X-ray diffraction

The samples we examined under X-ray diffraction using D5005-Bruker X-ray diffractometer and Cu-Kα radiation. RESULTS AND DISCUSSION The X-ray diffraction analysis of (La1-xYx)FeO3 indicates that all samples possess an orthorhombic structure. The lattice parameters (a, b, c), tolerance factor (t), and RA, RB radii of A and B of the samles (La1-xYx)FeO3 as function of Y content are listed in the table 1. 0.645 0.25. La0.75Y0.25FeO3. 0.645 0.45. La0.55Y0.45FeO3.

Optical transition of Eu3+ in Mg(Al1-x Eux)2O4

The X-ray diffraction (XRD) pattern measurements in the diffraction angle range of examined on samples of Mg(Al 1-x Eu x ) 2 O 4 containing different concentration of Eu 3+ ions are shown in Fig. It is found that XRD patterns of Mg(Al 1-x Eu x ) 2 O 4 strongly depend on concentrations of Eu 3+. 9 (a), in the sample with low content (x = 0.01), only strong sharp diffraction peaks corresponding to the structural phase of spinel MgAl 2 O 4 were observed.

Synthesis and gas-sensing properties of TiO2 Nanowires

.3.1.3 Morphological analysis of TiO2 nanopowder using hydro thermal…….733.2 X-ray diffraction analysis. 3.2.1 X-ray diffraction analysis of TiO2 nanowires. 3.2.2 X-ray diffraction analysis of TiO2 nanopowder. 3.3 Gas sensing properties analysis. 3.3.1 Gas sensing properties analysis of TiO2 nanowires Error! Bookmark not defined. 3.3.2 Gas sensing properties analysis of TiO2 nanopowder. 82 3.3.3 Gas sensing property comparison.

Tổng hợp vật liệu huỳnh quang ba màu sử dụng trong các đèn huỳnh quang compact

104982-TT-EN.pdf

Crystalline structure of the powder is investigated by X-ray diffraction (XRD) technique. Morphology and particle size of the phosphors are observed by scanning electron microscope (SEM) and transmission electron microscope (TEM)

Thực nghiệm chế tạo hệ perovskite kép Ca3 Mn2O7 pha tạp Fe (x = 0.025 – 0.15) và nghiên cứu tính chất điện từ của chúng

Stephens Crystal and magnetic structure of the Ca 3 Mn 2 O 7 Ruddlesden–Popper phase: neutron and synchrotron x-ray diffraction study", J. Martin Ca 3 Mn 2 O 7 ", Acta Cryst.C58, i3-i5.. Whangbo First principles study of the electronic and magnetic structures of the tetragonal and orthorhombic phases of Ca 3 Mn 2 O 7 ", Phys. Whangbo (2007), “First principles study of the electronic and magnetic structures of the tetragonal and orthorhombic phases of Ca 3 Mn 2 O 7.

Nghiên cứu tổng hợp canxi gluconat bằng quá trình oxy hóa chọn lọc glucozơ sử dụng xác tác Pt và Ag / MCM-41

MỤC LỤC .doc

Phương pháp nhiễu xạ tia X (Powder X-ray Diffraction - XRD). Phương pháp hiển vi điện tử quét (SEM).. Phương pháp hiển vi điện tử truyền qua (TEM).. Phương pháp đẳng nhiệt hấp phụ – giải hấp phụ N2 (BET . Phương pháp phổ hấp thụ nguyên tử (AAS). Tổng hợp muối canxi gluconat bằng quá trình oxi hóa glucozơ trên xúc tác Pt/MCM-41 và Ag/MCM-41.. Phân tích sản phẩm muối bằng phương pháp phổ cộng hưởng từ hạt nhân (NMR): 1H-NMR và 13C-NMR. Phân tích sản phẩm canxi gluconat bằng phổ khối lượng (MS).

Effects of Zn content on the magnetic and magnetocaloric properties of Ni-Zn ferrites

The polycrystalline ferrite samples Ni 1-x Zn x Fe 2 O 4 (x = 0.60. X-ray diffraction patterns of ferrite samples Ni 1-x Zn x Fe 2 O 4. The SEM study showed that the microstructure of samples is of high homogeneity and average particle size increases with Zn content in samples, namely from 2.1 µm (x = 0.60) to 2.8 µm (x = 0.65) to 2.9 µm (x = 0.70) and to 3.1 µm (x = 0.75).

Growth of CdS thin films by chemical bath deposition technique

The X-ray diffraction (XRD) patterns of the as-deposited CdS thin film were recorded in a D5005 Brucker X-ray diffractometer with CuK α radiation λ = 1.54056°A, operated at 40 kV and 40 mA. The scanning speed was 0.030 °/s in the 2 θ range from 5° to 65°. The scanning electron microscopy (SEM) images of the obtained CdS thin films were taken on a JEOL5410.

