A method of manufacturing a cathode active material for a lithium secondary battery according to embodiments of the present invention includes performing a first heat treatment on a first mixture of a transition metal precursor and a lithium precursor at a first calcination temperature to obtain a preliminary lithium-transition metal composite oxide particle; and performing a second heat treatment on a second mixture obtained by adding the lithium precursor to the preliminary lithium-transition metal composite oxide particle at a second calcination temperature which is lower than the first calcination temperature to form a lithium-transition metal composite oxide particle.

Provided are group-III nitride nanoparticles that prevent the piezoelectric field caused by strains on the nanoparticles, achieving good luminous efficiency. The group-III nitride nanoparticle represented by Al.sub.xGa.sub.yIn.sub.zN (0≤x, y, z≤1) incorporating two crystal structures; a wurtzite structure and a zincblende structure, in a single particle. As another example, the group-III nitride nanoparticle has a core-shell structure with a core and a shell, in which the particle constituting the core contains two crystal structures; the wurtzite structure and the zincblende structure, in the particle. Nanoparticles containing the two crystal structures can be produced by using a phosphorus-containing solvent as a reaction solvent, and the mixture ratio of the two crystal structures, (wurtzite structure)/(zincblende structure), is 20/80 or higher.

The present disclosure is directed to novel germanosilicate compositions and methods of producing the same. In particular, this disclosure describes new silica-rich compositions of the germanosilicate designated CIT-13, with and without added metal oxides. The disclosure also describes methods of preparing and using these new germanosilicate compositions as well as the compositions themselves.

The present disclosure is directed to novel germanosilicate compositions and methods of producing and using the same. Included among the new materials are the new germanosilicates of CIT-5 topology having Si:Ge ratios either in a range of from 3.8 to 5.4 or from 30 to 200, with and without added metal oxides. The disclosure also describes methods of preparing and using these new germanosilicate compositions as well as the compositions themselves.

The present invention relates to a sulfide phosphor including a parent body containing one or more selected from Ba, Li, and S, and Al and Ga as constituent elements, wherein one or more activators selected from Eu and Ce are employed to the parent body.

Coated iron oxide (10) nanocrystal structures, superparamagnetic 10 nanoparticles, methods for synthesizing coated 10 nanocrystal structures, and methods for synthesizing superparamagnetic 10 nanoparticles are described herein. A coated 10 nanocrystal structure may comprise an iron oxide core, a manganese ferrite shell layer surrounding the core, and a bilayer coating surrounding the shell layer. The bilayer coating may include an inner oleic acid layer surrounding the shell layer and an outer layer surrounding the inner oleic acid layer.

The present invention relates to a carbon nanotube composition including entangled-type carbon nanotubes and bundle-type carbon nanotubes, wherein the carbon nanotube composition has a specific surface area of 190 m.sup.2/g to 240 m.sup.2/g and a ratio of specific surface area to bulk density of 0.1 to 5.29.

The present invention relates to a material of the formula SnTiO.sub.3 having a crystal structure comprised of layers, wherein the layers comprise Sn(II) ions, Ti(IV) ions and edge-sharing O.sub.6-octahedra, the edge-sharing O.sub.6-octahedra form a sub-layer, the Ti(IV) ions are located within ⅔ of the edge-sharing O.sub.6-octahedra, thus forming edge-sharing TiO.sub.6-octahedra, the edge-sharing TiO.sub.6-octahedra form a honeycomb structure within the sub-layer, the honeycomb structure comprising hexagons with Ti(IV)-vacancies within the hexagons, the Sn(II) ions are located above and below the Ti(IV)-vacancies with respect to the sub-layer, the Ti(IV) ions are optionally substituted with M, M is one or more elements selected from Group 4 and Group 14 elements, and the crystal structure satisfies at least one of the following features (i) and (ii): (i) the Sn(II) ions have a tetrahedral coordination sphere involving three O ions of the layer and the electron lone pair of the Sn(II) ions which is situated at an apical position relative to the three O ions of the layer, (ii) the layers are stacked so that each layer is translated relative to each adjacent layer by a stacking vector S1 or a stacking vector S2, the centers of adjacent hexagons form a parallelogram with a side having a length x and side having a length y, the stacking vector S1 is a combined translation along the side having the length x by ⅔ x and along the side having a lengthy by ⅓ y, the stacking vector S2 is a combined translation along the side having the length x by ⅓ x and along the side having a lengthy by ⅔ y, and the crystal structure comprises layers translated relative to adjacent layers by the stacking vector 1 and layers translated relative to adjacent layers by the stacking vector S2. The present invention is further directed to a material of the formula SnTiO.sub.3 having a tetragonal perovskite-type crystal structure, a method for the preparation of SnTiO.sub.3, a device comprising a ferroelectric material and a use of the material of the formula SnTiO.sub.3 in a ferroelectric element.

The present invention relates to a method for producing a magnetic powder, including: preparing a precursor solution containing an iron precursor and a silica precursor; spraying the precursor solution to form iron/silica precursor droplets; drying the iron/silica precursor droplets to produce iron/silica precursor particles; and heat treating the iron/silica precursor particles to produce an iron oxide/silica composite powder in which iron oxide particles are embedded in a silica matrix. The present invention also relates to a magnetic powder produced by the method. The present invention may provide an iron oxide magnetic powder that does not use rare earth elements and a method for producing the same.

A novel synthetic crystalline aluminogermanosilicate molecular sieve material, designated SSZ-116, is provided. SSZ-116 can be synthesized using 3-[(3,5-di-tert-butylphenyl)methyl]-1,2-dimethyl-1H-imidazolium cations as a structure directing agent. SSZ-116 may be used in organic compound conversion reactions and/or sorptive processes.