Chemical State Mapping of p/n-Controlled SrB6 Bulk Specimens by Soft X-ray Emission Electron Microscope

Elemental and chemical state maps of p/n-controlled SrB6 bulk specimens are presented by using a soft X-ray emission spectroscopy electron microscope. Those bulk specimens were obtained by sintering powder specimens, prepared by the molten-salt method with different compositions of initial materials. A Sr-map, a chemical shift map of B K-emission, and the spectra of characteristic regions of those materials were compared. It was observed that a local Sr deficiency caused a local hole-doped region, confirmed by a chemical shift in the B K-emission spectrum. n-type SrB6 was rather homogeneous. On the other hand, the p-type SrB6 bulk specimen was a mixture of two different p-type regions. This mixed nature originated, presumably, from an uneven Sr content of SrB6 particles prepared by the molten-salt method using a Sr-deficient starting material. A separation process of the two types of materials will realize a high-quality homogeneous p-type SrB6 bulk specimens.

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Chemical-state-resolved x-ray standing-wave analysis using chemical shift in photoelectron spectra

Physical Review B ◽

10.1103/physrevb.51.14778 ◽

1995 ◽

Vol 51 (20) ◽

pp. 14778-14781 ◽

Cited By ~ 29

Author(s):

Munehiro Sugiyama ◽

Satoshi Maeyama ◽

Stefan Heun ◽

Masaharu Oshima

Keyword(s):

Chemical Shift ◽

Standing Wave ◽

Chemical State ◽

Photoelectron Spectra ◽

Wave Analysis ◽

X Ray

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Morphology and Magnetic Properties of NiCuZn Ferrite Synthesized by Solid-Molten Salt Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.873.24 ◽

2013 ◽

Vol 873 ◽

pp. 24-29 ◽

Cited By ~ 1

Author(s):

Jing Feng ◽

Tian Di Liu ◽

Yan Chen ◽

Yu Ting Wang ◽

Yue Ming Ren ◽

...

Keyword(s):

Molten Salt ◽

Molten Salt Method ◽

Growing Up ◽

Vibrating Sample Magnetometer ◽

Structure And Properties ◽

X Ray Diffraction ◽

Exchange Effect ◽

X Ray ◽

Cu Content ◽

Nicuzn Ferrite

Cu doped NiCuZn ferrite Ni0.4-xCuxZn0.6Fe2O4(x=0.16~0.28) have been prepared by the solid-molten salt method using NaCl as flux. The structure and properties were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM) and vibrating sample magnetometer (VSM) techniques. It is found that addition of Cu2+results in the particles size growing up because of the tend of crystal structure to be a normal Zn ferrite.TheMsvalues of NCZF are decrease gradually with increasing of Cu content. Curie temperature (Tc) increases with Cu2+content in the range of x<0.20, and then decreasing rapidly. This can be ascribed to that the lower magnetization moment Cu2+ion amount of B-site increasing leads to weaker super-exchange effect.

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Magnetic Properties of Manganese-Titanium Substituted Barium Ferrite Ba(TiMn)xFe12-2xO19(x=0.0, 0.5, 1.0, 1.5, 2.0) Prepared by the Molten Salt Method

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.434-435.240 ◽

2010 ◽

Vol 434-435 ◽

pp. 240-243 ◽

Cited By ~ 2

Author(s):

Hai Feng Li ◽

Rong Zhou Gong ◽

Hao Luo ◽

Jun Zhou ◽

Li Ren Fan ◽

...

Keyword(s):

Hysteresis Loop ◽

Molten Salt ◽

Barium Ferrite ◽

Magnetic Hysteresis ◽

Magnetic Hysteresis Loop ◽

Electromagnetic Properties ◽

Molten Salt Method ◽

Frequency Range ◽

X Ray Diffraction ◽

X Ray

M-type hexaferrites Ba(TiMn)xFe12-2xO19 (x=0 to 2) powders were synthesized by molten salt method. X-ray diffraction, scanning electron microscope and vibrating sample magnetometer were used to analyze the structures and electromagnetic properties. The results showed that, the magnetoplumbite structures for all samples were formed. Magnetic hysteresis loop measurements of the Ba(TiMn)xFe12-2xO19, exhibitted that the saturation magnetization (Ms), the remanent magnetization (Mr) and the coercitivity (Hc) of compounds depended strongly on the chemical composition of materials. The maxium values of Ms (52.68emu/g) and Mr (32.89emu/g) of the compounds were found at x=0.5; however, the values of Hc and the areas of magnetic hysteresis loop of compounds decreased with increasing the value of x. The Ba(TiMn)1.5Fe9O19/paraffin wax composites containing 40vol% of doped barium ferrite exhibitted good absorption performances in the frequency range of 2–14 GHz.

