Effect of Mn Doping on Magnetic and Dielectric Properties of Bi2Sn2O7

2015 ◽  
Vol 233-234 ◽  
pp. 105-108 ◽  
Author(s):  
Lubov V. Udod ◽  
Sergey S. Aplesnin ◽  
Maxim N. Sitnikov ◽  
Evgenii V. Eremin ◽  
Maxim S. Molokeev
Keyword(s):  
Electrical Resistance ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Phase Synthesis ◽  
Martensitic Phase Transitions ◽  
Polymorphic Modifications ◽  
Temperature Dependences ◽  
Magnetic And Dielectric Properties ◽  
First Time ◽  
Magnetic Dielectric

The Bi2(Sn0.95Mn0.05)2O7 compound existing simultaneously in two polymorphic modifications, namely, orthorhombic and cubic has been synthesized for the first time by solid-phase synthesis. The magnetic, dielectric and electrical properties of the compound have been studied. Anomalies in the temperature dependences of the electrical resistance and magnetic propoties have been found. These features are explained as martensitic phase transitions.

scholarly journals Твердофазные реакции и фазовые превращения в наноразмерной пленочной структуре висмут/селен

2018 ◽  
Vol 52 (8) ◽  
pp. 823
Author(s):  
В.Я. Когай ◽  
Г.М. Михеев
Keyword(s):  
Heat Treatment ◽  
Phase Transformation ◽  
Phase Transformations ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Film Structure ◽  
Phase Synthesis ◽  
Crystallite Sizes ◽  
Solid Phase Reactions ◽  
First Time

AbstractExperimental results of a study concerned with solid-phase reactions and phase transformations in a Bi/Se nanoscale film structure under heat treatment in vacuum are presented. Nanocrystalline Bi2Se3, BiSe, and Bi_4Se_3 films are obtained for the first time by solid-phase synthesis at various ratios between the Bi and Se layer thicknesses. The phase-transformation temperatures at which Se, BiSe, and Bi4Se3 crystalline phases are formed are determined. The average crystallite sizes in the Bi_2Se_3, BiSe, and Bi_4Se_3 films are found to be 21, 23, and 33 nm, respectively.

A Different Approach to the EGFR Inhibitor Gefitinib Involving Solid-Phase Synthesis

Synlett ◽  
2018 ◽  
Vol 29 (10) ◽  
pp. 1346-1350 ◽  
Author(s):  
Luísa Carvalho ◽  
André Sequeira ◽  
Ana Lourenço ◽  
Luísa Ferreira ◽  
Paula Branco ◽  
...  
Keyword(s):  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Solid Support ◽  
Egfr Inhibitor ◽  
Phase Synthesis ◽  
Synthetic Strategy ◽  
Colorimetric Assays ◽  
First Time ◽  
Synthesis Approach

An efficient solid-phase synthesis approach is here reported for the first time to prepare the EGFR inhibitor Gefitinib. The five-step synthetic strategy used FMP resin as the solid support, and FTIR and colorimetric assays were used to track the reaction’s progress. Gefitinib was obtained with an overall yield of 40%.

scholarly journals Formation of Stable Lithium-Containing Ceramics Using Solid-Phase Synthesis Method

Crystals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1177
Author(s):  
Dmitriy I. Shlimas ◽  
Artem L. Kozlovskiy ◽  
Maxim V. Zdorovets
Keyword(s):  
Phase Composition ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Synthesis Method ◽  
X Ray Diffraction ◽  
Phase Synthesis ◽  
Practical Applications ◽  
Wide Range ◽  
Pure Phase ◽  
Temperature Dependences

Today, one of the most promising materials for a wide range of practical applications is lithium-containing ceramics based on Li2TiO3. At the same time, despite the high potential of their practical application, a number of questions remains related to the methods of their preparation, as well as the formation of a stable crystal structure and a pure-phase composition. To solve these issues, this paper proposes a method for obtaining stable Li2TiO3 ceramics, which is based on solid-phase synthesis combined with the high-temperature sintering of ceramics. During the studies carried out using X-ray diffraction methods, temperature dependences of phase transformations of the TiO2/Li2Ti6O13 → Li2TiO3 type were determined, according to which, at temperatures above 800 °C, the formation of a stable Li2TiO3 phase characterized by a high structural ordering degree of 89–91% is observed. The dependence of changes in structural, optical and ferroelectric characteristics on the conditions of synthesis and phase composition of ceramics was also determined.