High-temperature thermoelectric properties of Ca1 xPrxMnO3 d ð0pxo1Þ

The quality of the prepared samples was checked by X-ray powder diffractometry. The powder XRD patterns show a single phase of the Ca 1x Pr x MnO 3d solid solution over the whole Pr-doping concentration. x = 0.20 x = 0.15. x = 0.10 x = 0.05. X-ray diffraction patterns for Ca 1x Pr x MnO 2:98. 2 shows the temperature dependence of the electrical resistivity, r, of the prepared samples in the temperature range from room temperature to 1273 K.

Influences of Ru-doping on the Magnetic Properties of Ca0.85 Pr0.15 Mn1−x RuxO3

Three polycrystalline samples of Ca 0.85 Pr 0.15 Mn 1−x - Ru x O 3 (x and 0.08) were prepared by us- ing conventional solid-state reaction. RESULTS AND DISCUSSION Figure 1 shows X-ray diffraction (XRD) patterns for Ca 0.85 Pr 0.15 Mn 1−x Ru x O 3 (x and 0.08) pre- pared by using the solid-state reaction method. The lattice constants determined for Ca 0.85 - Pr 0.15 MnO 3 (i.e., x = 0) are a = 5.311 ˚ A, b = 5.321 ˚ A, and c = 7.540 ˚ A.

Sự tổng hợp và đặc điểm cấu tạo phân tử của N-Metyl và NH-pehyđrotriazinoaza-14-crao-4 ete

3.pdf

Phân tích nhiễu xạ tia X đơn tinh thể hợp chất (4). Cấu tạo phân tử của hợp chất (4) được xác định bằng phương pháp phân tích nhiễu xạ tia X đơn tinh thể (single X-ray diffraction). Đơn tinh thể (4) được tạo thành trong dung môi clorofom. Thông số mạng lưới tinh thể và cường độ tia phản xạ được đo trên thiết bị Bruker APEX2 (2005) tại 100K.

Sự tổng hợp và đặc điểm cấu tạo phân tử của N-Metyl và NH-pehyđrotriazinoaza-14-crao-4 ete

Vol 31 No1.pdf

The existence of giant magnetocaloric effect and laminar structure in Fe73.5 xCrxSi13.5B9Nb3Cu1

DSC curves of as-cast and annealed sample (x ¼ 1) for estimating crystallization volume fraction.. X-ray diffraction patterns of annealed ribbons Fe 73.5x Cr x-. Si 13.5 B 9 Nb 3 Cu 1 (T a ¼ 540 1 C–30 min).. 6 shows the M(T) curves of as-cast ribbons x ¼ 1 and 5. One can see that magnetization is fastly reduced at T C of amorphous phase, after that materials are in superparamagnetic state, then magnetization starts to develop corresponding to the crystallization of a-Fe(Si) phase.

Synthesis of one dimensional SnO2 nanostructure via hydrothermal method for gas sensor application

000000254168.pdf

Influence of hydrothermal temperature. 56 Synthesis of one-dimensional SnO2 nanostructure via hydrothermal method for gas sensor application III Vu Xuan Hien Master thesis LIST OF ABBREVIATIONS  IUPAC: International Union of Pure and Applied Chemistry  XRD: X-ray Diffraction  SEM: Scanning electron microscope  FE-SEM: Field Emission Scanning Electron Microscopy  EDX or EDS: Energy-dispersive X-ray spectroscopy  TEM: Transmission electron microscopy  AFM: Atomic force microscopy  TCOs: Transparent

Nghiên cứu tổng hợp, tính chất vật liệu cấu trúc lõi vỏ CeO2/Ppy =

312704.pdf

The XRD pattern of CeO2 nanorods shows the good crystalline nature of the prepared material. 3.5 (b) indicates X-ray diffraction pattern of the pure PPy, which is amorphous in nature because no peaks can be defined in the XRD pattern of pure PPy. The X-ray diffraction pattern of core-shell nanostructured CeO2@Ppy is shown in Fig.

Nghiên cứu tổng hợp, biến tính vật liệu mao quản trung bình SBA-15 làm xúc tác cho quá trình cracking phân đoạn dầu nặng

277069.pdf

Photoelectron Spectroscopy XRD X-ray Diffraction ZSM-5 Zeolit ZSM-5 có mã cấu trúc quốc tế là MFI ix DANH MỤC BẢNG BIỂU Bảng 1.1.

Nghiên cứu chế tạo và tính chất của NANOCOMPOSITE nền ai gia cường bằng ống NANO CACBON theo phương pháp luyện kim bột

000000272346.pdf

Themorphologies, structures and mechanical properties of the Al/CNTs nanocomposite were alsoinvestigated in detail by scanning electron microscopy (SEM), energy dispersive x-ray (EDX)spectroscopy, x-ray diffraction (XRD) and mechanical measurement methods.

Preparation and characterization of nanocomposite TiO2/SnO2 films

After deposition, the obtained films were subjected to X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses to identify the structure, and the morphology of the samples.. The sharp peaks of the XRD pattern indicate that TiO 2 with high crystallinity and high phase purity was formed from the TiCl 4 solution by using thermal hydrolysis.

Quá trình biến đổi Illit - Smectit: Lấy ví dụ sét Kinnekulle - Thụy Điển và sét Di Linh - Việt Nam