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Cathode Material Li [Li0.2 Mn0.44Ni0.18Co0.18]O2 Synthesized by Molten Salt Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.690-693.981 ◽

2013 ◽

Vol 690-693 ◽

pp. 981-984

Author(s):

Guang Xin Fan ◽

Hui Lian Li ◽

Shu Pu Dai ◽

Chuan Xiang Zhang ◽

Xue Mao Guan ◽

...

Keyword(s):

Molten Salt ◽

Specific Area ◽

Constant Current ◽

Molar Ratio ◽

Molten Salt Method ◽

X Ray Diffraction ◽

X Ray ◽

Molar Ratios ◽

Structures And Properties ◽

Constant Current Charge

In this paper, LiOH·H2O and Li2CO3, which were widely used in industry and (Mn0.533Co0.233Ni0.233) (OH)2prepared by ourselves selected as starting materials, series materials of lithium-rich layered material Li [Li0.2Mn0.44Ni0.18Co0.18]O2were obtained by a molten salt method. Their structures and properties of the materials were investigated by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) and constant current charge/discharge methods. The effects of different LiOH and Li2CO3molar ratios on the Li [Li0.2Mn0.44Ni0.18Co0.18]O2structures and properties were characterized. The results of the experiments indicate that The structures of the material such as crystal structure, the specific area, particle size distribution, tap densities were controlled by adjusting the proportion of the two lithium sources. Forthermore , when the molar ratio of LiOH and Li2CO3was 3:7, the maximum discharge capacity (214.77 mAhg-1) of the cathode was obtained.

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Synthesis and Characterization of Magnesium Aluminate Spinel Porous Ceramics by Novel Molten Salt Method

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.697.399 ◽

2016 ◽

Vol 697 ◽

pp. 399-403 ◽

Cited By ~ 3

Author(s):

Xian Gong Deng ◽

Jun Kai Wang ◽

Hai Jun Zhang ◽

Jiang Hao Liu ◽

Shao Wei Zhang

Keyword(s):

Molten Salt ◽

Porous Ceramics ◽

Magnesium Aluminate ◽

Molten Salt Method ◽

Magnesium Aluminate Spinel ◽

X Ray Diffraction ◽

Liquid Environment ◽

X Ray

Magnesium aluminate spinel (MgAl2O4) porous ceramics were in-situ synthesized by heating the mixture of Al2O3 and MgCO3 with MgCl2 salt at 1400~1600 °C for 3 h, and then characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The morphology of as-prepared MgAl2O4 porous ceramics was dependent on the addition of MgCl2, and it indicated that the MgCl2 molten salt not only acted as a template for pore formation of the porous ceramics, but also provided a liquid environment for the synthesis of MgAl2O4.

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Influence of Zinc-Zirconium Substitution on Magnetic Properties of Ba(ZnZr)xFe12-2xO19 Hexaferrite Prepared by the Molten Salt Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.79-82.2071 ◽

2009 ◽

Vol 79-82 ◽

pp. 2071-2074 ◽

Cited By ~ 2

Author(s):

Hai Feng Li ◽

Rong Zhou Gong ◽

Xian Wang ◽

Li Ren Fan ◽

Gang He ◽

...

Keyword(s):

Magnetic Properties ◽

Molten Salt ◽

Magnetic Hysteresis ◽

Magnetic Hysteresis Loop ◽

Chemical Compositions ◽

Molten Salt Method ◽

Vibrating Sample Magnetometer ◽

Hexagonal Ferrites ◽

X Ray Diffraction ◽

X Ray

M-type hexaferrites Ba(ZnZr)xFe12-2xO19 (x=0, 0.5, 1.0, 1.5) powders, have been synthesized by molten salt method, where x varies from 0 to 1.5 in steps of 0.5. X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) and vibrating sample magnetometer(VSM) were used to analyze the structures and magnetic properties. The results showed that, the magnetoplumbite structures for all samples calcining at 1100°C have been formed. The magnetic hysteresis loop measurements of the hexagonal ferrites powders showed that the saturation magnetization (Ms), the remanent magnetization (Mr), and the coercitivity (Hc) of ferrites depend strongly on the chemical compositions of materials. The data showed that the max Hc was obtained when substitution of x=1.0 (Hc=63.9 Oe), while the best Ms was obtained when substitution of x=0.5 (Ms=54.02 emu/g). Zn and Zr substitutions greatly modified the magnetic properties of BaM hexaferrite.

