Materials
- Magnetic properties of thin films
- Magnetic Properties of Alloys
- Metal complexes synthesis and properties
- Metal-Organic Frameworks: Synthesis and Applications
- Metal-Catalyzed Oxygenation Mechanisms
- Superconducting Materials and Applications
- Vibration Control and Rheological Fluids
- Metamaterials and Metasurfaces Applications
- Solid-state spectroscopy and crystallography
- Advanced Photocatalysis Techniques
- Dielectric properties of ceramics
- Magnetic Properties and Synthesis of Ferrites
- Theoretical and Computational Physics
Jilin University
2018-2024
State Key Laboratory of Superhard Materials
2018-2024
Donetsk Institute for Physics and Engineering named after O.O. Galkin
2014-2024
Institute of Physics
1998-2024
Jilin Medical University
2019-2020
Donetsk National Technical University
1999-2019
Jilin International Studies University
2019
National Academy of Sciences of Ukraine
2001-2018
Universitat de València
2004-2008
European Synchrotron Radiation Facility
2008
A pressure-induced linkage isomerization of the cyanide anion has been observed in single crystals a chromium(III)-iron(II) Prussian blue analogue formula K0.4Fe4[Cr(CN)6]2.8 square1.2.16H2O (1). Upon application pressure 0-1200 MPa range, ligand rotates and becomes C-bonded to iron(II) cations, leading stabilization their diamagnetic low-spin states. The result is decrease magnetization magnetic ordering temperatures from TC = 19 K at ambient 13 1200 MPa. initial properties can be restored...
Simultaneous study of magnetic and electrocatalytic properties cobaltites under extreme conditions expands the understanding physical chemical processes proceeding in them with possibility their further practical application. Therefore, La0.6Sr0.4CoO3 (LSCO) nanopowders were synthesized at different annealing temperatures tann = 850–900 °C, multifunctional studied comprehensively. As increases, rhombohedral perovskite structure LSCO becomes more single-phase, whereas average particle size...
Abstract Barocaloric cooling, that is, lowering the temperature of a material under pressure action, is an attractive solid‐state effect can potentially compete with volatile gas‐based cooling. To observe barocaloric (BCE), it necessary for materials to have high‐entropy, low‐hysteretic phase transitions large volume change between phases. Here details on new Fe II complex [Fe(L)(NCS) 2 ], L = N 1 , 3 ‐bis((1‐propyl‐1 H ‐1,2,3‐triazol‐4‐yl)methylene)‐2,2‐dimethylpropane‐1,3‐diamine)...
Low-spin, high-spin and spin-transition behaviours have been observed for the doubly interpenetrating three-dimensional bimetallic compounds (FeII(pz)[Ag(CN)2]2).pz (pz = pyrazine), (FeII(4,4'-bipy)2[Ag(CN)2]2) (4,4'-bipy 4,4'-bipyridine), (FeII(bpe)2[Ag(CN)2]2) (bpe bispyridylethylene), respectively. The single crystals of bpe derivative undergo a spin transition with large hysteresis loop at about 95 K. After several warming cooling cycles, become microcrystalline powder 50% transition....
Spin-crossover (SCO) complexes based on three-dimensional coordination polymers (see Figure) exhibit unprecedented pressure-tunable thermal and piezochromic bistability at room temperature. The thermal- piezohysteresis loops of the material can be tuned, providing a step towards reliable pressure-based memory systems or displays. Supporting information for this article is available WWW under http://www.wiley-vch.de/contents/jc_2089/2005/c1122_s.pdf from author. Please note: publisher not...
[Fe(hyetrz)3](3-nitrophenylsulfonate)2·3H2O (1·3H2O), with hyetrz = 4-(2‘-hydroxyethyl)-1,2,4-triazole, has been synthesized, and its physical properties have investigated several techniq...
Twelve coordination polymers with formula {Fe(3-Xpy)(2)[M(II)(CN)(4)]} (M(II): Ni, Pd, Pt; X: F, Cl, Br, I; py: pyridine) have been synthesised, and their crystal structures determined by single-crystal or powder X-ray analysis. All of the fluoro iodo compounds, as well chloro derivative in which M(II) is Pt, crystallise monoclinic C2/m space group, whereas rest all bromo derivatives orthorhombic Pnc2 group. In cases, iron(II) atom resides a pseudo-octahedral [FeN(6)] core, similar bond...
