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Superconductivity of Layered Perovskite synthesized by soft chemistry Takashi Teranishi1, Sachi Takezawa 2, Kenji Toda 1, Hironori Ishikawa 1, Kenji Sato 1, Kazuyoshi Uematsu 2 and Mineo Sato 2 1Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan 2 Department of Chemistry and Chemical Engineering, Niigata University, Niigata 950-2181, Japan Keywords: Layered Perovskite, Superconductivity, Soft Chemistry, Ion exchange reaction, Intercalation, Niobate ABSTRACT Reduced niobates, MLixCa2Nb3O10 (M = Rb, K and Na) and KNaxCa2Nb3O10 were synthesized by intercalation reaction with n-butyllithium or sodium azide.
INTRODUCTION During the last decades a great interest has been taken in the layered perovskites exhibiting interlayer chemistry such as ion-exchange and intercalation reaction [1-4].
The crystal structure of ion-exchange compound, Na0.1Ca0.45Ca2Nb3O10, changes from the NaCa2Nb3O10 type to KCa2Nb3O10 type structure.
Quite recently, we reported the crystal structure of KCa2Nb3O10 [10].
CONCLUSION We synthesized various intercalation niobates with the layered perivskite structure.

The 97 papers are grouped as follows:
Chapter 1: Chemistry and Physics of Materials, Environmental Materials;
Chapter 2: Structure Materials, Mechanics and Dynamics of Materials;
Chapter 3: Material Science in Biology and Medicine;
Chapter 4: Mathematical Methods in Materials Science Keyword: Chemistry and Physics of Materials, Environmental Materials; Structure Materials, Mechanics and Dynamics of Materials; Material Science in Biology and Medicine; Mathematical Methods in Materials Science

The impact of the etch on the bare wafer surface as a function of temperature and etch chemistry is investigated.
The results show etch chemistry reactions will influence the conversion of micropipes in the epi buffer layer.
The epitaxial layers were grown utilizing a chlorosilane based chemistry, described elsewhere [5].
The wafer etched at 1300 C with Si vapor has a pronounced dendritic structure across the entire surface of the wafer.
Fig. 5 shows microscopy images (DIC and Fig. 3: Epi defect density vs. etch chemistry.

ICPA-13 Summary Talk: Chemistry and Polymers Zs.
Anyhow, my title contains “chemistry and polymers” and the question arises necessarily, is a physicist justified at all to speak about chemistry?
To be on the safe side, I have checked the short definitions for those scientific disciplines in the Encyclopaedia Britannica: Chemistry: the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations that they undergo, and the energy that is released or absorbed during these processes… Physics: the science that deals with the structure of matter and the interactions between the fundamental constituents of the observable universe.
Indeed, contributions presented at ICPA-13 clearly show that “physics” and “chemistry” do not separate so much any more, “traditional” positronium chemistry has decreased much in visibility at ICPA-13 with respect to ICPA-5.
One has to speak about this development not only because it is essential for novel applications in solid state physics and materials science but also because those same improvements open up new frontiers in solid state and surface chemistry, which replaced the older branch of positronium chemistry almost exclusively here (positronium chemistry was almost fully absent, just like medicine).

Chemistry Control In Electron Beam Deposited Titanium Alloys Craig A.
Compensating for this loss is necessary in order to achieve nominal chemistry in the deposited material.
It is important to understand how processing at various deposition rates can impact the resultant chemistry.
Either scenario can be detrimental to chemistry and mechanical properties.
Conclusion Electron beam deposition processing is a promising new method for creating large titanium structures.

Influence of HfO2 control oxide ALD precursor chemistry for nitride memories N.
Two HfO2 precursor chemistries were employed, the tetrakis-(ethylmethylamino)hafnium (TEMAH) and the bis(methylcyclopentadienyl)methoxymethyl-hafnium (HfD-04).
The electrical properties of the stacks were studied using platinum gated capacitor structures.
These characteristics describe the response of the structure during the transition from the erased to the write state.
This transition can be accomplished for both structures with moderate pulse amplitudes (+10 V) and relatively short widths (100 μs-1 ms).

Boric acid owes its lubricious properties to its unique natural structure.
Their structural parameters, thermal chemistry, SCF energy and electronic structure would be presented.
Computational Details The Boric acid structure was optimized with Gaussian Software[4] in the DFT route B3LYP with the basis set of 6-31G** and the freq route was also used on the optimized output to determine the thermal chemistry.
Further light would be thrown when the above said structure is analysed at various temperatures as the temperature variations would definitely have influences on the hence the viscosity.
Rao, Journal of Molecular Structure, 613 (2002) 61–66

A surface TiO2-supported of silica composite material was prepared by surface organometallic chemistry method and the structure was characterized by FTIR, EDAX and XRD.
Furthermore, the anatase phase crystal structure is observed by XRD analysis.
In order to generate a genuine, isolated, single-site structure of TiO2-supported on the surface of silica, surface organometallic chemistry (SOMC) method is thought to be an effective way to achieve the goal.
The results reveal that TiO2/SiO2 composite material is of anatase phase crystal structure.
And the investigation proved that this composite material is of anatase phase crystal structure.

The conference was dedicated to fundamental and applied research regarding structure, crystal chemistry, chemical bonding, as well as with magnetic, thermodynamic, phononic and electronic properties of different classes of intermetallic compounds.
Crystal Chemistry, Structure, Chemical Bonding, Intermetallic Compounds, Hydrides, Borides, Carbides, Silicides, Homologues, Pnictides, Chalcogenides, Oxides, Halides, Physical Properties, Modelling, Calculation

Composition and Interface Chemistry Dependence in Ohmic Contacts to GaN HEMT Structures on the Ti/Al Ratio and Annealing Conditions L.
Lowest resistivity of 4.22x10 -5 Ω.cm 2 has been obtained to the channel of the HEMT structure.
The TLM structures of six contact pads have a length of 100 µm and width of 150 µm, and distances between them varied from 6 to 64 µm.
The contact composition and interface chemistry have been investigated by X-ray photoelectron spectroscopy (XPS).
The contact composition and interface chemistry have been investigated by X-ray photoelectron spectroscopy (XPS).