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Low-Temperature Molten Salt Synthesis of NiWO4 Nanoparticles

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.311-313.545 ◽

2011 ◽

Vol 311-313 ◽

pp. 545-548 ◽

Cited By ~ 2

Author(s):

Yu Jiang Wang ◽

Yong Gang Wang

Keyword(s):

Electron Microscopy ◽

Transmission Electron Microscopy ◽

Particle Size ◽

Molten Salt ◽

Molten Salt Synthesis ◽

Molten Salt Method ◽

X Ray Diffraction ◽

X Ray ◽

Transmission Electron ◽

Pure Phase

NiWO4 nanoparticles were successfully synthesized by a molten salt method at 270°C. The as-prepared powders were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM), and exhibited a pure phase NiWO4 with about 50 nm in particle size and uniform nearly-spherical particle shape.

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p-Type CaFe2O4 semiconductor nanorods controllably synthesized by molten salt method

Journal of Energy Chemistry ◽

10.1016/j.jechem.2016.03.019 ◽

2016 ◽

Vol 25 (3) ◽

pp. 381-386 ◽

Cited By ~ 11

Author(s):

Xin Liu ◽

Junzhe Jiang ◽

Yushuai Jia ◽

Ailing Jin ◽

Xiangshu Chen ◽

...

Keyword(s):

Molten Salt ◽

Molten Salt Method ◽

P Type

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Compositional imaging in the Electron Microscope

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100084314 ◽

1991 ◽

Vol 49 ◽

pp. 2-3

Author(s):

C. E. Lyman

Keyword(s):

Electron Microscopy ◽

Electron Beam ◽

Electron Microscope ◽

Data Collection ◽

Electron Probe ◽

Compositional Data ◽

Fine Scale ◽

Bulk Specimen ◽

Beam Position ◽

X Ray

Imaging of elemental distributions on a fine scale is one of the triumphs of electron microscopy. Compositional imaging frees the operator from the necessity of making decisions about which features contain the elements of interest. Elements in unexpected locations, or in unexpected association with other elements, may be found easily without operator bias as to where to locate the electron probe for compositional data collection. This technique may be applied to bulk or thin specimens using a variety of composition-sensitive signals as shown in Figure 1.Cosslett and Duncumb obtained the first such compositional image in an electron microprobe modified to scan the electron beam and collect a characteristic x-ray signal as a function of beam position. Early images of this type were called x-ray “dot maps” and provided a qualitative indication of the location of elements on a flat polished bulk specimen to a spatial resolution of about 1 μm.

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Synthesis of CdMoO4 Microcrystals by a Molten Salt Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.472-475.2452 ◽

2012 ◽

Vol 472-475 ◽

pp. 2452-2457 ◽

Cited By ~ 1

Author(s):

Xiao Hui Jiang ◽

Jun Feng Ma ◽

Jie Cheng ◽

Jing Rui Fang ◽

Yong Sun

Keyword(s):

Molten Salt ◽

Molten Salt Method ◽

X Ray Diffraction ◽

X Ray ◽

Transmission Electron Microcopy ◽

Transmission Electron ◽

Structure Morphology ◽

Scanning Electron Microcopy ◽

Pure Phase ◽

Scanning Electron

Cadmium molybdate (CdMoO4) nanoparticles, cube-like crystallites and octahedral microparticles have been successfully synthesized by a molten salt method at 270°C. The structure, morphology and luminescent property of the resultant powders were characterized by X-ray diffraction (XRD), transmission electron microcopy (TEM), scanning electron microcopy (SEM), and photoluminescence (PL), respectively. The resultant samples are a pure phase of CdMoO4 and without any impurities. PL spectra results show that the optical properties of CdMoO4 particles are strongly relied on their morphologies.

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