The effect of applied pressure on the magnetic properties Prussian blue analogue K0.4Fe4[Cr(CN)6]2.8·16H2O (1) has been analyzed by dc and ac susceptibility measurements. Under ambient conditions, 1 orders ferromagnetically at a critical temperature (TC) 18.5 K. application in 0−1200 MPa range, magnetization material decreases its shifts to lower temperatures, reaching TC = 7.5 K 1200 MPa. Pressure-dependent Raman Mössbauer spectroscopy measurements show that this striking behavior is due...
Manganites are multifunctional materials which widely used in both technology and devices. In this article, new prospects of their use as nanoparticles for various types applications demonstrated. For that, the ferromagnetic nanopowder La0.6Sr0.4MnO3 has been synthesized by sol-gel method with a subsequent annealing at 700-900 °C. The crystal structure, phase composition morphology well magnetic, magnetothermal electrocatalytic properties have studied comprehensively. critical sizes...
M\"ossbauer and magnetic susceptibility measurements were performed under pressure on three Prussian blue analogs, ${\mathrm{K}}_{0.1}{\mathrm{Co}}_{4}[{\mathrm{Fe}(\mathrm{CN})}_{6}{]}_{2.7}\ensuremath{\cdot}18{\mathrm{H}}_{2}\mathrm{O},$ ${\mathrm{K}}_{0.28}{\mathrm{Co}}_{4}[{\mathrm{Fe}(\mathrm{CN})}_{6}{]}_{2.76}\ensuremath{\cdot}18{\mathrm{H}}_{2}\mathrm{O},$ ${\mathrm{Cs}}_{0.7}{\mathrm{Co}}_{4}[{\mathrm{Fe}(\mathrm{CN})}_{6}{]}_{2.9}\ensuremath{\cdot}16{\mathrm{H}}_{2}\mathrm{O}.$ A...
An electronic switch at the molecular level has been realized by using a class of ionic compounds formula [Co(L)(diox)]Y (L = tetraazamacrocyclic ligand, Y mononegative anion). Such undergo temperature- and pressure-induced intramolecular one-electron transfer equilibria. The transition temperature interconversion varies with nature counterions (Y PF6, BPh4, I). Surprisingly effect anion on is not only governed its volume but also coulombic interaction.
Prospects for the use of manganites in various areas modern technologies require comprehensive studies their physical and chemical properties. La0.9Mn1.1O3 (LMO) ceramics have been synthesized at an annealing temperature tann 1150 °C with further post-annealing 1250, 1350, 1450 °C. As increases, structure symmetry changes, both crystallite size defects increase. The post-annealing, on one hand, leads to a dramatic reduction magnetocaloric effect (MCE) |-ΔSmaxM| from 3.50 0.75 J (kg K)-1 2 T...
Abstract In this work, a novel multiferroic‐like nanocomposite is designed and obtained using the high‐pressure torsion (HPT) method. The crystal structure, phase composition, morphology, ferromagnetic (FM), ferroelectric (FE) properties of initial powders ferroelectric/ferromagnetic nanocomposites are studied comprehensively. their composite show perovskite spinel crystalline phases for FE FM fractions, respectively. After HPT, particle sizes decreased significantly. It shown that consists...
Abstract The thermal spin‐crossover behaviour, photoexcitation and subsequent relaxation, as well the pressure‐induced behaviour at 298 K are discussed for non‐porous two‐dimensional Hofmann‐like coordination polymer [Fe(3‐Clpy) 2 Pd(CN) 4 ] ( 1 ). title compound undergoes a two‐step, cooperative thermal‐induced SCO with critical temperatures T c1 ↓ = 159.6 ↑ 164.5 first step c2 141.4 148.4 second step. Irradiation of low‐spin state green light (514 nm) 10 induced around 60 % iron(II)...
For many medical applications related to diagnosis and treatment of cancer disease, hyperthermia plays an increasingly important role as a local heating method, where precise control temperature parameters the working material is strongly required. Obtaining smart with "self-controlled" in desirable range relevant task. this purpose, nanopowder manganite perovskite super-stoichiometric manganese has been synthesized, which consists soft spherical-like ferromagnetic nanoparticles average size...