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Article
Distributed processing of spatiotemporal ocean data: a survey
Ocean data exhibits interesting yet human critical features affecting all creatures around the world. Studies on Hydrology and Oceanology become the root of many disciplines, including global resource manageme...
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Article
Development of Cu-based ternary nanocrystalline chalcogenides using mechanical alloying and their characterization
Synthesis of Cu3SbS4 nanocrystalline materials by mechanical alloying using elemental powders as the precursors is studied in this work. The elemental powders are mechanically alloyed for 40 h and the crystal str...
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Article
Controllable synthesis of WO3/Co1-δWO4 composite nanopowders for photocatalytic degradation of methylene blue (MB)
Systematical design and controllable synthesis of nanometer heterogeneous structure have attracted much attention in the photocatalytic field. The tungsten oxide/cobalt tungstate (WO3/Co1-δWO4) nanoparticles with...
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Article
Antiferroelectric and magnetic performance in La0.2Sr0.7Fe12O19 system
La-modified M-type strontium hexaferrite integrates antiferroelectrics and ferromagnetism as a novel multiferroic candidate. By substituting 0.3 Sr2+ with 0.2 La3+ in SrFe12O19, antiferroelectric state is switche...
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Article
Structural, electrical, and magnetic properties of mullite-type Bi2Fe4O9 ceramic
In this work, the synthesis results are reported, and the structural, electrical and magnetic properties of orthorhombic (Pbam) structured bulk Bi2Fe4O9 synthesized through the solid-state reaction process have b...
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Article
Multiferroic properties of PbFe12O19–PbTiO3 composite ceramics
The composite multiferroic-ceramics of xPbFe12O19 + (1 − x) PbTiO3 being mixed in varying molar percentage has been successfully synthesized by the solid-state sintering method. The phase of PbFe12O19 (PFO) provi...
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Article
Preparation and optical characterization of PbWO4 nanocrystals from mechanical alloying process
This study presents the fabrication of PbWO4 nanoparticles using PbO and WO3 of designed molar ratio as the starting materials by mechanical alloying in atmospheric conditions. The impact energy of the SPEX ball ...
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Article
Photocatalytic and semiconducting performance of La modified M-type lead hexaferrite
La0.2Pb0.7Fe12O19 (LaPbM), a traditional M-type hexaferrite with permanent magnets, was revealed to be a semiconductor by optical spectroscopy. The direct and indirect band gap energies were determined to be 1.70...
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Article
Visible photocatalytic degradation of methylene blue on magnetic semiconducting La0.2Sr0.7Fe12O19
Methylene blue (MB) is a representative of a class of dyestuffs resistant to biodegradation. This paper presents a novel photocatalytic degradation of MB by La0.2Sr0.7Fe12O19 compound, which is a traditional perm...
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Article
Open AccessFacile Synthesis and Optical Properties of Small Selenium Nanocrystals and Nanorods
Selenium is an important element for human’s health, small size is very helpful for Se nanoparticles to be absorbed by human's body. Here, we present a facile approach to fabrication of small selenium nanopart...
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Article
Physical preparation and optical properties of CuSbS2 nanocrystals by mechanical alloying process
CuSbS2 nanocrystals have been synthesized through mechanical alloying Cu, Sb and S elemental powders for 40 hs. The optical spectrum of as-milled CuSbS2 nano-powders demonstrates a direct gap of 1.35 eV and an in...
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Article
Preparation of ternary Cd1−x Zn x S nanocrystals with tunable ultraviolet absorption by mechanical alloying
Composition-tunable ternary Cd1−x Zn x S nanocrystals are among the most extensively studied alloyed semiconductor nanocrystals. However, they are almost exclusiv...
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Article
Multiferroic and magnetoelectric properties of La0.1Ba0.9Fe12O19 ceramics
La0.1Ba0.9Fe12O19 powders with similar hexagonal crystal structure to BaFe12O19 have been successfully synthesized using polymer precursor method. The powders were suppressed into pellets, which were sintered int...
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Article
Preparation of Uncapped CdSe x Te1−x Nanocrystals with Strong Near-IR Tunable Absorption
Semiconducting nanocrystals with near-infrared (NIR) photosensitivity are appealing materials for application as photodetectors and in medical diagnostics. Herein, we report the preparation of composition-tuna...
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Article
Synthesis, Structures, and Multiferroic Properties of Strontium Hexaferrite Ceramics
Simultaneous occurrence of large ferroelectricity and strong ferromagnetism has been observed in strontium hexaferrite (SrFe12O19) ceramics. Strontium hexaferrite powders with hexagonal crystal structures have be...
