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Suppressing the Memory Effect in Al Doped 3C-SiC Grown Using Chlorinated Chemistry Gerard Colston1,a*, Arne B.
Aluminum (Al) is the most common p-type dopant in silicon carbide (SiC) and plays a crucial role in the formation of complex device structures.
The addition of HCl into the growth of the Al doped multilayer structure is found to slightly reduce the growth rate with increasing HCl flow rate.
The addition of HCl reduces the incorporation of Al for all doping levels within the multilayer structure, dropping the highest doping level by over an order of magnitude at HCl flow of 300 sccm, see Fig. 4.
The use of this technique in Al doped 3C-SiC would also be applicable to the growth of 4H-SiC epilayers and could offer an alternative to ion implantation in SiC based device structures.

Structure and properties of Sol-Gel derived TiO2/SiO2 films by hot water treatment Yong Chu, Aini Hu, Yuan Gao *a, Huitao Liu *b College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, PR China a gaoyyt@163.com, b liuht-ytu@163.com Keywords: TiO2/SiO2 films, Photocatalysis, Sol-gel, Hot water treatment Abstract.
The crystalline phase, structure, morphology and photocatalytic performance of the films have been investigated.
The changes in the structure and composition of the coating films were examined using an FT-IR (Perkin-Elmer 1730 FTIR; Perkin Elmer) and a metallurgical microscope (XJL-03; Nanjing Jiangnan Novel Optics Co., Ltd.).

The morphology and crystal structure of as-synthesized silver nanoparticles were analyzed by transmission electron microscopy （TEM） and X-ray powder diffraction (XRD).
The morphology of nano silver powder obtained through high-speed centrifugal separation can be observed by transmission electron microscopy (TEM) and the crystal structure of silver nanoparticles can be measured by X-ray diffraction (XRD).
Materials Chemistry and Physics 129(2011)1075-1080
Preparation of hydrophobic nano-silver colloid and aqueous nano-silver colloid by phase transfer[J].Materials Chemistry and physics 126 (2011)12-15
Materials chemistry and physics (2004)82-88

RESULT AND DISCUSSION Figure 1 shows a crystal structure of the layered oxyfluoride precursor K2NbO3F.
• Fig. 1 The crystal structure of the layered oxyfluoride precursor K2NbO3F.
The metastable ion-exchanged sample, K0.63Li0.37NbO3, also keeps a pseudo-cubic perovskite structure.
The distribution of the lithium ions in the structure is unknown.
The A-site of perovskite structure is generally favorable to the large cation with high coordination numbers.

Controlled Fabrication of Nanocomposite with Ni Deposition on the Template of SiO2 Particles and its Magnetic Property Yu-bin Fu* 1, a and Xue-rong Zai 2, b 1 Institute of Material Science and Engineering, Ocean University of China, Qingdao 266100 2 College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100 a *email: ffyybb@ouc.edu.cn, b email: fybzxr@sina.com Keywords: Silica powder, controlled fabrication, electroless deposition of Ni, nanocomposite structure, magnetic property Abstract.
Structure characteristics of the composite The composite structure is characterized by TEM, SADP, XRD, FTIR, and EDS etc.
XRD patterns indicate that nano-sized SiO2 is of an amorphous structure, and the metallic Ni on it is of an f.c.c crystal structure.
(a) Net or chain-like structure of nano-sized SiO2 powder.
Its magnetic property can be tuned by the chain-like silica structure.

It is to explore and to discovery the various phenomenon in physics, chemistry and biology and its inherent law of substances at the nanoscale, the nanoscience is especially the law motion of atomic, molecular and electronics in the nanoscale range, to provide a theoretical guidance for researching and development of nanotechnology product.(2)The nanotechnology.
Nano structural unit refers to the characteristic of nanoscale structure material unit.Nanometer material refers to material structure at least one dimension in the nanometer scale in three dimensional space or composed of nano structural unit materials with special properties[4].According to the definition of nanomaterials, nanomaterials can be divided into two types, one kind of material is has the appearance of nanoscale, such as groups of clusters, nanoparticles, nanowires, nanotubes and nano film, etc.; Another kind of material is a nano structure unit as the main structural components of the material, such as solid, nano composite materials, nano mesoporous materials, nano array, etc.
Fig.1 Structure of typical carbon nanomaterials The research status of nanometer materials.For a long time, researchers have been exploring all kinds of new structure and unique properties of nanomaterials.
Three kinds of typical structure of carbon nanotube are refer with: Fig. 1.
In two-dimensional nanomaterials, study of two-dimensional structure unit focuses on nano piece such as graphene, it is a kind of super material.

Morphology and structure of NPs were determined by FT-IR, X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and energy dispersive spectra (EDS).
The assigned structure was further established by CHN analyses, NMR, and FT-IR spectra.
The large specific surface area, high pore volume, low cost, and low toxicity of nano ZnO make it an efficient catalyst in chemistry [1-5].
FT-IR spectra of ZnO-CaO NPs The crystalline structure and average size of nanoparticles of ZnO-CaO were identified with the XRD technique.
Ali, Synthesis of ZnO nanostructures using sol-gel method, Procedia Chemistry, 19 (2016) 211-216.

This scientific field investigates the relationship between the structure of materials at atomic or molecular scales and their macroscopic properties.
It incorporates elements of applied physics and chemistry.
A major breakthrough in the understanding of materials occurred in the late 19th century, when the American scientist Josiah Willard Gibbs demonstrated that the thermodynamic properties related to atomic structure in various phases are related to the physical properties of a material.

Mesoporous silica (MPS) is a porous silica material with various pore structures and sizes.
In this study, mesocellular foam silica (MCF) was synthesized and functionalized by hexamethyldisilazane (HMDS) to study effects of surface chemistry on benzene adsorption capability.
The 3 dimensional interconnected pore structure is believed to superior to the 2 dimensional pore structure as it helps promote the mass diffusion through the complex pore network [4].
Interconnected spherical pore structure is clearly observed.
Su, Hierachically porous materials: synthsis strategies and structure design, Chem.

To improve the stability of implants in the surrounding bone tissues, the materials with porous structures were fabricated.
In order to further reduce the elastic modulus of Ti-39Nb-6Zr alloys, porous structure is introduced to dense titanium alloys, and powder metallurgy (PM) is applied to fabricate porous alloys with open-cell structure and controllable porosity [7].
Sintering was a complicated process, accompanied by many physic-chemistry changes.
(2) Sintering temperature influenced the porous structures of the alloys.
Ashby, Cellular solids: Structure and properties.