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., 4000 Plovdiv, Bulgaria 2 Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad.
The different optimal annealing temperature provokes different element distributions and interface chemistry of the annealed contacts.
Nevertheless, little is known about the dependence of the contact characteristics, especially morphology and interface chemistry, on the composition of layered Al/Ti contacts [7,8].
As can be seen, the different Ti:Al ratio and resulting different annealing temperatures led to remarkable differences in element distribution and interface chemistry of both ohmic contacts.
The XPS depth profiles allow dividing the contact structure into three regions: surface, film and interface.

The crystal structure was determined using X-ray diffraction.
The size reduction was also confirmed by HR-TEM atomic structure shown in Figure 5.
Li, "Hydrated surface structure and its impacts on the stabilization of t-ZrO 2," Journal of Solid State Chemistry, vol. 180, pp. 2790-2797, 2007
Garvie, "Stabilization of the tetragonal structure in zirconia microcrystals," The Journal of Physical Chemistry, vol. 82, pp. 218-224, 1978
Clearfield, "Structural aspects of zirconium chemistry," Reviews of Pure and Applied Chemistry (Australia), vol. 14, 1964

Lin: Chemistry of Materials Vol. 18 (2006), p. 5958-5964
Islam: Chemistry of Materials Vol. 20 (2008) p. 5055-5060
S: Materials Chemistry and Physics Vol. 114 (2009) p. 242-246
Luo: Chemistry of Materials Vol. 17 (2005) p. 1135-1138
Blasse: Journal of Solid State Chemistry Vol. 14 (1975) p. 181-184

Synthesis and Characterization of SiNW-MnO2 Core-Shell Structure Ankur Soam1*, Kaushik Parida2, A.
This structure of MnO2-SiNWs could be useful for various applications.
Zhang, Li L Zhang, MnO2-based nanostructures for high-performance supercapacitor, Journal of Materials Chemistry A 3 (2015) 21380-21423
Bélanger, Charge Storage Mechanism of MnO2 Electrode Used in Aqueous Electrochemical Capacitor, Chemistry of Materials, 16 (2004) 3184-3190
Lu, Nanoflaky MnO2/carbon nanotube nanocomposites as anode materials for lithium-ion batteries, Journal of Materials Chemistry 20 (2010) 6896-6902

Transition metal chemistry, 2009 34 (5) 493-497
Inorganic chemistry, 2007 46 (24) 10032-10034
Advances in the Chemistry of Naphthyridines [J].
Advances in Heterocyclic Chemistry, 2006 91 189-300
Inorganic chemistry, 2012 51 (3) 1769-1777

The results indicate that the products are phase-pure nanocrystals with pyrochlore-type structure.
The crystalline phase structure was determined by Bruker D8 Advance X-ray diffractometer (XRD) using Cu Kα radiation.
Fig.1 XRD pattern of the Nd2Sn2O7 nanocrystals The pyrochlore structure was also identified by Raman spectra.
Howard, Structural and bonding trends in tin pyrochlore oxides, Journal of Solid State Chemistry, 130 (1997) 58-65
Huner, et al, Bonding and structural variation in doped Bi2Sn2O7, Journal of Solid State Chemistry, 131 (1997) 317-325

Study on the Relation Between Electronic Structure and Tc for Cuprate Superconductor Systems Liguo Zhang 1, Ning Chen 1, Benyong Fang 1, Yang Li 2 1 School of Material Science and Engineering�University of Science and Technology Beijing� Beijing, China, 100083 2 School of Applied Science�University of Science and Technology Beijing�Beijing, China, 100083 ustbzlg@163.com or nchen@sina.com Keywords: electronic structure, cuprate high-temperature superconductor Abstract: In this paper, 36 kinds of cuprate superconductors have been calculated by means of quantum chemistry electronic structure calculation method (CASTEP).
Furthermore, this p-s coupling is relative weak so its effect are neglected in traditional electronic structure theory.
Conclusions The electronic structure results of quantum chemistry calculations show that there is a inner p-s coupling band of O 2s and the most adjacent positive ion A' p orbital for all cuprate superconducting systems.
[4] Xie Sishen�Crystal Structure of High Temperature Superconductor.
[4] Xie Sishen�Crystal Structure of High Temperature Superconductor.

Ps and radiolytic hydrogen yields anticorrelate in saturated hydrocarbons when molecular structure changes from a normal to a cyclic form.
Therefore, the yields of o-Ps and radiolytic hydrogen change oppositely if the molecular structure is changed from the normal to the cyclic form.
Pikaev, Modern Radiation Chemistry.
Mogensen, Positron Annihilation in Chemistry, Springer-Verlag Berlin-Heidelberg, 1995 [7] Y.
Journal of Radioanalytical and Nuclear Chemistry, Articles, 210(2) (1996), p. 371 [9] V.I.

The molar ratio of nitrates to urea and the adiabatic flame temperature was calculated according to the propellant chemistry and combustion thermodynamics theory respectively, and the effect of thermal explosion temperature on the properties of powder was investigated.
The results showed that the combustion process completed in very shortly time, and the cauliflower-like powder with porous structure was obtained.
The reactants calculated theoretically based on propellant chemistry theory were mixed sufficiently in an agate mortar, and grinded to form homogeneous paste-like substance.
Based on the principle of propellant chemistry, organic fuel–nitrate combustion produces CO2, H2O, and N2 as the gaseous products, and the energy released by the combustion is maximum when the valencies of total oxidizing and reducing reach unity.
Theoretical adiabatic flame temperature is one of important parameters in combustion synthesis process, which determines whether combustion can maintain itself or not, and determines the phase structure of products.

In this paper, on the basis of the water chemistry characteristics of Lancun karst groundwater, the fuzzy comprehensiVe eValuation method is applied to analyze the water pollution of groundwater of Lancun Spring Area, and classify its pollution leVels.
Total hardness, Cl- content change in groundwater represent the trends of water chemistry dynamic changing, so they are mainly predicted using correlation analysis in this paper.
The lithology and structure of Lancun spring karst strata is Vertically stratification.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, Volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)