Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material, such as Y-phase hexagonal ferrite material, and methods of manufacturing. In some embodiments, sodium or potassium can be added into the crystal structure of the hexagonal ferrite material in order to achieve improved resonant frequencies in the range of 500 MHz to 1 GHz useful for radiofrequency applications.

A ceramic powder material which contains an LLZ-based garnet-type compound represented by Li.sub.7−3xAl.sub.xLa.sub.3Zr.sub.2O.sub.12 (where x satisfies 0≤x≤0.3) and in which a main phase of a crystal phase undergoes phase transition from a tetragonal phase to a cubic phase in the process of raising a temperature from 25° C. to 1050° C. and the main phase is the cubic phase even after the temperature is lowered to 25° C.

The present invention relates to a ferrite particle, containing a crystal phase component containing a perovskite crystal represented by the compositional formula:

RZrO.sub.3 (provided that R represents an alkaline earth metal element), and having an apparent density in a range represented by the following formula:

1.90≤Y≤2.45

provided that Y in the formula is the apparent density (g/cm.sup.3) of the ferrite particle.

A ferrite sintered magnet has a ferrite phase having a magnetoplumbite-type crystal structure, and contains at least a metal element A, a metal element R, Fe, Co, Zn, and B. The element A is at least one kind of element selected from the group consisting of Sr, Ba, Ca, and Pb, and essentially includes Ca. The element R is at least one kind of element selected from the group consisting of Bi and rare-earth elements including Y, and essentially includes La. Atomic ratios of the metal elements satisfy the following expressions.

A.sub.1-rR.sub.rFe.sub.xCo.sub.yZn.sub.z  (1)

0.40≤r≤0.70  (2)

8.20≤x≤9.34  (3)

0.05<y≤0.50  (4)

0<z≤0.20  (5)

The content of Si is 0 to 0.60% by mass in terms of SiO.sub.2, and the content of B is 0.01 to 0.70% by mass in terms of B.sub.2O.sub.3.

The invention relates to a scintillation material of rare earth orthosilicate doped with a strong electron-affinitive element and its preparation method and application thereof. The chemical formula of the scintillation material of rare earth orthosilicate doped with the strong electron-affinitive element is: RE.sub.2(1−x−y+δ/2)Ce.sub.2xM.sub.(2y−δ)Si.sub.(1−δ)M.sub.δO.sub.5. In the formula, RE is rare earth ions and M is strong electron-affinitive doping elements; the value of x is 0<x≤0.05, the value of y is 0<y≤0.015, and the value of δ is 0≤δ≤10−4; and M is selected from at least one of tungsten, lead, molybdenum, tellurium, antimony, bismuth, mercury, silver, nickel, indium, thallium, niobium, titanium, tantalum, tin, cadmium, technetium, zirconium, rhenium, and gallium Ga.

A porous material includes aggregate particles and a binding material. In the aggregate particles, oxide films containing cristobalite are provided on surfaces of particle bodies that are silicon carbide particles or silicon nitride particles. The binding material binds the aggregate particles together in a state where pores are provided therein. The porous material contains at least one of copper, calcium, and nickel as an ancillary component.

A sandwich-structured dielectric material for pulse energy storage is provided as well as a preparation method thereof. Employing a sandwich structure and combining the properties of ceramic-glass materials prepares a high performance dielectric material for pulse energy storage, in which the ceramic dielectric is core-shell structured powder of Ba.sub.xSr.sub.1-xTiO.sub.3 coated with SiO.sub.2, and the glass material is alkali-free glass AF45, of which the chemical composition is 63% SiO.sub.2-12% BaO-16% B.sub.2O.sub.3-9% Al.sub.2O.sub.3. AF45 alkali-free glass paste is spin-coated on both sides of the ceramic and calcined to get a layer-structured material of glass-ceramic-glass.

A system and method of continuous fabrication of multi-material graded structures using additive manufacturing is disclosed. Using multi-material feedstocks and optimized processing parameters, the gradient on composition and structure are controlled to achieve smooth transition from one functional component to another functional component. A multi-material graded structure is produced as the feedstocks are transported from the feedstock reservoir system comprised of many different materials. Interface transition from one functional layer to the next is gradient, controlled by feedstock mixture ratios based on the flow rate control for the feedstock system. Composition includes chemical composition, physical composition, and porosity. Continuous automatic additive manufacturing method makes the fabrication more efficient and avoids joining problems. This method finds application in fabrication of a fuel cell, battery, reformer and other chemical reaction and process units, including structures made of multiple units, such as stacks, that incorporate multiple functional components.

A dielectric ceramic composition and a multilayer ceramic electronic component are provided, the dielectric ceramic composition includes a barium titanate base material main component and a subcomponent, a microstructure after sintering includes a first crystal grain including 3 or less domain boundaries and a second crystal grain including 4 or more domain boundaries, and an area ratio of the second crystal grain to the total crystal grains is 20% or less.

A scintillator for positron emission tomography is provided. The scintillator includes a garnet compound of a formula of A.sub.3B.sub.2C.sub.3O.sub.12 and an activator ion consisting of cerium. A.sub.3 is A.sub.2X. X consists of at least one lanthanide element. A.sub.2 is selected from the group consisting of (i), (ii), (iii), and any combination thereof, wherein (i) consists of at least one lanthanide element, (ii) consists of at least one group I element selected from the group consisting of Na and K, and (iii) consists of at least one group II element selected from the group consisting of Ca, Sr, and Ba. B.sub.2 consists of Sn, Ti, Hf, Zr, and any combination thereof. C.sub.3 consists of Al, Ga, Li, and any combination thereof. The garnet compound is doped with the activator ion.