Fizika Tverdogo Tela

The study is part of nanomedical biotechnology and is carried out by probing these systems using the Electronic Spin Resonance (ESR) method. The paper investigates Glass Ionomer Cement powder widely used in dental practice Glass Ionomer Cement C-Plus Triplekit-TM. To assess the quality of Glass Ionomer Cement and use ESR radiospectroscopy in the range from low (T=4.2 K) to room (T=300 K) temperatures. A new characteristic of compounds with nanocomplexes of magnetic iron ions Fe 3+ is applied. Key words: Electronic Spin Resonance (ESR), nanocrystals, crystal field potential, intensity of ESR lines.

None Shapovalov V.V.

None Shapovalov V.A.

None Sluzhbin Yu.A.

None Drokina T.V.

None Vorotynov A.M.

None Valkov V.I.

Физика твердого тела

Characteristics of Nanocomplexes with iron Fe-=SUP=-3+-=/SUP=- in Glass Ionomer Cement Powder by ESR method

通过ESR方法研究玻璃离子水门汀粉末中铁Fe<sup>3+</sup>纳米复合物的特性

Dielectric and acoustic studies of solid solutions were carried out (1-x)SrTiO 3 -xSrMg 1/3 Nb 2/3 O 3 . The dependence of the temperature of the antiferrodisorsion phase transition on the concentration x of the second component is obtained. The suppression of dielectricrelaxation at x≤0.03 and temperatures below the temperature of the antiferrodisorsion transition, as well as the coexistence of dielectric relaxation and antiferrodisorsion instability at 0.03&amp;lt;x≤0.15. The reasons for the blurring of the dependence of the relative speed of sound in the transition region and the features of the interaction of antiferrodisorsion instability and the dielectric subsystem are discussed. Keywords: antiferrodisorsion transition, dielectric relaxation, acoustic properties. Keywords: antiferrodisorsion transition, dielectric relaxation, acoustic properties.

None Smirnova E. P.

None Zaitseva N. V.

None Guk E. G.

None Sotnikov A. V.

Antiferrodisorsion transition and dielectric relaxation in SrTiO-=SUB=-3-=/SUB=--SrMg-=SUB=-1/3-=/SUB=-Nb-=SUB=-2/3-=/SUB=-O-=SUB=-3-=/SUB=-

反铁电-铁电转变与介电弛豫在SrTiO_3-SrMg_1/3Nb_2/3O_3中的研究

Solid solutions (1-x)SrTiO 3-x PbZrO 3 (x=0.5, 0.6, 07, 0.8, 0.9) were synthesized and their dielectric properties are investigated Measurement of dielectric hysteresis loops allowed us to obtain field dependences of the main parameters characterizing the effect of energy storage in these materials. The relationship of the obtained parameters with the evolution of the state of solid solutions from relaxors to antiferroelectrcs in this system is discussed. Keywords: solid solutions, energy storage effect, relaxors, antiferroelectrcs.

None Passet R. S.

None Sotnikova G. Yu.

None Gavrilov G. A.

Evolution of phase transitions and energy storage effect in SrTiO_3-PbZrO-=SUB=-3-=/SUB=- solid solutions

SrTiO_3-PbZrO_3固溶体中相变与储能效应的演变

Raman scattering spectra of linear carbon chains (carbines) localized in thin gold films of variable thickness are investigated. It is shown that the integral line is inhomogeneous, and separate components are identified, the intensity of which depends in a non-trivial way on the thickness of the film. Qualitative explanations of the detected effects are proposed. Keywords: carbine, linear allotropy of carbon, localization on clusters.

None Compan M. E.

None Konkov O. I.

None Nikitin S. E.

None Malyshkin V. G.

Features of Raman light scattering spectra in the 2100 cm-=SUP=--1-=/SUP=- line region by carbon formations in thin gradient gold films

薄梯度金膜中碳形成物在2100 cm-1线区域的拉曼光散射光谱特征

Within the framework of the full-potential method of augmented plane waves with local orbitals, the electronic structure and X-ray spectral characteristics of the semiconductor and metal phases of iron disilicide were calculated. The total and partial densities of electronic states, the band structure, and X-ray absorption spectra of the iron K-edge were calculated. The results are compared with the known experimental data. An explanation is given of the change in the X-ray absorption near edge structure during the transition from the semiconductor phase to the metallic one. Keywords: iron disilicide, electronic structure, APW+lo, method, XANES, K-edge.

None Potudanskii G.P.

None Kurganskii S.I.

Electronic structure and X-ray spectral characteristics of the semiconductor and metal phases of iron disilicide

二硅化铁半导体相和金属相的电子结构及X射线光谱特性

Publication Information	Publisher: Nauka Publishers，Publishing cycle: ，Journal Type: journal，Open Access Journals: No
Basic data	Year of publication: 1998，Proportion of original research papers: ，Self Citation Rate:， Gold OA Rate:

Fizika Tverdogo Tela

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Characteristics of Nanocomplexes with iron Fe-=SUP=-3+-=/SUP=- in Glass Ionomer Cement Powder by ESR method

Antiferrodisorsion transition and dielectric relaxation in SrTiO-=SUB=-3-=/SUB=--SrMg-=SUB=-1/3-=/SUB=-Nb-=SUB=-2/3-=/SUB=-O-=SUB=-3-=/SUB=-

Evolution of phase transitions and energy storage effect in SrTiO_3-PbZrO-=SUB=-3-=/SUB=- solid solutions

Features of Raman light scattering spectra in the 2100 cm-=SUP=--1-=/SUP=- line region by carbon formations in thin gradient gold films

Electronic structure and X-ray spectral characteristics of the semiconductor and metal phases of iron disilicide

Characteristics of Nanocomplexes with iron Fe-=SUP=-3+-=/SUP=- in Glass Ionomer Cement Powder by ESR method

Antiferrodisorsion transition and dielectric relaxation in SrTiO-=SUB=-3-=/SUB=--SrMg-=SUB=-1/3-=/SUB=-Nb-=SUB=-2/3-=/SUB=-O-=SUB=-3-=/SUB=-

Evolution of phase transitions and energy storage effect in SrTiO_3-PbZrO-=SUB=-3-=/SUB=- solid solutions

Features of Raman light scattering spectra in the 2100 cm-=SUP=--1-=/SUP=- line region by carbon formations in thin gradient gold films

Electronic structure and X-ray spectral characteristics of the semiconductor and metal phases of iron disilicide