10 results about "Hexagonal crystals" patented technology

The present invention pertains to lithium-nickel-manganese composite oxide particles are for use in a positive electrode active material for a lithium-ion secondary battery, and the lithium-nickel-manganese composite oxide particles include secondary particles formed by the aggregation of primary particles containing a lithium-nickel-manganese composite oxide having a hexagonal crystal structure with a layered structure. The secondary particles each have a hollow structure including an outer shell portion and a hollow portion formed inside the outer shell portion. The lithium-nickel-manganese composite oxide particles include, as 20% or more of the total number of the secondary particles, through‑hole-containing secondary particles that each have a through‑hole which has an average diameter of 20 nm or more and penetrates the outer shell portion from the outside of the outer shell portion to the hollow portion.

The objective is to provide a heat-shielding composition that includes a dispersion powder that can be converted into an aqueous dispersion using water as a dispersion medium by adding water. [Solution] A nonionic polymer dispersant and A crystal with a hexagonal crystal structure, general formula M x WO y (However, element M includes one or more elements selected from Li, Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Ra, and satisfies 0.1 ≤ x ≤ 1.0 and 2.0 ≤ y < 4.0) Composite tungsten oxide particles containing composite tungsten oxide, A heat-shielding composition comprising polycarbonate resin or acrylic resin.

This invention belongs to the field of magnetic refrigeration technology, specifically relating to the application of a hexagonal crystal material Sr6GdSc(BO3)6 in ultra-low temperature magnetic refrigeration. This hexagonal crystal material Sr6GdSc(BO3)6 does not undergo a phase transition at temperatures above 100 mK and exhibits a large magnetocaloric effect near 1 K. The maximum magnetic entropy changes under magnetic field variations of 0–1 T, 0–2 T, and 0–3 T are 39.36 mJ·cm⁻¹, respectively. ‑3 · K ‑1 Or 9.01 J·kg ‑1 ·K ‑1 53.95 mJ·cm ‑3 ·K ‑1 Or 12.34 J·kg ‑1 ·K ‑1 and 59.49 mJ·cm ‑3 ·K ‑1 Or 13.61 J·kg ‑1 ·K ‑1 The hexagonal crystal material Sr6GdSc(BO3)6 of this invention exhibits significant magnetocaloric effects and superior low-temperature performance, and has great application prospects in the field of ultra-low temperature magnetic refrigeration technology.

The invention relates to a group III-V semiconductor material, which has a metastable hexagonal crystal structure, in the form of a thin film up to 1µm thick. Figure 1.

Method for the production of a Mo—N-based coating structure, including: providing a substrate to be coated and applying a hard material layer on the substrate, wherein the hard material layer includes at least one layer of Mo—N having a hexagonal crystal structure and at least one layer of Mo—N having a cubic crystal structure or a mixed hexagonal / cubic crystal structure, wherein the hard material layer is applied by a low temperature closed field unbalanced reactive magnetron sputtering coating process.

This invention discloses a magnetically conductive plate assembly, a sound-generating device, and an electronic device, relating to the field of acoustic technology. The magnetically conductive plate assembly includes a body and a plating layer disposed on the surface of the body. The plating layer is primarily a polycrystalline material composed of Ni and Co elements. The polycrystalline material has at least one of a face-centered cubic structure and a close-packed hexagonal crystal structure. The average grain size of the plating layer is 0.01~15 μm, and the self-corrosion potential of the plating layer in a 3.5 wt.% NaCl solution is -0.7~-0.1 V. The magnetically conductive plate assembly of this invention aims to solve the technical problem of improving the magnetic permeability of the magnetically conductive plate assembly while ensuring its corrosion resistance.

Infrared absorbing particles include composite tungsten oxide particles, wherein the composite tungsten oxide particles have a hexagonal crystal structure, and wherein the composite tungsten oxide particles are represented by a general formula MxWyOz (where M is one or more elements selected from Cs, Rb, K, Tl, Ba, Ca, Sr, and Fe, W is tungsten, O is oxygen, 0.25≤x / y≤0.39, and 2.70≤z / y≤2.90).

The application discloses a method for measuring close-packed hexagonal lattice constant based on space plane fitting, which comprises the following steps: firstly, obtaining the X-ray diffraction spectrum of a close-packed hexagonal crystal and indexing; secondly, converting the crystal plane spacing formula into a three-dimensional space plane equation through mathematical transformation; thirdly, calculating a plurality of groups of data according to the measured diffraction angle and performing space plane fitting to obtain a space plane equation containing an intercept; fourthly, introducing a goniometer zero drift error correction quantity to perform multiple iteration correction on the measured angle until the absolute value of the intercept of the fitting plane tends to be zero, so that the accurate value is obtained; and finally, calculating the high-precision lattice constant. The application converts the complex parameter fitting problem into an intuitive space plane fitting and intercept correction process, has clear principle and strong operability, and effectively improves the measurement precision of the close-packed hexagonal lattice constant.

To provide an infrared radiation-absorbing material fine particle dispersion liquid and dispersion body which have high transmittance for light in the visible light region and have absorbance in the near-infrared region, and which can be adjusted to a neutral color between blue and bronze. Provided is an infrared radiation-absorbing material fine particle dispersion liquid or dispersion body comprising infrared radiation-absorbing material fine particles and iron oxide (Fe2O3) fine particles in a liquid or solid medium, wherein the infrared radiation-absorbing material fine particles are formed of composite tungsten oxide fine particles which are represented by a general formula MYWOZ (where the element M is an element selected from Cs, Rb, K, Tl, In, and the like, W is tungsten, 0.001≤Y≤1.0, and 2.2≤Z≤3.0), and which have a hexagonal crystal structure, and a mass ratio between the iron oxide fine particles and the composite tungsten oxide fine particles contained in the liquid or solid medium [iron oxide fine particles / composite tungsten oxide fine particles] is 0.01 or more and 0.1 or less.