PREPARATION AND CHARACTERIZATION OF ELECTRIC ZAO NANOPARTICLES

NANO ◽  
2010 ◽  
Vol 05 (04) ◽  
pp. 215-220 ◽  
Author(s):  
HAO-WEI SHI ◽  
HONG-ZHEN XIE ◽  
JIN-KU LIU ◽  
YAN WANG
Keyword(s):  
Seed Germination ◽  
Root Growth ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Synthesis Method ◽  
Strong Inhibition ◽  
Phase Synthesis ◽  
White Good ◽  
First Time

The white good dispersion zinc aluminium oxide (ZAO) nanoparticles were efficiently prepared by solid phase synthesis method. The morphologies, structures, photoelectricity of the ZAO nanoparticles and the thermochemistry behavior of the precursor were analyzed by TEM, XRD, UV-vis and TG, etc. The phytotoxicity properties of the ZAO nanoparticles were researched for the first time. The results show that the ZAO nanoparticles have a strong inhibition of seed germination and root growth. The biological toxicity of ZAO nanoparticle reduces along with the enlargement of nanoparticle size.

scholarly journals Исследование кинетики гибели неравновесных носителей заряда в четверных соединениях меди Cu-=SUB=-2-delta-=/SUB=-NiSnS-=SUB=-4-=/SUB=- (0≤delta≤0.2)

2021 ◽  
Vol 55 (12) ◽  
pp. 1176
Author(s):  
М.В. Гапанович ◽  
Е.В. Рабенок ◽  
Б.И. Голованов ◽  
Д.М. Седловец ◽  
Г.Ф. Новиков
Keyword(s):  
Crystal Lattice ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Time Resolved ◽  
Phase Synthesis ◽  
Recombination Processes ◽  
Bimolecular Recombination ◽  
The Times ◽  
First Time ◽  
Kinetics Of

By solid-phase synthesis from elemental Cu, Ni, Sn, and S samples Cu2 - δNiSnS4 was prepared . The parameters of their crystal lattice have been refined. The lifetimes of photogenerated current carriers in Cu2 - δNiSnS4 were estimated for the first time by the contactless time-resolved microwave photoconductivity method. This times turned out to be τ ≈ 7 ns, which is comparable with the literature data for the times in kesterites CZTS. Herewith, in kinetics of loses of photogenerated cureent carriers is observed predominance of bimolecular recombination processes over capture processes.

Solid Phase Synthesis of Thymopoietin-(32-36) Using Adpoc Amino Acids and its Biological Activity +

1980 ◽  
Vol 35 (11) ◽  
pp. 1476-1478 ◽  
Author(s):  
Georg Rampold ◽  
Elsa Lundanes ◽  
Karl Folkers ◽  
Wolfgang Voelter ◽  
Hubert Kalbacher ◽  
...  
Keyword(s):  
Amino Acids ◽  
Biological Activity ◽  
Antibody Level ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Model System ◽  
Amino Groups ◽  
Phase Synthesis ◽  
First Time ◽  
Low Activity

Abstract An exemplary peptide has been synthesized for the first time by an automated solid-phase instrumentation which utilized the new Adpoc (1 -(1-adamantyl) -1 -methylethoxycarbonyl-) group for protection of the a-amino groups of the amino acids. The pentapeptide, thymo-poietin-(32-36) was synthesized, and shown to be pure by criteria including HPLC. Using a Cytoxan (cyclophosphamide) model system for suppression of a primary, hemolytic, humoral, antibody level, thymopoietin-(32-36) showed low activity, and reversed the suppressing effect of Cytoxan. This biological activity apparently is the result of cummulative effect.

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